Chevrolet Nubira 2000 User Manual

daewoo :: Daewoo Nubira CDX Wagon L4-2.0L
DOHC D-TEC MFI (2000)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Description and Operation

Alarm Module: Description and Operation

The remote keyless entry control module/receiver is contained in the floor console. The module/receiver processes signals from the remote transmitterand the intrusion sensors, and it activates the alarm if an intrusion is detected. The control module/receiver also has a self- diagnostic function which willdisplay trouble codes. In order to display trouble codes, a scan tool must be connected to the assembly line diagnostic link (ALDL) connector.

The control module/receiver will not communicate with transmitters from other vehicles because there are over four billion possible electronic passwordcombinations, and passwords are not duplicated. The control module/ receiver has an attached antenna to detect signals from the transmitter.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Description and Operation > Page 7

Alarm Module: Service and Repair
Removal

1. Disconnect the negative battery cable.2. Remove floor console left side forward trim panel. Refer to Interior Trim.3. Disconnect the control module/receiver electrical connector.4. Slide the control module/receiver toward the rear of the vehicle and remove it.

Installation

1. Install the control module/receiver by sliding it onto its bracket.2. Connect the control module/receiver electrical connector.3. Install the floor console left side forward trim panel. Refer to Interior Trim.4. Connect the negative battery cable.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Description and Operation > EBCM

Electronic Brake Control Module: Description and OperationEBCM

ELECTRONIC BRAKE CONTROL MODULE (EBCM)

There is no serviceable or removable EEPROM. The EBCM must be replaced as an assembly.Notice:

The EBCM is attached to the hydraulic unit in the engine compartment. The controlling element of ABS 5.3 is a microprocessor-based EBCM. Inputsto the system include the four wheel speed sensors, the stoplamp switch, the ignition switch, and the unswitched battery voltage. There is an output toa bi-directional serial data link, located in pin K of Data Link Connector () for service diagnostic tools and assembly plant testing.DLC

The EBCM monitors the speed of each wheel. If any wheel begins to approach lockup and the brake switch is closed (brake pedal depressed), theEBCM controls the solenoids to reduce brake pressure to the wheel approaching lockup. Once the wheel regains traction, brake pressure is increaseduntil the wheel again begins to approach lockup. This cycle repeats until either the vehicle comes to a stop, the brake pedal is released, or no wheelsapproach lockup.

Additionally, the EBCM monitors itself, each input (except the serial data link), and each output for proper operation. If it detects any systemmalfunction, the EBCM will store a DTC in nonvolatile memory () (DTCs will not disappear if the battery is disconnected). EEPROM

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Description and Operation > EBCM > Page 13

Electronic Brake Control Module: Description and OperationWiring Harness

WIRING HARNESS

EBCM

The wiring harness is the mechanism by which the electronic brake control module () is electrically connected to power and to ground, to thewheel speed sensors, the fuses, the switches, the indicators, and the serial communications port. The components, considered part of the wiringharness, are the wires that provide electrical interconnection, and connectors (terminals, pins, contacts, or lugs) that provide an electrical/mechanicalinterface from the wire to a system component.

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations

Position Of Connectors And Grounds - W/H Front

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Service and Repair

Blower Motor Relay: Service and Repair
High-Blower Relay

Removal

1. Disconnect the negative battery cable.2. The relay is located in front of the blower motor.3. Slide the relay and the connector up and out of its retaining track.4. Separate the relay from the connector.

Installation

1. Align the high-blower relay contacts with the high blower relay terminal slots.2. Push the relay firmly into the base. The relay must be seated and flush with the edge of the base3. Connect the negative battery cable.

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Service and Repair

Compressor Clutch Relay: Service and Repair
Compressor Clutch Relay

Removal

1. Disconnect the negative battery cable.

- The relay is located in the engine fuse block at the left front corner.

2. Pull the relay straight up and out.

Installation

1. Align the relay terminal contacts with the base receptacle.2. Push the relay into the base until it is seated.3. Connect the negative battery cable.

> Relays and Modules > Relays and Modules - Instrument Panel > Audible Warning Device Control Module > Component Information > Description and Operation

Audible Warning Device Control Module: Description and Operation

The chime module will sound in order to bring attention to one or more of the following conditions:

-

The lights are on and the ignition switch is not in ACC, , or START.ON

- The ignition key is in the ignition switch when the driver's door is open.

