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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INSPECT ABS FUSE CONDITION
• Is the ABS fuse (ABS 1 30A) normal?
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Yes
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Go to the next step.
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No
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Replace the ABS fuse, then go to Step 6.
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2
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VERIFY PUMP MOTOR OPERATION
• Turn the ignition switch off.
• Connect the WDS or equivalent to the DLC-2.
• Turn the ignition switch to the ON position.
• Access PMP_MOTOR active command modes using the WDS or equivalent.
• Does the pump motor operate?
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Yes
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Go to the next step.
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No
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Replace the DSC HU/CM, then go to Step 6.
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3
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INSPECT MOTOR RELAY POWER SUPPLY FOR OPEN CIRCUIT
• Turn the ignition switch off.
• Disconnect the DSC HU/CM connectors.
• Inspect for continuity between the DSC HU/CM terminal AT and the battery positive terminal.
• Is there continuity?
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Yes
|
Go to the next step.
|
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No
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Repair or replace the wiring harness, then go to Step 6.
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4
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INSPECT MOTOR RELAY POWER SUPPLY FOR SHORT CIRCUIT
• Inspect for continuity between the DSC HU/CM terminal AT and body ground.
• Is there continuity?
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Yes
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Repair or replace the wiring harness, then go to Step 6.
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No
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Go to the next step.
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5
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INSPECT PUMP MOTOR GROUND FOR OPEN CIRCUIT
• Inspect for continuity between the DSC HU/CM terminal B and body ground.
• Is there continuity?
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Yes
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Go to the next step.
|
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No
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Repair or replace the wiring harness, then go to Step 6.
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6
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VERIFY THAT THE SAME DTC IS NOT PRESENT
• Reconnect all disconnected connectors.
• Clear the DTCs from the memory.
(See Clearing DTCs Procedures.)
• Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.
• Are the same DTCs present?
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Yes
|
Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC HU/CM, then go to the next step.
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No
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Go to the 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.)
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No
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DTC troubleshooting completed.
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