Malfunction Indicator Light Does Not Come On
DIAGNOSIS:
The malfunction indicator light circuit is open or shorted.
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), malfunction indicator light does not come on.
WIRING DIAGRAM:
DIAGNOSIS PROCEDURE - MALFUNCTION INDICATOR LIGHT DOES NOT COME ON
| Step | Check | Yes | No | |
|---|---|---|---|---|
| 1 CHECK OUTPUT SIGNAL FROM ECM.
|
Is the voltage less than 1 V? | Go to step 4. | Go to step 2 . | |
| 2 CHECK POOR CONTACT. Check for poor connection when shaking or pulling ECM connector and harness. |
Does the malfunction indicator light illuminate? | Repair the poor contact in ECM connector. | Go to step 3 . | |
| 3 CHECK ECM CONNECTOR. Check the connection of ECM connector. |
Is the ECM connector correctly connected? | Replace the ECM. < Ref. to ENGINE CONTROL MODULE (ECM) . > | Repair the connection of ECM connector. | |
| 4 CHECK HARNESS BETWEEN COMBINATION METER AND ECM CONNECTOR.
|
Is the resistance less than 1 | Go to step 5. | Repair the harness and connector.
NOTE:
In this case repair the following:
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| 5 CHECK POOR CONTACT. Check poor contact in combination meter connector. |
Is there poor contact in combination meter connector? | Repair the poor contact in combination meter connector. | Go to step 6 . | |
| 6 CHECK HARNESS BETWEEN COMBINATION METER AND IGNITION SWITCH CONNECTOR.
|
Is the voltage more than 10 V? | Replace the board of combination meter. < Ref. to COMBINATION METER . > | Check the following and repair if necessary.
NOTE:
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