Dodge Ram Truck 1500-2500-3500. Manual — part 187

PUMP MOTOR STALLED — 68 (CONTINUED)

10.

WIRING HARNESS INSPECTION

Turn the ignition off.

Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.

Make sure the Pump Motor connector is secure.

Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.

Refer to any Technical Service Bulletins that may apply.

Were any problems found?

Yes

>> Repair the Left Front Wheel Speed Sensor Signal circuit for a short to voltage.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

No

>> Test Complete.

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BRAKES - ABS - ELECTRICAL DIAGNOSTICS

DR/DH

RAM READ/WRITE — 71

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Ignition on.

•

Set Condition:
The CAB is unable to change, recognize or clear a value (bit) in RAM.

Possible Causes

ANTI-LOCK BRAKE MODULE

Diagnostic Test

1.

ANTI-LOCK BRAKE MODULE

NOTE: Diagnose and repair any Powertrain Control Module VIN or Communication DTCs before continuing
with this test.
Turn the ignition on.

With the DRBIII

T

, clear DTCs.

Turn the ignition off.

Turn the ignition on.

With the DRBIII

T

, read DTCs.

Does the DTC reset?

Yes

>> Replace the Controller Antilock Brake in accordance with the Service Information.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

No

>> Inspect the wiring harness and connector on the CAB. Check for chafed, pierced, pinched, or partially

broken wires. Check the connector for broken hold down tab, bent or pushed out terminals. repair as
necessary.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

DR/DH

BRAKES - ABS - ELECTRICAL DIAGNOSTICS

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REAR RESET SWITCH CLOSED — 63

•

When Monitored:
Ignition on.

•

Set Condition:
When not in Antilock control mode and the reset swithc voltage is low.

Possible Causes

HYDRAULIC CONTROL UNIT

Diagnostic Test

1.

VERIFING DTC

Turn the ignition on.

With the DBRIII

T

, clear DTCs.

Turn the ignition off.

Turn the ignition on.

With the DBRIII

T

, read DTCs.

Does the DTC reset?

Yes

>> Replace the Hydraulic Control Unit in accordance with the Service Information.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

No

>> Test Complete.

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BRAKES - ABS - ELECTRICAL DIAGNOSTICS

DR/DH

ROM CHECKSUM – 71

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Ignition on.

•

Set Condition:
The SUM of all the storage bytes in the CAB’s ROM not equal to the original sum stored in ROM..

Possible Causes

ANTI-LOCK BRAKE MODULE

Diagnostic Test

1.

ANTI-LOCK BRAKE MODULE

NOTE: Diagnose and repair any Powertrain Control Module VIN or Communication DTCs before continuing
with this test.
Turn the ignition on.

With the DRBIII

T

, clear DTCs.

Turn the ignition off.

Turn the ignition on.

With the DRBIII

T

, read DTCs.

Does the DTC reset?

Yes

>> Replace the Controller Antilock Brake in accordance with the Service Information.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

No

>> Inspect the wiring harness and connector on the CAB. Check for chafed, pierced, pinched, or partially

broken wires. Check the connector for broken hold down tab, bent or pushed out terminals. repair as
necessary.

Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

DR/DH

BRAKES - ABS - ELECTRICAL DIAGNOSTICS

5 - 179