Dodge Dakota 1997 4WD V6 3.9L Workshop Manual

dodge :: Dodge Truck Dakota 4WD V6-3.9L VIN X
(1997)

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

ABS Main Relay: Locations

Anti-Lock Brake System relays are located in the power distribution box in the engine compartment.(ABS)

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

ABS Main Relay: Description and Operation

(ABS)

(CAB)

The Anti-Lock Brake System has two relays, one for the system and one for the pump motor. The system relay is used for the solenoid valves andController Anti-Lock Brake . The system relay is connected to the CAB at the power control relay terminal. The pump motor relay is used for thepump motor only. The pump motor relay starts/stops the pump motor when signaled by the CAB. The relays are located in the power distribution box inthe engine compartment.

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

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Locations > Page 11

CAB Connectors

> 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

GENERAL INFORMATION

(CAB) (HCU)

(ABS)

The Controller Anti-Lock Brake module is mounted on the top of the Hydraulic Control Unit . It operates the Anti-Lock BrakeSystem and is separate from other vehicle electrical circuits. CAB voltage comes through the ignition switch in the RUN position. TheCAB contains dual microprocessors. A logic block in each microprocessor receives identical sensor signals. These signals are processed andcompared simultaneously.

OPERATION

The module is used to monitor wheel speeds and modulate (control) hydraulic pressure in each brake channel. The modulated hydraulic pressure isused to prevent wheel lockup during braking. Brake switch input is monitored to determine whether or not to prepare for possible anti-lockbraking. Wheel speed sensors are monitored to determine when a wheel is beginning to lock up. The CAB will operate the valves in the HCU tocontrol braking pressure during anti-lock braking.

The CAB also receives input from the 4x4 indicator switch, mounted on the transfer case. This switch is closed to ground when the transfer case isshifted to four wheel drive mode. While in four wheel drive, the front and rear axles will operate together. With this input, the CAB is able tomodify its operation to allow for this. Should a need for anti-lock operation occur while in four wheel drive, the CAB will extend the amount ofallowable dump cycles.

SELF-DIAGNOSTIC FEATURES

(DRB)

The CAB contains a self check program that illuminates the ABS warning light when a system fault is detected. Faults are stored in a diagnosticprogram memory and are accessible with the Diagnostic Readout Box scan tool. ABS faults remain in memory until cleared, or until afterthe vehicle is started approximately 50 times. Stored faults are not erased if the battery is disconnected.

> 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 14

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

GENERAL INFORMATION

(CAB) (ABS)

The Controller Anti-Lock Brake is a microprocessor which monitors and controls the Anti-Lock Brake System operation. It has a14 terminal connector to deliver power and ground and to connect all inputs and outputs associated with the system. The CAB primary functionsare:

^ Detect wheel locking tendencies.
^ Control the application of brake fluid pressure to the rear brakes during ABS braking.
^

Monitor the Rear Wheel Anti-Lock brake system for proper operation.(RWAL)

^ Perform self-check diagnostics.

The CAB continuously monitors the speed of the differential ring gear by monitoring signals generated by the rear wheel speed sensor. The CABdetermines a wheel locking tendency when it recognizes the ring gear decelerating too rapidly.

When a wheel-locking tendency is detected, the CAB energizes the isolation solenoid in the RWAL valve. When the isolation solenoid isenergized, hydraulic pressure cannot be increased to the rear wheel cylinders. If the rear wheel speed sensor still indicate that the ring gear isdecelerating too rapidly, the CAB then energizes the dump solenoid to reduce pressure at the rear wheel cylinders. The CAB continues this actionuntil the wheel-locking tendency no longer exists.

ON-BOARD DIAGNOSTICS

(DTC)

When a fault is detected, the CAB will generate and store diagnostic trouble codes. Only one code can be stored at any one time. If the CABsenses a fault in any one of its monitored circuits, it will illuminate the red brake warning and ABS warning lamps. It will then generate aDiagnostic Trouble Code and store it in memory. In general, the diagnostic trouble code will remain in memory when the ignition key hasbeen turned Off. The exception to this is Diagnostic Trouble Codes 9 and 11, which are erased any time the key has been turned to the Offposition. Also, Diagnostic Trouble Code 11 will be removed from memory when the ignition switch is in the Run or Accessory positions if themalfunction has been eliminated. If the malfunction remains, Diagnostic Trouble Codes 9 and 11 will be reset on the next ignition key cycle to On.

