Dodge Magnum 1994 4x2 V8 5.2L Workshop Manual

dodge :: Dodge Truck 1500 4x2 Pickup V8-318

5.2L Magnum (1994)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Light Relay > Component Information > Locations

ABS Light Relay: Locations

Power Distribution Center

Power Distribution Center

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Light Relay > Component Information > Locations > Page 7

Warning Lamp Relay

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Locations

ABS Main Relay: Locations

Power Distribution Center

Power Distribution Center

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Locations > Page 11

Related Images

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > ABS Control Module

Electronic Brake Control Module: LocationsABS Control Module

(RWAL)

The Rear Wheel Anti-Lock control module is located behind the instrument panel, to the right of the steering column, and near the intermittentwiper module.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > ABS Control Module > Page 16

Related Images

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > ABS Control Module Connector

Anti-Lock Brake System Controller

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > ABS Control Module Connector > Page 19

Rear Wheel Anti-Lock Control Module Connector

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > ABS Control Module Connector > Page 20

Electronic Brake Control Module: Diagrams4 Wheel ABS System

Related Images

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > ABS Control Module

Connector > Page 21

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

Related Images

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Description and Operation > With Four Wheel Antilock Brakes

Electronic Brake Control Module: Description and OperationWith Four Wheel Antilock Brakes
PURPOSE

(CAB)

The Controller - Antilock Brake is mounted under the hood, separately from the valve body, and has microprocessor circuits that:-

Monitor the brake switch input to tell whether or not to prepare for possible antilock braking.

- Monitor the wheel speed sensor inputs to determine when a wheel is tending to lock up.

­Operate the integral control unit assembly during antilock braking based on comparing the speed sensors to information programmed inmemory.

- Detect ABS system related problems and take diagnostic action.

OPERATION

The CAB will disable antilock control and set a soft ignition latched trouble code if it detects one of the following conditions with itself:-

(71) RAM Read/Write

- (72) ROM Checksum

- (73) Watchdog

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Description and Operation > With Four Wheel Antilock Brakes > Page 24

Electronic Brake Control Module: Description and OperationWith Rear Wheel Antilock Brakes

Anti-Lock Electronic Control Module

PURPOSE

All phases of anti-lock mode brake operation are monitored and controlled by the Controller Antilock Brake module (CAB).

OPERATION

The module operates independently from other electrical circuits in the vehicle.
CAB input/output circuits include the system hydraulic valve, indicator lamps, and the speed sensor.

Speed sensor inputs are continuously monitored and interpreted by the module. The module determines wheel speed and rate of deceleration fromthese inputs and activates the appropriate solenoid in the hydraulic valve when necessary.

The module performs system diagnostic checks and contains a self test program. -

The program is activated when the ignition switch is turned to the ON position.

- In this mode, the module checks indicator light operation, the system electrical circuits and the pressure limiting valve solenoids.

The brake warning and anti-lock indicator lamps are illuminated for approximately two seconds during the system self test cycle.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Service and Repair > With Four Wheel Antilock System

Electronic Brake Control Module: Service and RepairWith Four Wheel Antilock System

Fig. 25 Main Harness Connector

The ABS module is located in the engine compartment attached to the forward side of the front brake anti-lock valve.NOTE:

1. Disconnect upper harness connector from module.2. Lift connector locking handle to release main harness connector for module. Rotate handle upward to clear connector.3. Lift connector up and out of retaining lugs on module.4. Remove module mounting screws then the module.5. Reverse procedure to install, installing harness main connector as follows:

a. Connecting main harness connector to module.b. Seat connector in module retaining lugs and start connector into module.c. Rotate connector locking handle downward into position to seat and retain connector.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Service and Repair > With Four Wheel Antilock System > Page 27

Electronic Brake Control Module: Service and RepairWith Rear Wheel Antilock System

1. Remove knee bolster; then, using a suitable long-shank screwdriver, remove electronic control module lower mounting screws.2. Remove module upper mounting screw, then lower module and bracket assembly from underside of instrument panel.3. Disconnect electrical harness from module; then, if necessary, separate module from bracket so that a new module may be installed.4. Reverse procedure to install.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations

Blower Motor Relay: Locations

Fig 39 Blower Motor Relay Removal/Installation

The relay is located in the passenger compartment on the stop lamp switch bracket. The stop lamp switch bracket is secured to the inboard side of thepedal support bracket under the driver side of the instrument panel. The relay case includes a molded-in plastic slot that snaps over the blade-type relaymount on the stop lamp switch bracket.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 32

Blower Motor Relay: Description and Operation

Fig 39 Blower Motor Relay Removal/Installation

Blower Motor Relay

OPERATION

The blower motor relay is a International Standards Organization (ISO)-type relay. The relay is a electromechanical device that switches batterycurrent from a fuse in the fuse block module to the blower motor, whenever the ignition switch is in the On position. This arrangement reduces theamount of battery current that must flow through the ignition switch.

The relay is energized when the relay coil is provided a voltage signal by the ignition switch. When the relay is de-energized, the blower motorreceives no battery feed.

The relay is located in the passenger compartment on the stop lamp switch bracket. The stop lamp switch bracket is secured to the inboard side ofthe pedal support bracket under the driver side of the instrument panel. The relay case includes a molded-in plastic slot that snaps over theblade-type relay mount on the stop lamp switch bracket. The relay cannot be repaired and, if faulty or damaged, it must be replaced.

CIRCUIT OPERATION

Circuit C1 from fuse 2 in the Fuse Block supplies voltage to the contact side of the blower motor relay

(PDC)

When the ignition switch is in the RUN position it connects Circuit A2 from fuse 2 in the Power Distribution Center to Circuit A22. CircuitA22 connects to the coil side of the blower motor relay
Circuit C1 connects to Circuit C11 through the blower motor relay contacts and supplies voltage to the blower motor.

Circuit Z3 provides the ground path for the blower motor relay.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 33

Blower Motor Relay: Testing and Inspection

Blower Motor Relay

Fig 39 Blower Motor Relay Removal/Installation

RELAY TEST

Remove the blower motor relay from its wire harness connector as described to perform the following tests:

1. A relay in the de-energized position should have continuity between terminals 87A and 30, and no continuity between terminals 87 and 30. If OK.
go to Step 2. If not OK, replace the faulty relay

75 +/- 5 ohms

2. Resistance between terminals 85 and 86 (electromagnet) should be . If OK, go to Step 3. If not OK, replace the faulty relay.3. Connect a battery to terminals 85 and 86. There should now be continuity between terminals 30 and 87, and no continuity between terminals 87A
and 30. If OK, see the Relay Circuit Test procedure. If not OK, replace the faulty relay.

RELAY CIRCUIT TEST

1. The relay common feed terminal cavity (30) is connected to battery voltage and should be hot at all times. If OK go to Step 2. If not OK, repair the
open circuit to the fuse block module as required.

2. The relay normally closed terminal cavity (87A) is connected to terminal 30 in the de-energized position, but is not used for this application. Go to

Step 3.

3. The relay normally open terminal cavity (87) is connected to the blower motor. When the relay is energized, terminal 87 is connected to terminal

30 and provides full battery current to the blower motor. There should be continuity between this cavity and the blower motor relay output circuitcavity of the blower motor wire harness connector at all times. If OK, go to Step 4. If not OK, repair the open circuit to the blower motor asrequired.

4. The coil battery terminal cavity (86) is connected to the electromagnet in the relay. It is energized when the ignition switch is in the On position.
Check for battery voltage at the cavity for relay terminal 86 with the ignition switch in the On position. If OK, go to Step 5. If not OK, repair theopen circuit to the ignition switch through the Power Distribution Center (PDC) as required.

5. The coil ground terminal cavity (85) is connected to ground. This terminal supplies the ground for the relay electromagnetic coil. There should be
continuity between the cavity for relay terminal 85 and a good ground at all times. If not OK, repair the open circuit as required.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 34

Blower Motor Relay: Service and Repair

Fig 39 Blower Motor Relay Removal/Installation

NOTE:

The blower motor relay and wire harness connector are snap-fit onto a blade-type retainer located on the stop lamp switch mounting bracket.The stop lamp switch mounting bracket is secured with two screws to the inboard side of the brake pedal support bracket, under the driver side of theinstrument panel. To remove the relay:

1. Disconnect and isolate the battery negative cable.2. Reach under the knee blocker on the driver side of the instrument panel between the throttle and brake pedals, and unsnap the relay from the blade
on the stop lamp switch bracket.

