C0020-1C

C0020-1C-ABS PUMP MOTOR CONTROL - CIRCUIT VOLTAGE OUT OF RANGE





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on and no system under voltage condition present.

- Set Condition:
If the Anti-lock Brake System (ABS) Module detects that the pump motor has a poor ground or the ABS has internal pump motor driver shorted, this DTC will be active.





1. VERIFY THE DTC IS ACTIVE

NOTE: This DTC must be active for the results of this test to be valid.

1. Turn the ignition on.
2. With the scan tool, read and record the DTCs.
3. With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
4. With the scan tool, erase the DTCs.
5. Start the engine.
6. With the scan tool, read and record the DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION TEST. Testing and Inspection.

2. (Z802) GROUND CIRCUITS OPEN OR HIGH RESISTANCE




1. Using a 12-volt test light connected to 12-volts, check the (Z802) Ground circuits.

NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Is the test light illuminated and bright?

Yes

- Go To 3

No

- Repair the (Z802) Ground circuit(s) for an open circuit or high resistance.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

3. INTEGRATED CONTROL UNIT (ICU)
1. Turn the ignition off to the lock position.
2. Inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
3. Inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
4. Perform any Technical Service Bulletins that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- NOTE: For this DTC it is necessary to replace both the ABS Module and the HCU as a complete unit.
- Replace the Integrated Control Unit (ICU). Hydraulic Control unit (HCU) - Removal.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.