-

The seat belt is unbuckled when the ignition switch is in or START.ON

-

The vehicle speed exceeds .120 Kph (75 mph)

Voltage is supplied at all times through the fuse block to power the chime module.

> Relays and Modules > Relays and Modules - Instrument Panel > Audible Warning Device Control Module > Component Information > Description and Operation > Page 29

Audible Warning Device Control Module: Service and Repair
(Left-Hand Drive Shown, Right-Hand Drive Similar)

Removal

1. Disconnect the negative battery cable.2. Remove the knee bolster trim panel beneath the steering column.3. Disconnect the electrical connector.4. Remove the screws and the chime module.

Installation

1. Install the chime module with the screws.

Tighten the chime module screws to .Tighten 4 N.m (35 lb-in)

2. Connect the electrical connector.3. Install the knee bolster trim panel beneath The steering column.4. Connect the negative battery cable.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Technical Service Bulletins > Engine

Control - Crankshaft Variation Learning Procedure

Engine Control Module: Technical Service BulletinsEngine Control - Crankshaft Variation Learning Procedure

Bulletin No.: TSB-008-01
Model(s): All
Date: December 19, 2001
VIN Range: All
Description: TEC Test Procedure
Group: Engine
Reference: Scan 100 Operator Manual
Prod. Dates: All

Whenever an Engine Control Module (ECM), Powertrain Control Module (PCM) or battery is disconnected/replaced, the TEC Test Procedure (referredto as the "Crankshaft Position Variation Learning Procedure" in the Service Manual) must be performed using the Scan 100 Scan Tool. This procedureelectronically aligns the Crankshaft Position (CKP) Sensor to the Camshaft Position (CMP) Sensor to correct for variations in Timing Belt length,camshaft and crankshaft pulleys, etc. Failure to perform the TEC Test procedure can cause poor driveability and a variety of Diagnostic Trouble Codes(DTCs) including P1336 - 58x Crank Tooth Not Learned to be stored in diagnostic memory along with Malfunction Indicator Light (MIL) illumination.

Whenever any component that may affect the relationship between the Camshaft Position (CMP) Sensor and the Crankshaft Position (CKP) Sensor isremoved or replaced, the TEC Test Procedure must be performed. Items that may affect the "learned" alignment include the CMP Sensor, the CKPSensor, the ECM/PCM, the Timing Belt, Cylinder Head, Short Block, Camshaft Pulley(s), Engine Assembly, etc.

A number of seemingly unrelated DTCs and/or driveability concerns have also resulted from vehicles where the TEC Test was not properly completedafter battery disconnect/ replacement or ECM/PCM replacement. Various misfire DTCs, rough idle concerns, intermittent stalling, or reports of MILflashing with no DTCs set are common. If you are diagnosing a vehicle with any of these concerns, please complete the TEC Test and re-check thevehicle before continuing with your diagnosis.

A new Engine Control Module (ECM) or Powertrain Control Module (PCM) is programmed with the latest version of the vehicle program for thespecific model and does not need to be "Programmed" using the Scan 100 Scan Tool. However, it is still necessary to connect the Scan 100 Scan Tool tothe vehicle to complete the installation process. After the ECM/PCM is properly installed and the battery reconnected, please perform the followingprocedure:
TEC Test Procedure:

Note:

Before beginning the TEC Test Procedure, ensure that the engine temperature is above 149 F (65 C).

1. Connect the Scan 100 Scan Tool to the Data-Link Connector (DLC) and press the "Power" button.

2. From the Main Menu, choose "Reprogramming" (selection 6).

Note:

The Scan 100 may indicate that the ABS Fuse (Lanos F-19, Nubira F-15) be removed on 1998-99 Lanos and Nubira models equipped with DelphiABS.

3. Choose "Miscellaneous" (selection 3).

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Technical Service Bulletins > Engine Control - Crankshaft Variation Learning Procedure > Page 36

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

4.

Replacement ECM/PCM Only - Choose "VIN Input" (selection 9). When indicated, enter "password" 0-0-0-0, then press "ESC" to go to the VINInput screen. Scroll left-to-right to choose the character and scroll up-and-down to change each character. Press "ENTER" when the VIN is correctto save the VIN and return to the "Miscellaneous" screen.

5.

Choose TEC Test (selection 8). Start the engine when prompted and press "ENTER" to continue. When prompted, with the shift selector in the"Park" position and holding the brake pedal down firmly with your left foot, depress the throttle fully and allow the engine to reach fuel cut at4,000 rpm. Hold the throttle at this point (approximately 2-3 seconds) until the rpm begins to drop and "TEC Test Normal (Good)" is displayed,then release the throttle.