3. Lower the relay from under the instrument panel far enough to unplug the relay from the wire harness connector.4. To install the relay, align the terminals with the cavities in the relay wire harness connector and push the relay firmly into place.5. Reverse the remaining removal procedures to complete the installation.6. Test the relay operation.

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Component Locations

Compressor Clutch Relay: Component Locations

Power Distribution Center

Power Distribution Center

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Component Locations > Page 39

Pinout

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 40

Compressor Clutch Relay: Description and Operation

Compressor Clutch Relay

The compressor clutch relay is a International Standards Organization (ISO) micro-relay The terminal designations and functions are the same as aconventional ISO relay However, the micro-relay terminal orientation (footprint) is different, the current capacity is lower and the relay case dimensionsare smaller than on the conventional ISO relay.

The compressor clutch relay is a electromechanical device that switches current to the compressor clutch coil when the Powertrain Control Module(PCM) grounds the coil side of the relay The PCM responds to inputs from the heater-A/C mode control switch, the low pressure cycling clutch switch,and the high pressure cut-off switch.

The compressor clutch relay is located in the Power Distribution Center (PDC) in the engine compartment. Refer to the PDC label for relay identificationand location.

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 41

Compressor Clutch Relay: Testing and Inspection

Compressor Clutch Relay

RELAY TEST

(PDC)

The compressor clutch relay is located in the Power Distribution Center . Refer to the PDC label for relay identification and location. Remove therelay from the PDC to perform the following tests:

1. A relay in the de-energized position should have continuity between terminals 87A and 30, and no continuity between terminals 87 and 30. If OK,
go to Step 2. If not OK, replace the faulty relay.

75 +/-5 ohms

2. Resistance between terminals 85 and 86 (electromagnet) should be . If OK, go to Step 3. If not OK, replace the faulty relay.3. Connect a battery to terminals 85 and 86. There should now be continuity between terminals 30 and 87, and no continuity between terminals 87A
and 30. If OK, SEE the Relay Circuit Test. If not OK, replace the faulty relay.

RELAY CIRCUIT TEST

1. The relay common feed terminal cavity (30) is connected to fused battery feed. There should be battery voltage at the cavity for relay terminal 30
at all times. If OK, go to Step 2. If not OK, repair the open circuit to the PDC fuse as required.

2. The relay normally closed terminal (87A) is not used in this application. Go to Step 3.3. The relay normally open terminal cavity (87) is connected to the compressor clutch coil. There should be continuity between this cavity and the
A/C compressor clutch relay output circuit cavity of the compressor clutch coil wire harness connector. If OK, go to Step 4. If not OK, repair theopen circuit as required.

4. The relay coil battery terminal (86) is connected to the fused ignition switch output (run/start) circuit. There should be battery voltage at the cavity
for relay terminal 86 with the ignition switch in the On position. If OK, go to Step 5. If not OK, repair the open circuit to the fuse block module asrequired.

5. The coil ground terminal cavity (85) is switched to ground through the Powertrain Control Module (PCM). There should be continuity between
this cavity and the A/C compressor clutch relay control circuit cavity of the PCM wire harness connector C (gray) at all times. If not OK, repair theopen circuit as required.

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 42

Compressor Clutch Relay: Service and Repair

Fig 24 Power Distribution Center

(PDC)

1. Disconnect and isolate the battery negative cable.2. Remove the cover from the Power Distribution Center .3. Refer to the label on the PDC for compressor clutch relay identification and location.4. Unplug the compressor clutch relay from the PDC.5. Install the compressor clutch relay by aligning the relay terminals with the cavities in the PDC and pushing the relay firmly into place.6. Install the PDC cover.7. Connect the battery negative cable(s).8. Test the relay operation.

> Relays and Modules > Relays and Modules - Instrument Panel > ABS Light Relay > Component Information > Locations

ABS Light Relay: Locations

Power Distribution Center

Power Distribution Center

> Relays and Modules > Relays and Modules - Instrument Panel > ABS Light Relay > Component Information > Locations > Page 47

Warning Lamp Relay

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and Instructions

Daytime Running Lamp Control Unit: Diagram Information and Instructions

Connector Information

Connector Identification

Connectors shown in the diagrams are identified using the international standard arrows for male and female terminals. A connector identifier is placednext to the arrows to indicate the connector number.

For viewing connector pin-outs, with two or more terminals, refer to Connector Pin-Outs Index, which identifies the connector by number and providesterminal numbering, circuit identification, wire colors, and functions.

All connectors are viewed from the terminal end unless otherwise specified. To find the connector location in the vehicle, refer to Connector LocationsIndex, which uses the connector identification number from the wiring diagrams to provide a figure number reference.

Splice Location Symbol Identification

Wiring Splice Examples

Splice locations are indicated in the diagrams by a diamond with a splice circuit code within it (example 1). If there is more than one splice percircuit a small box will be connected to it with the splice number in it (example 2).

Locations/Splices

To locate a splice in the wiring harness determine the splice number from the diagrams then refer to . This section shows thegeneral location of the splice in the harness.

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and

Instructions > Page 53

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and

Instructions > Page 54

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

Symbol Identification

How to Find System & Component Diagrams

Group Index

When trying to find the diagram for a specific component or system, use the information or the under Alphabetic Index to Wiring Diagrams Electrical

Group Index Diagrams By Sheet Number

Whenever a reference exists to another sheet or figure, find the corresponding diagram using the , , or . The reference number for the subsequent diagram will match a listed group shown.Diagrams By Figure Number

Fusible Link Color Code

Vehicle wiring harnesses are equipped with fusible links to protect against harness damage in the event of a short in the system. Fusible links are colorcoded to indicate wire gauge and size. Refer to the fusible link chart for color and gauge identification.

Wire Gauge Color Code Wire Color

12 Ga BK Black
14 Ga RD Red
16 Ga DB Dark Blue
18 Ga GY Gray
20 Ga OR Orange
22 Ga WT White

Main Circuit ID Codes

Main Circuit Identification

All circuits in the diagrams use an alpha/numeric code to identify the wire and its function. To identify which circuit code applies to a system, refer to theCircuit Identification Code Chart. This chart shows the main circuits only and does not show the secondary codes that may apply to some models.

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and

Instructions > Page 55

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

International Symbol Identification Chart

Wire Color Codes

Black:

BK

Blue:

BL

Brown:

BR

Dark Blue:

DB

Dark Green:

DG

Gray:

GY

Light Blue:

LB

Light Green:

LG

Orange:

OR

Pink:

PK

Red:

RD

Tan:

TN

Violet:

VT

White:

WT

Yellow:

YL

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and Instructions > Page 56

Daytime Running Lamp Control Unit: Diagnostic Aids

When troubleshooting wiring problems there are six steps which can aid in the procedure. The steps are listed and explained below. Always check fornon-factory items added to the vehicle before doing any diagnosis. If the vehicle is equipped with these items, disconnect them to verify these add-onitems are not the cause of the problem.

1. Verify the problem.

2. Verify any related symptoms. Do this by performing operational checks on components that are in the same circuit. Refer to the wiring diagrams.

3. Analyze the symptoms. Use the wiring diagrams to determine what the circuit is doing, where the problem most likely is occurring and where the
diagnosis will continue.

4. Isolate the problem area.

5. Repair the problem.

6. Verify proper operation. For this step check for proper operation of all items on the repaired circuit. Refer to the wiring diagrams.

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and Instructions > Page 57

Daytime Running Lamps Module

> Relays and Modules > Relays and Modules - Lighting and Horns > Daytime Running Lamp Control Unit > Component Information > Diagrams > Diagram Information and Instructions > Page 58

Daytime Running Lamps Module

> Relays and Modules > Relays and Modules - Lighting and Horns > Horn Relay > Component Information > Locations

Horn Relay: Locations

Power Distribution Center

Power Distribution Center

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Locations

Fig.12 Fuse Block And Relay Bank

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions

Relay Box: Diagram Information and Instructions

Connector Information

Connector Identification

Connectors shown in the diagrams are identified using the international standard arrows for male and female terminals. A connector identifier is placednext to the arrows to indicate the connector number.

