NO.5 TCS OFF LIGHT AND TCS INDICATOR LIGHT DO NOT ILLUMINATE WITH IGNITION SWITCH ON

id040300879400

5

TCS OFF light does not illuminate with ignition switch on.

[TROUBLESHOOTING HINTS]

• Malfunction of instrument cluster or ABS/TCS HU/CM

• Improper configuration (ABS/TCS HU/CM)

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY AND SHORTS
Activate TRAC_SW (TCS OFF light) using WDS or equivalent.
Is error message displayed regarding communication between ABS/TCS CM and WDS or equivalent?
Yes
If a communication error message is displayed even after inspecting according to procedures displayed on the WDS or equivalent, go to Step 6.
No
Go to next step.
2
INSPECT TCS OFF LIGHT BULB FOR MALFUNCTIONS BY USING INSPECTION FUNCTION IN ABS/TCS HU/CM
Activate TRAC_SW (TCS OFF light) using WDS or equivalent
Does TCS OFF light illuminate?
Yes
Go to next step.
No
Go to step3.

3

CONFIRM DTC U1900 USING WDS OR EQUIVALENT
Retrieve DTC from PCM, ABS/TCS and instrument cluster.
Is DTC U1900 retrieved?
Yes
Go to next step.
No
Inspect instrument cluster. If OK, then go to step6.

4

CONFIRM THE FOLLOWING PIDS USING WDS OR EQUIVALENT
ABS_MSG
PCM_MSG
Is "not present" massage displayed on WDS or equivalent?
Yes
Replace the instrument cluster (open circuit in instrument cluster).
No
Network communication, for related system is malfunction.
Repair or replace as necessary.

5

CONFIRM DTC B2477 FOR INSTRUMENT CLUSTER USING WDS OR EQUIVALENT
Is DTC B2477 retrieved?
Yes
Re-configure the instrument cluster.
No
Replace ABS/TCS HU/CM.

*6

INSPECT WIRING HARNESS BETWEEN ABS/TCS HU/CM AND DLC-2 FOR CONTINUITY
Is there continuity between connector terminal O, R and DLC-2?
Yes
Go to next step.
No
Repair wiring harness between ABS/TCS HU/CM and DLC-2.

*7

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?
Yes
Repair wiring harness between ABS/TCS HU/CM (terminal P) and DLC-2.
No
Go to next step.

8

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?
 
Yes
Repair wiring harness between ABS/TCS HU/CM and DLC-2.
No
Replace ABS/TCS HU/CM (communication circuit malfunction in ABS/TCS HU/CM).

• When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors
while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged.