Dodge Dakota (R1). Manual — part 104

TEST

ACTION

APPLICABILITY

2

Turn the ignition on.
With the DRBIII

t, read DTC’s.

With the DRBIII

t, erase DTC’s.

Turn the ignition off.
Turn the ignition on.
With the DRBIII

t, actuate the ABS pump motor.

Did the Pump Motor operate when actuated?

All

No

→

Go To

3

Yes

→

Go To

14

3

Turn the ignition off.
Remove and inspect the ABS Pump fuse 8 in the PDC.
Is the Fuse blown?

All

Yes

→

Go To

4

No

→

Go To

8

4

Turn the ignition off.
Visually inspect the Fused B(+) Circuit in the wiring harness from the PDC to the
CAB. Look for any sign of an Intermittent Short to Ground.
Is the wiring harness OK?

All

Yes

→

Go To

5

No

→

Repair the Fused B(+) Circuit shorted to ground.
Perform ABS VERIFICATION TEST - VER 1.

5

Turn the ignition off.
Remove the ABS PUMP Fuse 8 from the Power Distribution Center (PDC).
Disconnect the CAB connector.
Note: Check connector - Clean/repair as necessary.
Using a test light connected to 12 volts, probe the Fused B (+) Circuit.
Is the test light on?

All

Yes

→

Repair the Fused B(+) circuit short to ground.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Go To

6

6

Turn the ignition off.
Remove the ABS PUMP Fuse 8 from the PDC.
The CAB must be connected for the results of this test to be valid.
Using a test light connected to 12 volts, probe the Fused B (+) circuit in the PDC.
Is the test light on?

All

Yes

→

Replace the Controller Antilock Brake in accordance with the
Service Information. Refer to the symptom *Replacing the Con-
troller Antilock Brake for additional information.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Go To

7

7

Turn the ignition off.
If there are no possible causes remaining, view repair.

All

Repair

Replace the ABS Pump Motor Fuse.
Perform ABS VERIFICATION TEST - VER 1.

35

BRAKES (CAB)

PUMP MOTOR FAULT —

Continued

TEST

ACTION

APPLICABILITY

8

Turn the ignition on.
Using a 12-volt test light connected to ground, check the B+ supply to Fuse 8 in the
PDC.
Is the B+ supply OK?

All

Yes

→

Go To

9

No

→

Repair the B+ supply for an open.
Perform ABS VERIFICATION TEST - VER 1.

9

Turn the ignition off.
Disconnect Pump Motor Connector.
Connect a 10 gauge jumper wire between pump motor Fused B (+) circuit and a 40
Amp Fused B (+) circuit.
Connect a 10 gauge jumper wire between pump motor ground circuit and a known
good body ground.
Monitor Pump Motor operation.
Is the pump motor running?

All

Yes

→

Go To

10

No

→

Replace the ABS Pump Motor/Hydraulic Control Unit assembly.
Perform ABS VERIFICATION TEST - VER 1.

10

Turn the ignition off.
Remove the ABS PUMP Fuse 8 from the Power Distribution Center (PDC).
Disconnect the CAB connector.
Note: Check connector - Clean/repair as necessary.
Measure the resistance of the Fused B (+) circuit between the PDC Fuse Terminal
and the CAB connector.
Is the resistance below 10 ohms?

All

Yes

→

Go To

11

No

→

Repair the Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.

11

Turn the ignition off.
Disconnect CAB Connector C1.
Note: Check connector - Clean/repair as necessary.
Measure the resistance of the CAB ground circuits.
Is the resistance below 1.0 ohm?

All

Yes

→

Go To

12

No

→

Repair the ground circuit circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.

12

Turn the ignition on.
With the DRBIII

t, enable pump motor actuation.

NOTE: Pump motor will not operate, but voltage will be applied.
Measure the voltage drop across the ABS ground circuit connection, with pump motor
actuation enabled.
Is the voltage below 0.1 volt?

All

Yes

→

Go To

13

No

→

Repair the Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.

36

BRAKES (CAB)

PUMP MOTOR FAULT —

Continued

TEST

ACTION

APPLICABILITY

13

If there are no potential causes remaining, view repair.

All

Repair

Replace the Controller Anti-Lock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.

14

Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?

All

Yes

→

Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Test Complete.

37

BRAKES (CAB)

PUMP MOTOR FAULT —

Continued

Symptom:

RAM READ/WRITE

When Monitored and Set Condition:

RAM READ/WRITE

When Monitored:

Ignition on.

Set Condition:

Inability to set and subsequently recognize as being set any bit in the

RAM. OR Inability to clear and subsequently recognize as being cleared any bit in the
RAM.

POSSIBLE CAUSES

RAM READ/WRITE DTC CONDITION PRESENT

INTERMITTENT DTC

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, erase DTC’s.

Turn the ignition off.
Turn the ignition on.
With the DRBIII

t, read DTC’s.

Is the RAM READ/WRITE DTC present?

All

Yes

→

Replace the Controller Antilock Brake in accordance with the
Service Information. Refer to the symptom *Replacing the Con-
troller Antilock Brake for additional information.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Go To

2

2

Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?

All

Yes

→

Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.

No

→

Test Complete.

38

BRAKES (CAB)