INPUTS

The CAB monitors the following inputs to determine when a wheel locking tendency may exist:

^ Rear Wheel Speed Sensor
^ Brake Lamp Switch
^ Brake Warning Lamp Switch
^ Reset Switch

> 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 15

Dakota 4WD V6-3.9L VIN X (1997)

^ 4WD Switch (If equipped)

OUTPUTS

The CAB controls the following outputs for anti-lock braking and brake warning information:

^ RWAL Valve
^ ABS Warning Lamp
^ Brake Warning Lamp

POWER SUPPLY & GROUND

Ignition voltage is provided to the CAB through connector pin 3 and is protected by a 20 amp fuse. Ignition voltage is supplied when the ignitionswitch is in the Run or Accessory positions. The CAB requires ignition voltage to be able to operate the anti-lock brakes. Battery voltage isprovided to the CAB through pin 9 and is protected by a 20 amp fuse. This circuit supplies power to the memory cells so that the CAB can retaindiagnostic information. Except for Diagnostic Trouble Codes 9 and 11, the CAB stores DTCs in the battery fed volatile memory. Volatilememories only retain information as long as power is supplied to the memory. If a DTC is stored in the battery fed volatile memory, the DTC can

be cleared from the memory by disconnecting the battery supply to the CAB. Diagnostic Trouble Codes 9 and 11 are also in a volatile memory buttheir memories are fed with ignition voltage. A ground is provided to the CAB through pin 12 of the 14-way connector. It is required by the CABto be able to operate any of its circuits.

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

Electronic Brake Control Module: Service and RepairFour Wheel Antilock Brake System

Pump Motor Connector

REMOVAL

(CAB)

(HCU)

1. Disconnect harness connector from the Controller Anti-Lock Brake .2. Remove screws attaching CAB to the Hydraulic Control Unit .3. Lift the CAB up off the HCU and disconnect the pump motor connector.4. Remove the CAB.

INSTALLATION

1. Position controller over the HCU and connect the pump motor harness.

Ensure the CAB seal is in position before installation.NOTE:

2. Place the CAB onto the HCU and install the mounting screws.3. Connect the harness to the CAB.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Service and Repair > Four Wheel Antilock Brake System > Page 18

Electronic Brake Control Module: Service and RepairRear Wheel Antilock Brake System

Trim Panel

RWAL Controller

REMOVAL

INSTALLATION

1. Connect wiring to control module.2. Position module on steering column support.3. Install control module mounting bolts.4. Install the knee blocker, DLC and trim panel.

(DLC)

1. Remove the trim panel, Data Link Connector and knee blocker.2. Remove bolts attaching module to the left side of the steering column support.3. Disconnect wiring and remove module from vehicle.

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

Blower Motor Relay: Locations

Fig 40 Power Distribution Center

The blower motor relay is located in the PDC in the engine compartment.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 23

Blower Motor Relay: Description and Operation

Blower Motor Relay

Fig 40 Power Distribution Center

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 Power Distribution Center (PDC) to the blower motor, whenever the ignition switch is in the On position. Thisarrangement reduces the amount of battery current that must flow through the ignition switch.

The blower motor relay is located in the PDC in the engine compartment. The relay cannot be repaired and, if faulty or damaged, it must bereplaced.

When the ignition switch is in the On position, the relay is energized by a fused battery feed signal to the relay coil. The relay control circuit isprotected by a fuse located in the junction block. When the relay is de-energized, the blower motor receives no battery feed. See the Diagnosis andTesting section of this group for more information on the operation of the relay.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 24

Blower Motor Relay: Testing and Inspection

Blower Motor Relay

Fig 40 Power Distribution Center

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 in the PDC 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 fuse in the junction block 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 25

Blower Motor Relay: Service and Repair

Fig 40 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 blower motor relay identification and location.4. Unplug the blower motor clutch relay from the PDC.5. Install the blower motor 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.8. 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

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Component Locations > Page 30

Dakota 4WD V6-3.9L VIN X (1997)

Power Distribution

Fig 27 Power Distribution Center

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Component Locations > Page 31

Pinout

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 32

Compressor Clutch Relay: Description and Operation

Fig 27 Power Distribution Center

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 33

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 fuse in the PDC 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 in the junctionblock as required.

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 34

Compressor Clutch Relay: Service and Repair

Fig 27 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.8. Test the relay operation.

