1.CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ASSEMBLY RH CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM.
3) Measure the voltage between ECM and chassis ground.
Connector & terminal
(B137) No. 22 (+) — Chassis ground (−):
(B137) No. 23 (+) — Chassis ground (−):
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Is the voltage 5 V or more?
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Repair the short circuit to power in harness between ECM and tumble generator valve assembly RH connector.
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Replace the tumble generator valve assembly RH. 
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