Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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|---|---|---|---|
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1
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VERIFY OTHER DTC HAS BEEN RECORDED
• If any of DTC C1186 and/or C1266 has also been stored?
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Yes
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Go to applicable DTC inspection.
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No
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Go to next step.
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2
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INSPECT ABS FUSE CONDITION
• Is ABS fuse (60 A) normal?
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Yes
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Go to next step.
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No
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Replace fuse, then go to Step 6.
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3
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INSPECT MOTOR RELAY POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Disconnect DSC HU/CM connector.
• Turn ignition key to ON (engine OFF).
• Measure voltage between DSC HU/CM terminal D (harness side) and ground.
• Is voltage B+?
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Yes
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Go to next step.
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No
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Repair or replace harness for open circuit between battery positive terminal and DSC HU/CM terminal D, then go to Step 9.
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4
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INSPECT PUMP MOTOR GROUND CIRCUIT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM terminal B (harness side) and ground.
• Is there continuity?
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Yes
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Go to next step.
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No
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Repair or replace harness for open circuit between DSC HU/CM terminal B and ground, then go to Step 6.
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5
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VERIFY PUMP MOTOR OPERATION
• Turn ignition key to OFF.
• Connect all disconnected connectors.
• Connect WDS or equivalent to DLC-2.
• Turn ignition key to ON (engine OFF).
• Access ABS_POWER and PMP_MOTOR active command modes using WDS or equivalent.
• Does pump motor operate?
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Yes
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Go to next step.
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No
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Repair DSC HU/CM, then go to next step.
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6
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VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
(See Clearing DTCs Procedures.)
• 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
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Replace DSC HU/CM, then go to next step.
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No
|
Go to next step.
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7
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VERIFY THAT NO OTHER DTCS ARE PRESENT
• Are any other DTCs output?
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Yes
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Go to the applicable DTC inspection.
(See DTC Table.)
|
|
No
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DTC troubleshooting completed.
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