> Relays and Modules > Relays and Modules - Instrument Panel > Central Timer Module ( CTM ) Low Option <--> [Audible Warning Device Control Module] > Component Information > Locations

Central Timer Module ( CTM ) Low Option: Locations

> Relays and Modules > Relays and Modules - Instrument Panel > Central Timer Module ( CTM ) Low Option <--> [Audible Warning Device Control Module] > Component Information > Diagrams > Diagram Information and

Instructions

Central Timer Module ( CTM ) Low Option: Diagram Information and Instructions

Circuit Function

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.

Circuit Information

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Dakota 4WD V6-3.9L VIN X (1997)

Wire Code Identification

Wire Color Code Chart

Each wire shown in the diagrams contains a code which identifies the main circuit, part of the main circuit, gauge of wire, and color.

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.

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Dakota 4WD V6-3.9L VIN X (1997)

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.

Electrostatic Discharge (ESD) Sensitive Devices

Electrostatic Discharge Symbol

(ESD)

All Electrostatic Discharge sensitive components are solid state and a symbol is used to indicate this. When handling any component with thissymbol, comply with the following procedures to reduce the possibility of electrostatic charge build-up on the body and inadvertent discharge into thecomponent. If it is not known whether the part is ESD sensitive, assume that it is.

1. Always touch a known good ground before handling the part. This should be repeated while handling the part, especially after sliding across a seat,
sitting down from a standing position, or walking a distance.

2. Avoid touching electrical terminals of the part, unless instructed to do so by a written procedure.3. When using a voltmeter, be sure to connect the ground lead first.4. Do not remove the part from its protective packing until it is time to install the part.5. Before removing the part from its package, ground the package to a known good ground on the vehicle.

Fasteners

Shock Tower To Spring Minimum Clearance Area

CAUTION:

NO

At no time when servicing a vehicle, can a sheet metal screw, bolt, or other metal fastener be installed in the strut tower to take the place ofan original plastic clip. Also, holes can be drilled into the front strut tower in the area shown in for the installation of any metal fasteners into thestrut tower.

Because of the minimum clearance in this area , installation of metal fasteners could damage the coil spring coating and lead to a corrosion failure of thespring. If a plastic clip is missing, or is lost or broken during servicing of a vehicle, replace it only with the equivalent part listed in the parts catalog.

Notes, Cautions and Warnings

Additional important information is presented in three ways: Notes, Cautions, and Warnings.

NOTES

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Dakota 4WD V6-3.9L VIN X (1997)

are used to help describe how switches or components operate to complete a particular circuit. They are also used to indicate differentconditions that may appear on the vehicle. For example, an up-to and after condition.

are used to indicate information that could prevent making an error that may damage the vehicle.CAUTIONS

WARNINGS

provide information to prevent personal injury and vehicle damage. Below is a list of general warnings that should be followed any time avehicle is being serviced.

WARNING:

- ALWAYS WEAR SAFETY GLASSES FOR EYE PROTECTION.

- USE SAFETY STANDS ANYTIME A PROCEDURE REQUIRES BEING UNDER A VEHICLE.

- BE SURE THAT THE IGNITION SWITCH ALWAYS IS IN THE OFF POSITION, UNLESS THE PROCEDURE REQUIRES IT TO BE ON.

­SET THE PARKING BRAKE WHEN WORKING ON ANY VEHICLE. AN AUTOMATIC TRANSMISSION SHOULD BE IN PARK. AMANUAL TRANSMISSION SHOULD BE IN NEUTRAL.

- OPERATE THE ENGINE ONLY IN A WELL-VENTILATED AREA.

- KEEP AWAY FROM MOVING PARTS WHEN THE ENGINE IS RUNNING, ESPECIALLY THE FAN AND BELTS.

­TO PREVENT SERIOUS BURNS, AVOID CONTACT WITH HOT PARTS SUCH AS THE RADIATOR, EXHAUST MANIFOLD(S), TAILPIPE, CATALYTIC CONVERTER, AND MUFFLER.

- DO NOT ALLOW FLAME OR SPARKS NEAR THE BATTERY. GASES ARE ALWAYS PRESENT IN AND AROUND THE BATTERY.

- ALWAYS REMOVE RINGS, WATCHES, LOOSE HANGING JEWELRY, AND LOOSE CLOTHING.

Positive Temperature Coefficient

Positive Temperature Coefficient (PTC) devices are being used for circuit protection. These PTC's act like a solid state fuse. They are located in thejunction block, and are used to protect such items as: power door lock motors, power windows, and various engine solenoids.

Positive Temperature Coefficient Symbol

A special symbol is used to identify these in the wiring diagrams.

