DTC C1095

id040200802900

DTC
C1095
Motor relay, pump motor
DETECTION CONDITION
•  ABS motor stuck OFF when vehicle is started or during ABS operation, ABS motor ON is commanded.
•  ABS motor stuck ON when vehicle is started or during ABS operation, ABS motor OFF is commanded.
•  Motor monitor ON signal is not input after specified time when the motor signal is switched from ON to OFF by ABS HU/CM.
POSSIBLE CAUSE
•  Malfunction of fuse (ABS-P 30 A)
•  Open or short to ground circuit in harness between ABS HU/CM terminal Z and battery positive terminal
•  Open circuit in harness between ABS HU/CM terminal B and body ground
•  Stuck motor relay and/or ABS motor

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT ABS FUSE CONDITION
•  Is ABS fuse (ABS-P (30 A)) normal?
Yes
Go to next step.
No
Replace fuse, then go to Step 6.
2
VERIFY PUMP MOTOR OPERATION
•  Turn ignition key to OFF.
•  Connect WDS or equivalent to DLC-2.
•  Turn ignition key to ON (engine OFF).
•  Access PMP_MOTOR active command modes using WDS or equivalent.
•  Does pump motor operate?
Yes
Go to next step.
No
Replace ABS HU/CM, then go to Step 6.
3
INSPECT MOTOR RELAY POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
•  Turn ignition key to OFF.
•  Disconnect ABS HU/CM connector.
•  Measure continuity between ABS HU/CM terminal Z (harness side) and battery positive terminal.
•  Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open circuit between battery positive terminal and ABS HU/CM terminal Z, then go to Step 6.
4
INSPECT MOTOR RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND CIRCUIT
•  Measure continuity between ABS HU/CM terminal Z (harness side) and ground.
•  Is there continuity?
Yes
Repair or replace harness for short to ground circuit between battery positive terminal and ABS HU/CM terminal Z, then go to Step 6.
No
Go to next step.
5
INSPECT PUMP MOTOR GROUND CIRCUIT FOR OPEN CIRCUIT
•  Inspect continuity between ABS HU/CM terminal B (harness side) and ground.
•  Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open circuit between ABS HU/CM terminal B and ground, then go to next step.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Clear DTC from memory.
•  Start engine and drive vehicle at 10 km/h {6.2 mph} or above.
•  Gradually slow down and stop vehicle.
•  Is same DTC present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the ABS CM, then go to next step.
No
Go to next step.
7
VERIFY AFTER REPAIR PROCEDURE
•  Is there any other DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.