| CHECK HARNESS AND MODULE. |
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1) Disconnect the power supply CM connector (B420). 2) Make sure there is no moisture on the power supply CM and connector. |
| QUESTION | |
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Is there any moisture in the power supply CM attachment area, or on connectors, harness, or power supply CM? | |
| Yes | No |
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Repair any leaking rain and other causes of the moisture, and replace the power supply CM. |
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