Symbols

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Dakota 4WD V6-3.9L VIN X (1997)

> Relays and Modules > Relays and Modules - Instrument Panel > Central Timer Module ( CTM ) Low Option <--> [Audible Warning Device Control Module] > Component

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Dakota 4WD V6-3.9L VIN X (1997)

Symbol Identification

Various symbols are used throughout the Wiring Diagrams group. These symbols can be identified by referring to the Symbol Identification chart.

Take-Outs

The abbreviation is used in the Component Location group to indicate a point at which the wiring harness branches out to a component.T/O

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

Connector and Splice Identification

The connector and Splice numbering used in the vehicle has a letter prefix to identity what harness the connector/splice is located in. A list of these letterdesignations follows:

- B - Body or EDW harness

- C - Dome harness

- D - Door harness

- E - Engine harness

- F - Fuel rail harness

- J - Jumper harness

- L - Liftgate harness

- P - Instrument panel harness

- S - Seat harness

- T - Trailer tow harness

When looking at a splice reference the alpha code for what harness the splice is located in will come first, then an S to indicate a splice, and finally thesplice number. An example of this would be ESO2.

- E - Indicates splice is in the engine harness

- S - Indicates a splice

- 02 - Indicates what splice it is in harness

Wire Color Codes

Wire Color Code Identification

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Dakota 4WD V6-3.9L VIN X (1997)

Wire Color Code Chart

Each wire shown in the diagrams contains a code which identifies the main circuit, part of the main circuit, gauge of wire and color. The color is shownas a two-letter code, which can be identified by referring to the Wire Color Code chart. If the wire has a tracer and it is a standard color, an asterisk willfollow the main wire color. If the tracer is non-standard, the main wire color will have a slash after it, followed by the tracer color.(/)

Connector and Terminal Replacement

six inches

1/2 inch

1. Disconnect battery.2. Disconnect the connector (that is to be repaired) from its mating half/component.3. Cut off the existing wire connector directly behind the insulator. Remove of tape from the harness.4. Stagger cut all wires on the harness side at intervals.5. Remove of insulation from each wire on the harness side. 1 inch

Stagger Cutting Wires (Typical)

6. Stagger cut the matching wires on the repair connector assembly in the opposite order as was done on the harness side of the repair. Allow extra
length for soldered connections. Check that the overall length is the same as the original.

1 inch

7. Remove of insulation from each wire.8. Place a piece of heat-shrink tubing over one side of the wire. Be sure the tubing will be long enough to cover and seal the entire repair area.

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Dakota 4WD V6-3.9L VIN X (1997)

Wire Repair

9. Spread the strands of the wire apart on each part of the exposed wires (Example 1).

10. Push the two ends of wire together until the strands of wire are close to the insulation (Example 2).11. Twist the wires together (Example 3).12. Solder the connection together using rosin core solder only. 13. Center the heat-shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of bothDo not use acid core solder.

ends of the tubing.

14. Repeat steps 8 through 13 for each wire.15. Re-tape the wire harness starting behind the connector and past the repair.1-1/2 inches 2 inches

16. Re-connect the repaired connector.17. Connect the battery and test all affected systems.

Connector Replacement

1. Disconnect the battery.2. Disconnect the connector (that is to be repaired) from its mating half/component.

Connector Locking Wedge

3. Remove the connector locking wedge, if required.

Terminal Removal

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Dakota 4WD V6-3.9L VIN X (1997)

Terminal Removal Using Special Tool

4. Position the connector locking finger away from the terminal using the proper pick from Special Tool Kit . Pull on the wire to remove the6680

terminal from the connector.

5. Reset the terminal locking tang, if it has one.6. Insert the removed wire in the same cavity on the repair connector.

7. Repeat steps 4 through 6 for each wire in the connector, being sure that all wires are inserted into the proper cavities.8. Insert the connector locking wedge into the repaired connector, if required.9. Connect the connector to its mating half/component.

10. Connect the battery and test all affected systems.

Diode Replacement

Diode Identification

Do not use acid core solder.

1. Disconnect the battery.2. Locate the diode in the harness and remove the protective covering.3. Remove the diode from the harness, pay attention to the current flow direction. 4. Remove the insulation from the wires in the harness. Only remove enough insulation to solder in the new diode.5. Install the new diode in the harness, making sure current flow is correct.6. Solder the connection together using rosin core solder only. 7. Tape the diode to the harness using electrical tape, making sure the diode is completely sealed from the elements.8. Re-connect the battery and test affected systems.