Note:

The Scan 100 will only allow one (1) TEC Test to be completed per key cycle.

If you have any questions about this procedure or need additional information, please contact the Daewoo Technical Assistance Center toll free at (877)DMA-1234, selection 1.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Diagrams > Diagram Information and

Instructions

Engine Control Module: Diagram Information and Instructions

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Diagrams > Diagram Information and Instructions > Page 39

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Electric Wiring Diagram

Contents of Electric Wiring Diagram (Circuit)

Circuit Identification Symbol

Function Of Power Supply Lines

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Diagrams > Diagram Information and Instructions > Page 40

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Wiring Harness Color Identification

Terminal Number Identification

Wire Color Chart Without Tracers

Wire With Tracers

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Diagrams > Diagram Information and

Instructions > Page 41

Engine Control Module: Electrical Diagrams

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Diagrams > Diagram Information and Instructions > Page 42

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

POWERTRAIN CONTROL MODULE (1 OF 3)

POWERTRAIN CONTROL MODULE (2 Of 3)

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Diagrams > Diagram Information and Instructions > Page 43

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

POWERTRAIN CONTROL MODULE (3 OF 3)

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Diagrams > Page 44

Engine Control Module: Description and Operation

The powertrain control module (PCM)/engine control module (ECM), located inside the passenger kick-panel, is the control center of the fuel injectionsystem. It constantly looks at the information from various sensors and controls the systems that affect the vehicle's performance. The PCM/ECM alsoperforms the diagnostic functions of the system. It can recognize operational problems, alert the driver through the Malfunction Indicator Lamp (MIL),and store diagnostic trouble code(s) which identify problem areas to aid the technician in making repairs.
There are no serviceable parts in the PCM/ECM. The calibrations are stored in the PCM/ECM in the Programmable Read-Only Memory (PROM).

5 or 12 volts

10 megohm

The PCM/ECM supplies either to power the sensors or switches. This is done through resistances in the PCM/ECM which are so high invalue that a test light will not come on when connected to the circuit. In some cases, even an ordinary shop voltmeter will not give an accurate readingbecause its resistance is too low. You must use a digital voltmeter with a input impedance to get accurate voltage readings. The PCM/ ECMcontrols output circuits such as the fuel injectors, the idle air control valve, the A/C clutch relay, etc., by controlling the ground circuit through transistorsor a device called a "quad-driver."

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Testing and Inspection > Multiple PCM/

ECM Information Sensor DTCS Set

Engine Control Module: Testing and InspectionMultiple PCM/ECM Information Sensor DTCS Set

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Testing and Inspection > Multiple PCM/ECM Information Sensor DTCS Set > Page 47

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Circuit Description

The powertrain control module (PCM)/engine control module (ECM) monitors various sensors to determine engine operating conditions. The

5 volts

5 volt

PCM/ECM controls fuel delivery, spark advance, transaxle operation, and emission control device operation based on the sensor inputs.The PCM/ECM provides a sensor ground to all of the sensors. The PCM/ECM applies through a pull-up resistor and monitors the voltage presentbetween the sensor and the resistor to determine the status of the Engine Coolant Temperature (ECT) sensor, the Intake Air Temperature (IAT) sensor,and the Transmission Fluid Temperature (TFT) sensor. The PCM/ECM provides the Exhaust Gas Recirculation (EGR) Pintle Position Sensor, theThrottle Position (TP) sensor, the Manifold Absolute Pressure (MAP) sensor, the Air Conditioning Temperature (A)sensor and the Fuel Tank PressureSensor with a reference and a sensor ground signal. The PCM/ECM monitors the separate feedback signals from these sensors to determine theiroperating status.

Diagnostic Aids

5 volt 5 volt

Be sure to inspect PCM/ECM and engine grounds for being secure and clean.A short to voltage in one of the sensor circuits can cause one or more of the following Diagnostic Trouble Codes (DTCs) to be set: P0108, P0113,P0118, P0123, P1106, P1111, P1115, P1121, P1625.If a sensor input circuit has been shorted to voltage, ensure that the sensor is not damaged. A damaged sensor will continue to indicate a high or lowvoltage after the affected circuit has been repaired. If the sensor has been damaged, replace it.An open in the sensor ground circuit between the PCM/ ECM and the splice will cause one or more of the following DTCs to be set: P0108, P0113,P0118, P0123, P1106, P1111, P1115, P1121.A short to ground in the reference circuit or an open in the reference circuit between the PCM/ ECM and the splice will cause one or moreof the following DTCs to be set: P0107, P0112, P0117, P0122, P1107, P1112, P1114, P1122.
Check for the following conditions:

­Inspect for a poor connection at the PCM/ECM. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperlyformed or damaged terminals, and poor terminal-to-wire connection.

