| CHECK HARNESS BETWEEN ECM AND SECONDARY AIR PUMP RELAY. |
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Measure the voltage between ECM and chassis ground. Connector & terminal (B136) No. 8 (+) — Chassis ground (−): |
| QUESTION | |
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Is the voltage 10 V or more? | |
| Yes | No |
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Repair the short to power supply in the harness between ECM and secondary air pump relay terminal. |
Temporary poor contact occurs. Check the poor contact of connector. |