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1
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY AND SHORTS
Perform DTC inspection.
Is error message displayed regarding communication between ABS/TCS HU/CM and WDS or equivalent?
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Yes
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If a communication error message is displayed even after inspecting according to procedures displayed on WDS or equivalent, go to Step 8.
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No
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Go to next step.
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2
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INSPECT FOR DTCS IN ABS/TCS HU/CM
Have DTCs been recorded in memory?
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Yes
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Perform inspection using appropriate DTC.
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No
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Go to next step.
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3
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INSPECT PID/DATA IN ABS/TCS HU/CM
Inspect the following items using WDS or equivalent PID/DATA monitor function.
• TRAC_SW (TCS OFF switch)
Is TRAC_SW ON displayed on WDS or equivalent?
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Yes
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Go to Step 6 (TCS OFF switch system malfunction).
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No
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Go to next step.
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*4
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INSPECT FOR SHORT TO GROUND IN ABS/TCS HU/CM
Disconnect ABS/TCS HU/CM connector.
Does TCS OFF light go out with ignition switch on?
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Yes
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Replace ABS/TCS HU/CM (short to ground in ABS/TCS HU/CM).
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No
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Go to next step.
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*5
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INSPECT TCS OFF SWITCH
Disconnect TCS OFF switch connector.
Is TRAC_SW ON displayed on WDS or equivalent?
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Yes
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Go to next step.
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No
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Replace TCS OFF switch (TCS will not turn off, even though switch is OFF).
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*6
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VERIFY WHETHER MALFUNCTION IS IN WIRING HARNESS (BETWEEN ABS/TCS HU/CM AND TCS OFF SWITCH FOR SHORT TO GROUND) OR ABS/TCS HU/CM
Is there continuity between connector terminal P and ground?
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Yes
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Repair wiring harness between ABS/TCS HU/CM (terminal P) and TCS OFF switch.
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No
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Go to next step.
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*7
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY
Is there continuity between connector terminal O, R and DLC-2?
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Yes
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Go to next step.
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No
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Repair wiring harness between ABS/TCS HU/CM and DLC-2.
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*8
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR SHORT TO B+
Is voltage approx. 12 V at connector terminal O, R?
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Yes
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Repair wiring harness between ABS/TCS HU/CM (terminal P) and DLC-2.
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No
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Go to next step.
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*9
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INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR SHORT TO GROUND
Is there continuity between connector terminal O, R and ground?
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Yes
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Repair wiring harness between ABS/TCS HU/CM and DLC-2.
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No
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Replace ABS/TCS HU/CM (communication circuit malfunction in ABS/TCS HU/CM).
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