-

ON OFF

Inspect the wiring harness for damage. If the harness appears to be OK, observe an affected sensor's displayed value on the scan tool with theignition and the engine while moving connectors and wiring harnesses related to the affected sensors. A change in the affected sensor'sdisplayed value will indicate the location of the fault.

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table.

1. The Powertrain On-Board Diagnostic (OBD II) System Check prompts the technician to complete some basic checks and store the freeze frame
and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the malfunction occurred. Theinformation is then stored on the scan tool for later reference.

9. A faulty EGR valve can leak a small amount of current from the ignition feed circuit to the reference circuit. If the problem does not exist5 volt

with the EGR valve disconnected, replace the EGR valve.11-19.If a sensor input circuit has been shorted to voltage, ensure that the sensor has not been damaged. A damaged IAT or ECT sensor willcontinue to indicate a high voltage or low temperature after the affected circuit has been repaired. A damaged ACT, TP, MAP, Fuel TankPressure, or EGR Pintle Position sensor will indicate a high or low voltage or may be stuck at a fixed value after the affected circuit has beenrepaired. If the sensor has been damaged, replace it.

21. The replacement PCM/ECM must be reprogrammed. Refer to the latest Techline procedure for PCM/ECM reprogramming.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Testing and Inspection > Multiple PCM/ECM Information Sensor DTCS Set > Page 48

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Testing and Inspection > Multiple PCM/ECM Information Sensor DTCS Set > Page 49

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Steps 1 - 10

Steps 11 - 22

Multiple PCM/ECM Information Sensor DTCs Set

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Testing and Inspection > Multiple PCM/

ECM Information Sensor DTCS Set > Page 50

Engine Control Module: Testing and InspectionPCM/ECM Output Diagnosis
Circuit Description

OFF

The powertrain control module (PCM)/engine control module (ECM) controls most components with electronic switches which complete a groundcircuit when turned on. These switches are arranged in groups of 4 and 7, and are called either a surface mounted quad driver module, which canindependently control up to 4 output terminals or an Output Driver Module (ODM), which can independently control up to 7 outputs. Not all of theoutputs are always used.Drivers are fault protected. It a relay or solenoid is shorted, having very low or zero resistance, or if the control side of the circuit is shorted to voltage, itwould allow too much current flow into the PCM/ECM. The driver senses this and the output is turned or its internal resistance increases to limitcurrent flow and protect the PCM/ECM and driver. The result is high output terminal voltage when it should be low. If the circuit from B+ to thecomponent or the component is open, or the control side of the circuit is shorted to ground, terminal voltage will be low. Either of these conditions isconsidered to be a driver fault:Drivers also have a fault line to indicate the presence of a current fault to the PCM/ECM's central processor. A scan tool displays the status of the driverfault lines as 0=Ok and 1=Fault.

Diagnostic Aids

ON OFF

The scan tool has the ability to command certain components and functions and . If a component or function does not have this capability,operate the vehicle during its normal function criteria to check for an open or shorted circuit.An open or short to ground will appear in the open positions on the scan tool only when it is not commanded by the PCM/ECM or the scan tool, while ashort to voltage will appear in the short positions on the scan tool only while the component is being commanded by the PCM/ ECM or scan tool.

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table.

1. The Powertrain On-Board Diagnostic (OBD II) System Check prompts the technician to complete some basic checks and store the freeze frame
and failure records data on the scan tool if applicable. This creates an electronic copy of the data taken when the malfunction occurred. Theinformation is then stored on the scan tool for later reference.

2. A 1 in any of the positions indicates that an open or short is present in the corresponding circuit for that position.4. An open or short to ground will appear in the open positions on the scan tool only when it is not commanded by the PCM/ECM or scan tool, while
a short to voltage will appear in the short positions on the scan tool only while the component is being commanded by the PCM/ECM or scan tool.