For viewing connector pin-outs, with two or more terminals, refer to Connector Pin-Outs Index, which identifies the connector by number and providesterminal numbering, circuit identification, wire colors, and functions.

All connectors are viewed from the terminal end unless otherwise specified. To find the connector location in the vehicle, refer to Connector LocationsIndex, which uses the connector identification number from the wiring diagrams to provide a figure number reference.

Splice Location Symbol Identification

Wiring Splice Examples

Splice locations are indicated in the diagrams by a diamond with a splice circuit code within it (example 1). If there is more than one splice percircuit a small box will be connected to it with the splice number in it (example 2).

Locations/Splices

To locate a splice in the wiring harness determine the splice number from the diagrams then refer to . This section shows thegeneral location of the splice in the harness.

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions >

Page 68

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions >

Page 69

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

Symbol Identification

How to Find System & Component Diagrams

Group Index

When trying to find the diagram for a specific component or system, use the information or the under Alphabetic Index to Wiring Diagrams Electrical

Group Index Diagrams By Sheet Number

Whenever a reference exists to another sheet or figure, find the corresponding diagram using the , , or . The reference number for the subsequent diagram will match a listed group shown.Diagrams By Figure Number

Fusible Link Color Code

Vehicle wiring harnesses are equipped with fusible links to protect against harness damage in the event of a short in the system. Fusible links are colorcoded to indicate wire gauge and size. Refer to the fusible link chart for color and gauge identification.

Wire Gauge Color Code Wire Color

12 Ga BK Black
14 Ga RD Red
16 Ga DB Dark Blue
18 Ga GY Gray
20 Ga OR Orange
22 Ga WT White

Main Circuit ID Codes

Main Circuit Identification

All circuits in the diagrams use an alpha/numeric code to identify the wire and its function. To identify which circuit code applies to a system, refer to theCircuit Identification Code Chart. This chart shows the main circuits only and does not show the secondary codes that may apply to some models.

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions >

Page 70

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

International Symbol Identification Chart

Wire Color Codes

Black:

BK

Blue:

BL

Brown:

BR

Dark Blue:

DB

Dark Green:

DG

Gray:

GY

Light Blue:

LB

Light Green:

LG

Orange:

OR

Pink:

PK

Red:

RD

Tan:

TN

Violet:

VT

White:

WT

Yellow:

YL

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions > Page 71

Relay Box: Diagnostic Aids

When troubleshooting wiring problems there are six steps which can aid in the procedure. The steps are listed and explained below. Always check fornon-factory items added to the vehicle before doing any diagnosis. If the vehicle is equipped with these items, disconnect them to verify these add-onitems are not the cause of the problem.

1. Verify the problem.

2. Verify any related symptoms. Do this by performing operational checks on components that are in the same circuit. Refer to the wiring diagrams.

3. Analyze the symptoms. Use the wiring diagrams to determine what the circuit is doing, where the problem most likely is occurring and where the
diagnosis will continue.

4. Isolate the problem area.

5. Repair the problem.

6. Verify proper operation. For this step check for proper operation of all items on the repaired circuit. Refer to the wiring diagrams.

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions > Page 72

Power Distribution Center

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions > Page 73

Relay Box: Mechanical Diagrams

> Relays and Modules > Relays and Modules - Power and Ground Distribution > Relay Box > Component Information > Diagrams > Diagram Information and Instructions >

Page 74

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

Fig.12 Fuse Block And Relay Bank

Power Distribution Center

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

Instructions

Body Control Module: Diagram Information and Instructions

Connector Information

Connector Identification

Connectors shown in the diagrams are identified using the international standard arrows for male and female terminals. A connector identifier is placednext to the arrows to indicate the connector number.

For viewing connector pin-outs, with two or more terminals, refer to Connector Pin-Outs Index, which identifies the connector by number and providesterminal numbering, circuit identification, wire colors, and functions.

