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DTC Troubleshooting: U129C
DTC U129C: Gauge Control Module Lost Communication With Multi Purpose Camera Unit
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DTC Description |
DTC |
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U129C Gauge control module lost communication with multi purpose camera unit |
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1. |
Problem verification:
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?1. |
Clear the DTCs with the HDS.
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?2. |
Press the engine start/stop button to select the OFF mode and then the ON mode. |
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?3. |
Wait for at least 6 seconds. |
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?4. |
Check for DTCs with the HDS.
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DTC Description |
DTC |
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U129C Gauge control module lost communication with multi purpose camera unit |
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Is DTC U129C indicated?
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Intermittent failure, the system is OK at this time. Check for loose or poor connections.? |
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2. |
Open wire check (F-CAN lines):
Open wire check (F-CAN lines)
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?1. |
Disconnect the following connector.
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?2. |
Connect terminals A and B with a jumper wire.
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Terminal A |
Multipurpose camera unit 20P connector No. 2 (WHT) |
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Terminal B |
Multipurpose camera unit 20P connector No. 13 (RED) | |
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?3. |
Disconnect the following connector.
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?4. |
Check for continuity between test points 1 and 2 respectively.
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Test condition |
OFF mode
Multipurpose camera unit 20P connector: disconnected
Gauge control module connector A (32P): disconnected |
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Test circuit |
F-CAN_H, F-CAN_L |
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Test point 1 |
Gauge control module connector A (32P) No. 19 (WHT) |
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Test point 2 |
Gauge control module connector A (32P) No. 20 (RED) | |
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Is there continuity?
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An open or poor connection in the F-CAN wires between the multipurpose camera unit and the gauge control module.? | |