Terminal Replacement

1. Disconnect the battery.2. Disconnect the connector being repaired from its mating half/component.

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Dakota 4WD V6-3.9L VIN X (1997)

Connnector Locking Wedge Tab (Typical)

3. Remove the connector locking wedge, if required.

Terminal Removal

Terminal Removal Using Special Tool

4. Position the connector locking finger away from the terminal using the proper pick from Special Tool Kit . Pull on the wire to remove the6680

terminal from the connector.

6 inches

1 inch

1 inch

5. Cut the wire from the back of the connector.6. Remove of insulation from the wire on the harness side.7. Select a wire from the terminal repair assembly that best matches the color of the wire being repaired.8. Cut the repair wire to the proper length and remove of insulation.9. Place a piece of heat-shrink tubing over one side of the wire. Be sure the tubing will be long enough to cover and seal the entire repair area.

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Dakota 4WD V6-3.9L VIN X (1997)

Wire Repair

Do not use acid core solder.

10. Spread the strands of the wire apart on each part of the exposed wires (Example 1).11. Push the two ends of wire together until the strands of wire re close to the insulation (Example 2).12. Twist the wires together (Example 3).13. Solder the connection together using rosin core solder only. 14. Center the heat-shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of both
ends of the tubing.

1-1/2 inches 2 inches

15. Insert the repaired wire into the connector.16. Install the connector locking wedge, if required and re-connect the connector to its mating half/component.17. Re-tape the wire harness starting behind the connector and past the repair.18. Connect the battery and test all affected systems.

Terminal/Connector Repair-Molex Connectors

1. Disconnect the battery.2. Disconnect the connector from its mating half/component.

Molex Connector Repair

3. Insert the terminal releasing special tool into the terminal end of the connector.6742

Using Special Tool 6742

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Dakota 4WD V6-3.9L VIN X (1997)

6742

4. Using special tool , release the locking fingers on the terminal.5. Pull on the wire to remove it from the connector.6. Repair or replace the connector or terminal, as necessary.

Terminal/Connector Repair-Thomas and Betts Connectors

1. Disconnect the battery.2. Disconnect the connector from its mating half/component.

Thomas And Betts Connector Lock Release Tabs

3. Push in the two lock tabs on the side of the connector.

Removing Wire Terminal

6934
6934

4. Insert the probe end of Special Tool into the back of the connector cavity.5. Grasp the wire and Special Tool and slowly remove the wire and terminal from the connector.6. Repair or replace the terminal.7. Install the wire and terminal in the connector. Fully seat the terminal in the connector.

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Dakota 4WD V6-3.9L VIN X (1997)

Single Lock Tab

8. Push in the single lock tab on the side of the connector.

Wiring Repair

Wire Repair

When replacing or repairing a wire, it is important that the correct gauge be used as shown in the wiring diagrams. The wires must also be held securelyin place to prevent damage to the insulation.

1. Disconnect the battery negative cable.

2. Remove of insulation from each end of the wire.1 inch

3. Place a piece of heat-shrink tubing over one side of the wire. Be sure the tubing will be long enough to cover and seal the entire repair area.

4. Spread the strands of the wire apart on each part of the exposed wires (Example 1).

5. Push the two ends of wire together until the strands of wire are close to the insulation (Example 2).

6. Twist the wires together (Example 3).

7. Solder the connection together using rosin core solder only. Do not use acid core solder.

8. Center the heat-shrink tubing over the joint and heat using a heat gun. Heat the joint until the tubing is tightly sealed and sealant comes out of both
ends of the tubing.

9. Secure the wire to the existing ones to prevent chafing or damage to the insulation.

10. Connect the battery and test all affected systems.

Special Tools

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Dakota 4WD V6-3.9L VIN X (1997)

Probing Tool Package 6807

Terminal Pick 6680

Terminal Removing Tool 6932

Terminal Removing Tool 6934

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Instructions > Page 54

Central Timer Module ( CTM ) Low Option: Diagnostic Aids

Intermittent and Poor Connections

Most intermittent electrical problems are caused by faulty electrical connections or wiring. It is also possible for a sticking component or relay to cause aproblem. Before condemning a component or wiring assembly check the following items.

- Connectors are fully seated

- Spread terminals, or terminal push out

- Terminals in the wiring assembly are fully seated into the connector/component and locked in position

- Dirt or corrosion on the terminals. Any amount of corrosion or dirt could cause an intermittent problem

- Damaged connector/component casing exposing the item to dirt and moisture

- Wire insulation that has rubbed through causing a short to ground

- Some or all of the wiring strands broken inside of the insulation covering.