All connectors are viewed from the terminal end unless otherwise specified. To find the connector location in the vehicle, refer to Connector LocationsIndex, which uses the connector identification number from the wiring diagrams to provide a figure number reference.

Splice Location Symbol Identification

Wiring Splice Examples

Splice locations are indicated in the diagrams by a diamond with a splice circuit code within it (example 1). If there is more than one splice percircuit a small box will be connected to it with the splice number in it (example 2).

Locations/Splices

To locate a splice in the wiring harness determine the splice number from the diagrams then refer to . This section shows thegeneral location of the splice in the harness.

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

Information > Diagrams > Diagram Information and Instructions > Page 81

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

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

Information > Diagrams > Diagram Information and Instructions > Page 82

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

Symbol Identification

How to Find System & Component Diagrams

Group Index

When trying to find the diagram for a specific component or system, use the information or the under Alphabetic Index to Wiring Diagrams Electrical

Group Index Diagrams By Sheet Number

Whenever a reference exists to another sheet or figure, find the corresponding diagram using the , , or . The reference number for the subsequent diagram will match a listed group shown.Diagrams By Figure Number

Fusible Link Color Code

Vehicle wiring harnesses are equipped with fusible links to protect against harness damage in the event of a short in the system. Fusible links are colorcoded to indicate wire gauge and size. Refer to the fusible link chart for color and gauge identification.

Wire Gauge Color Code Wire Color

12 Ga BK Black
14 Ga RD Red
16 Ga DB Dark Blue
18 Ga GY Gray
20 Ga OR Orange
22 Ga WT White

Main Circuit ID Codes

Main Circuit Identification

All circuits in the diagrams use an alpha/numeric code to identify the wire and its function. To identify which circuit code applies to a system, refer to theCircuit Identification Code Chart. This chart shows the main circuits only and does not show the secondary codes that may apply to some models.

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

Information > Diagrams > Diagram Information and Instructions > Page 83

1500 4x2 Pickup V8-318 5.2L Magnum (1994)

International Symbol Identification Chart

Wire Color Codes

Black:

BK

Blue:

BL

Brown:

BR

Dark Blue:

DB

Dark Green:

DG

Gray:

GY

Light Blue:

LB

Light Green:

LG

Orange:

OR

Pink:

PK

Red:

RD

Tan:

TN

Violet:

VT

White:

WT

Yellow:

YL

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

Instructions > Page 84

Body Control Module: Diagnostic Aids

When troubleshooting wiring problems there are six steps which can aid in the procedure. The steps are listed and explained below. Always check fornon-factory items added to the vehicle before doing any diagnosis. If the vehicle is equipped with these items, disconnect them to verify these add-onitems are not the cause of the problem.

1. Verify the problem.

2. Verify any related symptoms. Do this by performing operational checks on components that are in the same circuit. Refer to the wiring diagrams.

3. Analyze the symptoms. Use the wiring diagrams to determine what the circuit is doing, where the problem most likely is occurring and where the
diagnosis will continue.

4. Isolate the problem area.

5. Repair the problem.

6. Verify proper operation. For this step check for proper operation of all items on the repaired circuit. Refer to the wiring diagrams.

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Powertrain Control Module <--> [Engine Control Module] > Component Information >

Specifications

Powertrain Control Module: Specifications

Crankshaft Position Sensor ............................................................................................................................................................................ 8 Nm (70 in lb)

Distributor Hold Down Bolt ........................................................................................................................................................................ 23 Nm (17 In lb)

Powertrain Control Module Mounting Screws ................................................................................................................................................ 1 Nm (9 in lb)

Powertrain Control Module (PCM) Elect. Connector ................................................................................................................................... 4 Nm (35 in lb)

Spark Plugs .................................................................................................................................................................................................. 41 Nm (30 ft lb)

> Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Powertrain Control Module <--> [Engine Control Module] > Component Information >

Locations > Component Locations

Powertrain Control Module: Component Locations

PCM Location

The Powertrain Control Module is located on the firewall at the right-hand rear corner of the engine compartment.(PCM)

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PCM Location