5. Proper operation of any component of function with no 1 in any operation of the positions indicates that system operation is normal at this time.6. A component or function that failed to operate at this point indicates that the fault is not on the PCM/ECM side of the circuitry.7. The 1 going away after disconnecting the component electrical connector indicates that the component or component side wiring is at fault. If the
scan tool indicates a fault after disconnecting the component electrical connector and verifying that no open or short is present in the circuit, thenthe PCM/ECM is faulty.

8. The replacement PCM/ECM must be reprogrammed. Refer to the latest Techline procedure for PCM/ECM reprogramming.

10. If no faults have been found at this point, refer to "Diagnostic Aids" for additional checks and information.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Testing and Inspection > Multiple PCM/ECM Information Sensor DTCS Set > Page 51

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

PCM/ECM Output Diagnosis

PCM/ECM Output Diagnosis

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component Information > Testing and Inspection > Page 52

Engine Control Module: Service and Repair
Removal Procedure

1. Disconnect the negative battery cable.2. Remove the passenger side kick panel. Refer to Interior Trim.3. Disconnect the powertrain control module (PCM)/engine control module (ECM) retaining clip from the PCM/ECM mounting base.4. Remove the retaining clip lower end from the mounting base.

5. Remove the PCM/ECM from the mounting base.6. Disconnect the PCM/ECM connectors from the PCM/ECM.

Installation Procedure

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Engine Control Module > Component

Information > Testing and Inspection > Page 53

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

1. Connect the PCM/ECM connectors to the PCM/ECM.2. Insert and align the PCM/ECM into the mounting base.3. Insert the retaining clip lower end into the mounting base.4. Connect the retaining clip to the mounting base.5. Install the passenger side kick panel. Refer to Interior Trim.6. Connect the negative battery cable.7. Perform a crankshaft position system variation learning procedure. Refer to "DTC P1336".

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Main Relay (Computer/Fuel System) > Component Information > Testing and Inspection

Main Relay (Computer/Fuel System): Testing and Inspection

Circuit Description

ON

When the ignition is turned or to the START position, the ignition 1 relay is energized. The ignition 1 relay then supplies voltage to the engine fuseblock fuse EF16 and the engine fuse block fuse EF17. The electronic ignition (EI) system ignition coil, the fuel pump relay (coil side), the variablegeometry induction system (VGIS) solenoid, and the evaporative (EVAP) emission canister purge solenoid are supplied voltage through the engine fuseblock fuse EF16. The fuel injectors are supplied voltage through the engine fuse block fuse EF17.

Diagnostic Aids

- An intermittent problem may be caused by a poor connection, rubbed through wire insulation, or a broken wire inside the insulation.

­A faulty ignition 1 relay will cause a no start condition. There will be no voltage supplied to the EI system ignition coil, the fuel pump relay (coilside), or the fuel injectors. Without voltage supplied to these components, they will not operate.

Test Description

The number(s) below refer to specific step(s) on the diagnostic table.

1. If the test light is on at both of the fuse terminals, the ignition 1 relay is OK.5. This step, along with Steps 6, 7, and 8, checks for correct voltage and ground to the ignition 1 relay terminals.

14. After confirming correct voltage and ground to the ignition 1 relay terminals, it can be determined that the ignition 1 relay is faulty.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Main Relay (Computer/Fuel System) >

Component Information > Testing and Inspection > Page 57

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Steps 1 - 14

IGNITION 1 RELAY CIRCUIT CHECK

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Fuel Delivery and Air Induction > Fuel Pump Relay > Component Information > Testing and Inspection

Fuel Pump Relay: Testing and Inspection

Circuit Description

ON

When the ignition switch is turned , the powertrain control module (PCM)/engine control module (ECM) will activate the fuel pump relay and runthe in-tank fuel pump. The fuel pump will operate as long as the engine is cranking or running and the PCM/ECM is receiving ignition reference pulses.If there are no reference pulses, the PCM/ECM will shut off the fuel pump within after the ignition switch is turned .2 seconds ON

Diagnostic Aids

An intermittent problem may be caused by a poor connection, rubbed through wire insulation, or a broken wire inside the insulation.

Test Description

The number(s) below refer to step(s) on the diagnostic table.

3. This step checks for the PCM/ECM providing a ground for the operation of the fuel pump relay.7. By confirming that the wiring is OK using Steps 2 through 6, it can be determined that the fuel pump relay is at fault.9. After determining that there is no ground being provided by the PCM/ECM to the fuel pump relay, the fault is either the PCM/ECM or the wiring
between the PCM/ECM and the fuel pump relay.

> Relays and Modules> Relays and Modules - Powertrain Management> Relays and Modules - Fuel Delivery and Air Induction > Fuel Pump Relay > Component

Information > Testing and Inspection > Page 62

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Steps 1 - 9

> Relays and Modules> Relays and Modules - Powertrain Management> Relays and Modules - Fuel Delivery and Air Induction > Fuel Pump Relay > Component

Information > Testing and Inspection > Page 63

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Steps 10 - 13

FUEL PUMP RELAY CIRCUIT CHECK

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Fuel Delivery and Air Induction > Main Relay (Computer/Fuel System) > Component Information > Testing and Inspection

Main Relay (Computer/Fuel System): Testing and Inspection

Circuit Description

ON

When the ignition is turned or to the START position, the ignition 1 relay is energized. The ignition 1 relay then supplies voltage to the engine fuseblock fuse EF16 and the engine fuse block fuse EF17. The electronic ignition (EI) system ignition coil, the fuel pump relay (coil side), the variablegeometry induction system (VGIS) solenoid, and the evaporative (EVAP) emission canister purge solenoid are supplied voltage through the engine fuseblock fuse EF16. The fuel injectors are supplied voltage through the engine fuse block fuse EF17.

Diagnostic Aids

- An intermittent problem may be caused by a poor connection, rubbed through wire insulation, or a broken wire inside the insulation.

­A faulty ignition 1 relay will cause a no start condition. There will be no voltage supplied to the EI system ignition coil, the fuel pump relay (coilside), or the fuel injectors. Without voltage supplied to these components, they will not operate.

Test Description

The number(s) below refer to specific step(s) on the diagnostic table.

1. If the test light is on at both of the fuse terminals, the ignition 1 relay is OK.5. This step, along with Steps 6, 7, and 8, checks for correct voltage and ground to the ignition 1 relay terminals.

14. After confirming correct voltage and ground to the ignition 1 relay terminals, it can be determined that the ignition 1 relay is faulty.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Fuel Delivery and Air Induction > Main Relay (Computer/Fuel System) >

Component Information > Testing and Inspection > Page 67

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

Steps 1 - 14

IGNITION 1 RELAY CIRCUIT CHECK

> Relays and Modules > Relays and Modules - Restraint Systems > Sensing and Diagnostic Module (SDM) <--> [Air Bag Control Module] > Component Information > Locations

SIR Component And Wiring Location View

> Relays and Modules > Relays and Modules - Restraint Systems > Sensing and Diagnostic Module (SDM) <--> [Air Bag Control Module] > Component Information > Locations > Page 72

Sensing and Diagnostic Module (SDM): Description and Operation

CAUTION:

During service procedures, be careful when handling the SDM. Never shake or jar the SDM. Never apply power to the SIR system whenthe SDM is not rigidly attached to the vehicle. All SDM mounting bolts must be fully tightened. The arrow on the SDM must point toward the front ofthe vehicle. Failure to follow these precautions could cause deployment and result in personal injury.
The SDM is located on the floor beneath the floor console assembly. The SDM performs the following functions:

­Monitors the supplemental inflatable restraint (SIR) system electrical components and sets a diagnostic trouble code (DTC) when a malfunction isdetected.

- Records any faults that are discovered.

- Displays SIR diagnostic trouble codes and system status information when connected to a scan tool.

- Illuminates the AIRBAG indicator to alert the driver to any faults.

- Provides a reserve power source to deploy the airbags if an accident has disabled the normal power source.

- Monitors vehicle velocity changes to detect frontal impacts which are severe enough to warrant deployment.

- Causes current to flow through the airbag modules to cause deployment if a frontal impact of sufficient force is detected.

The SDM contains no user-serviceable parts.

> Relays and Modules > Relays and Modules - Restraint Systems > Sensing and Diagnostic Module (SDM) <--> [Air Bag Control Module] > Component Information > Locations > Page 73

Sensing and Diagnostic Module (SDM): Service and Repair

CAUTION:

During service procedures, be very careful when handling the SDM. Never strike or jar the SDM. Never power up the SIR system when theSDM is not rigidly attached to the vehicle. All SDM mounting bolts must be carefully tightened, and the SDM arrow must be pointing toward the frontof the vehicle to ensure proper operation of the SIR system. The SDM could be activated if it is powered while not rigidly attached to the vehicle,resulting in unexpected deployment and possible injury.

- Never use SIR parts from another vehicle. This does not include re-manufactured parts purchased from an authorized source.

- Do not attempt to service the SDM, the clockspring, or the airbag modules. These items must be replaced if they are defective.

- Verify the part number of replacement airbag modules. Some inflator modules look identical but contain different internal components.

Important:

OFF

If the vehicle interior has been exposed to extensive water intrusion such as water leaks, driving through high water, flooding, or othercauses, the sensing and diagnostic module (SDM) and the SDM connector may need to be replaced. With the ignition , inspect the area around theSDM, including the carpet. If any significant soaking or evidence of previous soaking is detected, the water must be removed, the water damage repaired,and the SDM and SDM connector must be replaced. Before attempting any of these repairs, the supplemental inflatable restraint (SIR) system must bedisabled. Refer to Disabling the SIR System.

Removal Procedure

> Relays and Modules > Relays and Modules - Restraint Systems > Sensing and Diagnostic Module (SDM) <--> [Air Bag Control Module] > Component Information >

Locations > Page 74

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

1. Disable the SIR system. Refer to Disabling the SIR System.2. Remove the floor console. Refer to Interior Trim.3. Remove the connector position assurance lock, which is tethered to the SDM connector.

4. Disconnect the SDM electrical connector.5. Remove the SDM mounting bolts.6. Remove the SDM.

Installation Procedure

1. Install the SDM with the arrow pointing toward the front of the vehicle.2. Install the SDM mounting bolts.

Tighten the sensing and diagnostic module mounting bolts to .12 N.m (106 lb.in)

3. Connect the SDM electrical connector.4. Install the connector position assurance lock.5. Install the floor console. Refer to Interior Trim.6. Enable the SIR system. Refer to Enabling the SIR System.

> Relays and Modules > Relays and Modules - Transmission and Drivetrain > Relays and Modules - A/T > Control Module, A/T > Component Information > Description and Operation

Control Module: Description and Operation

POWERTRAIN CONTROL MODULE (PCM)

(PCM)

The Powertrain Control Module is an electronic device which monitors inputs to control various transmission functions including shift qualityand transmission diagnostics. The PCM receives input information from sensors, switches, and components to process for use within its' controlprogram. Based on this input information, the PCM controls various transmission output functions and devices.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Door Sensor/Switch (For Alarm) > Component Information > Description and Operation

Door Sensor/Switch (For Alarm): Description and Operation

The remote keyless entry system features an autolocking control, If the doors are unlocked with the remote transmitter when the control module/receiveris in the armed mode, the doors are automatically re-locked after unless any of the following events occur:30 seconds

- The door is opened.

-

The ignition switch is turned .ON

- The rear deck lid is opened.

- The hood is opened.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Door Sensor/Switch (For Alarm) > Component Information > Description and Operation > Page 85

Door Sensor/Switch (For Alarm): Service and Repair
Removal

1. Disconnect the negative battery cable.2. Remove the front door trim panel.3. Disconnect the door tamper switch electrical connector.4. Remove the front door lock and the integral door tamper switch. Refer to Doors.

Installation

1. Install the front door lock and the integral door tamper switch.

2. Install the door tamper switch electrical connector.3. Install the front door trim panel.4. Connect the negative battery cable.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Hood Sensor/Switch (For Alarm) > Component Information > Service and Repair

Hood Sensor/Switch (For Alarm): Service and Repair
Removal

1. Disconnect the negative battery cable.2. Disconnect the electrical connector from the hood open switch.

3. Remove the mounting screw from the hood open switch.4. Remove the hood open switch.

Installation

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Hood Sensor/Switch (For Alarm) > Component Information > Service and Repair >

Page 89

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

1. Install the hood open switch with the mounting screw.

Tighten the hood open switch mounting screw to .Tighten 4 N.m (35 lb-in)

2. Connect the electrical connector to the hood open switch.3. Connect the negative battery cable.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Radio Switch, Anti-theft > Component Information > Description and Operation

Radio Switch: Description and Operation

The audio security system is activated whenever the audio system circuit is disconnected from the battery. A four-digit security code must be entered inorder for the audio system to be functional once again. The security code is stamped on a card located in the vehicle (usually in the glove box).

Procedure

1. With the ignition switch in the ACC or position, turn the radio . At this time, "CODE" will be shown on the radio display along with chimeON ON

sounds.

2. Enter the four-digit security number using the radio pre-set buttons 1 through 6, or 1 through 8 if equipped.3. After all four digits are entered, the digits will blink three times, and the radio will be functional.

Wrong Code

10 minutes

If the wrong code is entered, "ERR" will briefly appear on the display. After this, "CODE" will appear and the code entering procedure can be performedonce again. If the correct code is not entered within , the radio should be disconnected from the battery to reset the audio system. Afterconnecting the battery, repeat the code entering procedure.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Shock Sensor, Antitheft > Component Information > Description and Operation

Shock Sensor: Description and Operation

The anti-theft function is armed if the transmitter sends the LOCK message to the control module/receiver when the ignition is .OFF

When the hood, the door, or the rear deck lid is opened, the hood open switch, the door open switch, or the trunk open switch will change its input toground. The alarm will be activated if the hood open sensor, the door open sensor, or the trunk open sensor changes its input to ground before either ofthe following conditions occurs:

- An UNLOCK message is received from the transmitter.

- The front door tamper switch or the rear deck lid tamper switch indicates key operation by changing its input to ground.

The alarm also will be activated if the ignition input is changed to battery voltage before either of the following conditions occurs:

- An UNLOCK message is received from the transmitter.

- The front door tamper switch or the rear deck lid tamper switch indicates key operation by changing its input to ground.

The alarm also will be activated if the anti-theft function has been armed and the ultrasonic sensor (optional) detects movement within the vehicle beforeeither the front door tamper switch or the rear deck lid tamper switch indicates key operation.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Trunk/Liftgate Sensor/Switch (For Alarm) > Component Information > Service and Repair

Trunk/Liftgate Sensor/Switch (For Alarm): Service and Repair
Removal

1. Disconnect the negative battery cable.2. Disconnect the rear deck lid tamper switch electrical connector from the tamper switch.3. Remove the rear deck lid tamper switch.

Installation

1. Install the rear deck lid tamper switch.2. Connect the rear deck lid tamper switch electrical connector to the tamper switch.3. Connect the negative battery cable.

> Sensors and Switches > Sensors and Switches - Accessories and Optional Equipment > Ultrasonic Sensor, Antitheft > Component Information > Service and Repair

Ultrasonic Sensor: Service and Repair
Removal

1. Slide the ultrasonic sensor in a downward direction to loosen the upper retaining clip, and simultaneously pull the sensor away from the B-pillar.2. Disconnect the electrical connector.

Installation

1. Attach the electrical connector to the ultrasonic sensor.2. Install the ultrasonic sensor by pushing it into the opening in the B-pillar until the retaining clips lock into place.

> Sensors and Switches > Sensors and Switches - Body and Frame > Hood Switch / Sensor > Hood Sensor/Switch (For Alarm) > Component Information > Service and Repair

Hood Sensor/Switch (For Alarm): Service and Repair
Removal

1. Disconnect the negative battery cable.2. Disconnect the electrical connector from the hood open switch.

3. Remove the mounting screw from the hood open switch.4. Remove the hood open switch.

Installation

> Sensors and Switches > Sensors and Switches - Body and Frame > Hood Switch / Sensor > Hood Sensor/Switch (For Alarm) > Component Information > Service and

Repair > Page 107

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

1. Install the hood open switch with the mounting screw.

Tighten the hood open switch mounting screw to .Tighten 4 N.m (35 lb-in)

2. Connect the electrical connector to the hood open switch.3. Connect the negative battery cable.

> Sensors and Switches > Sensors and Switches - Body and Frame > Sunroof / Moonroof Switch > Component Information > Service and Repair

Sunroof / Moonroof Switch: Service and Repair
Removal

1. Disconnect the negative battery cable.2. Pry off the lamp lens.3. Remove the screws and the lamp/power sunroof control switch.

4. Disconnect the electrical connector.

Installation

> Sensors and Switches > Sensors and Switches - Body and Frame > Sunroof / Moonroof Switch > Component Information > Service and Repair > Page 111

Nubira CDX Wagon L4-2.0L DOHC D-TEC MFI (2000)

1. Connect the electrical connector.

NOTE:

Dissimilar metals in direct contact with each other may corrode rapidly. Make sure to use the correct fasteners to prevent prematurecorrosion.

2. Install the lamp/power sunroof control switch with the screws.3. Install the lamp lens.4. Connect the negative battery cable.