PRE-RELEASE
INSPECTION
| INSPECTION |
DIAGNOSIS:
The AT OIL TEMP warning light circuit is open or shorted.
TROUBLE SYMPTOM:
| • |
When the ignition switch is turned to ON (engine
OFF), AT OIL TEMP warning light does not illuminate normally.
|
|
WIRING DIAGRAM:
CHECK FUSE (No. 13).
Remove the fuse (No. 13).Is the fuse (No. 13) blown out?
| Yes |
Replace the fuse (No. 13). If replaced fuse (No. 13) is blown out easily, repair short circuit in harness between fuse (No. 13) and combination meter.
| No |
CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND IGNITION SWITCH.
Turn the ignition switch to OFF.Remove the combination meter.
Turn the ignition switch to ON (engine OFF).
Measure the voltage between combination meter connector and chassis ground.
Connector & terminal
(i11) No. 7 (+) — Chassis ground (−):
Is the voltage more than 9 V?
| Yes |
| No |
Repair the open circuit in harness between combination meter and battery.
CHECK OPEN CIRCUIT OF HARNESS.
Turn the ignition switch to OFF.Disconnect the connector from TCU.
Measure the resistance of TCU connector between combination meter connector.
Connector & terminal
(B56) No. 13 — (i10) No. 5:
Is the resistance less than 1 Ω?
| Yes |
| No |
Repair the open circuit in harness between TCM and combination meter, and poor contact in coupling connector.
CHECK COMBINATION METER.
Measure the resistance between combination meter connector and chassis ground.Connector & terminal
(i10) No. 5 (+) — Chassis ground (−):
Is the resistance less than 1 MΩ?
| Yes |
| No |
Repair the ground short circuit in harness between TCM and combination meter.
CHECK INPUT SIGNAL FOR TCM.
Connect the connector to combination meter.Turn the ignition switch to ON (engine OFF).
Measure the voltage between TCM connector and chassis ground.
Connector & terminal
(B56) No. 13 (+) — Chassis ground (−):
Is the voltage less than 9 V?
| Yes |
Replace the TCM.
| No |
Replace the combination meter.
