| CHECK HARNESS BETWEEN ECM AND SECONDARY AIR COMBINATION VALVE RELAY. |
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Measure the resistance between ECM and chassis ground. Connector & terminal (B135) No. 15 — Chassis ground: |
| QUESTION | |
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Is the resistance 1 MΩ or more? | |
| Yes | No |
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Even if the malfunction indicator light illuminates, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector may be the cause. |
Repair ground short circuit of the harness between ECM and secondary air combination valve relay. |