- Wiring broken inside of the insulation

Troubleshooting Tests

Before beginning any tests on a vehicle's electrical system, use the wiring diagrams to study the circuit. Also refer to Troubleshooting Wiring Problemssection.

Testing For Voltage

Testing For Voltage

1. Connect the ground lead of a voltmeter to a known good ground.2. Connect the other lead of the voltmeter to the selected test point. The vehicle ignition may need to be turned ON to check voltage. Refer to the
appropriate test procedure.

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Dakota 4WD V6-3.9L VIN X (1997)

Testing For Continuity

Testing For Continuity

1. Remove the fuse for the circuit being checked or disconnect the battery.2. Connect one lead of the ohmmeter to one side of the circuit being tested.3. Connect the other lead to the other end of the circuit being tested. Low or no resistance means good continuity.

Testing For A Short To Ground

6 to 8 Inches

1. Remove the fuse and disconnect all items involved with the fuse.2. Connect a test light or a voltmeter across the terminals of the fuse.3. Starting at the fuse block, wiggle the wiring harness every and watch the voltmeter/test light.4. If the voltmeter registers voltage or the test light glows, there is a short-to-ground in that general area of the wiring harness.

Testing For A Short-to-ground On Fuses Powering Several Loads

1. Refer to the wiring diagrams and disconnect or isolate all items on the fuse circuit.2. Replace the blown fuse.3. Supply power to the fuse by turning ON the ignition switch or re-connecting the battery.4. Start connecting the items in the fuse circuit, one at a time. When the fuse blows, the circuit with the short-to-ground has been isolated.

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Dakota 4WD V6-3.9L VIN X (1997)

Testing For Voltage Drop

Testing For Voltage Drop

1. Connect the positive lead of the voltmeter to the side of the circuit closest to the battery.2. Connect the other lead of the voltmeter to the other side of the switch or component.

3. Operate the item.4. The voltmeter will show the difference in voltage between the two points.

Troubleshooting Tools
TROUBLESHOOTING TOOLS

When diagnosing a problem in an electrical circuit, there are several common tools necessary. These tools are listed and explained below.

- - This is a test wire used to connect two points of a circuit. It can be used to bypass an open in a circuit.Jumper Wire

WARNING: NEVER USE A JUMPER WIRE ACROSS A LOAD, SUCH AS A MOTOR, CONNECTED BETWEEN A BATTERYFEED AND GROUND.

- Voltmeter

- This instrument is used to check for voltage on a circuit. Always connect the black lead to a known good ground and the red lead tothe positive side of the circuit.

CAUTION:

Most of the electrical components used in today's vehicle are solid state. When checking voltages in these circuits, use a meter with a or greater impedance.10 megohm

- Ohmmeter

- This instrument is used to check the resistance between two points of a circuit. Low or no resistance in a circuit can mean goodcontinuity or a shorted circuit.

CAUTION:

10 megohm

Most of the electrical components used in today's vehicle are solid state. When checking resistance in these circuits, use a meter witha or greater impedance. In addition, be sure the power is disconnected from the circuit. Circuits that are powered-up by the vehicleelectrical system can cause damage to the equipment and provide false readings.

Probing Tool

- Probing Tools 6807

- These tools are used for probing terminals in connectors. Select the proper size tool from Special Tool Package and insert itinto the terminal being tested. Use the other end of the tool to insert the meter probe.

Troubleshooting Wiring Problems

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.

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Instructions > Page 57

Central Timer Module ( CTM ) Low Option: Connector Views

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Dakota 4WD V6-3.9L VIN X (1997)

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Instructions > Page 59

Central Timer Module ( CTM ) Low Option: Electrical Diagrams

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 1 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 2 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 3 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 4 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 5 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 6 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 7 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 8 Of 10)

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Dakota 4WD V6-3.9L VIN X (1997)

Central Timer Module (Part 9 Of 10)

Central Timer Module (Part 10 Of 10)

To view sheets referred to in these diagrams, see .NOTE: Diagram Information and Instructions/Complete Body and Chassis Diagrams

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Central Timer Module ( CTM ) Low Option: Service Precautions

WARNING: ON VEHICLES EQUIPPED WITH AIR-BAGS, REFER TO AIRBAGS BEFORE ATTEMPTING ANY STEERING WHEEL,STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE PROPERPRECAUTIONS COULD RESULT IN ACCIDENTAL AIR- BAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY