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DTC Troubleshooting: U0100
DTC U0100: Gauge Control Module Lost Communication With ENG/AT
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DTC Description |
DTC |
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U0100 Gauge control module lost communication with ENG/AT |
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NOTE:
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If you have any loss of communication DTCs for the PCM, troubleshoot those DTCs first. |
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1. |
Problem verification:
Problem verification
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?1. |
Clear the DTCs with the HDS.
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?2. |
Turn the ignition switch to LOCK (0) and then back to ON (II), or 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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U0100 Gauge control module lost communication with ENG/AT |
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Is DTC U0100 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. |
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode. |
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?2. |
Jump the SCS line with the HDS.
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?3. |
Disconnect the following connectors.
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?4. |
Check for continuity between test points 1 and 2 respectively.
K24W1 engine
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Test condition |
IG LOCK (0) or OFF mode
PCM connector A (51P): disconnected
Gauge control module connector A (32P): disconnected |
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Test circuit |
F CAN-H |
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Test point 1 |
Gauge control module connector A (32P) No. 19 (WHT) |
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Test point 2 |
PCM connector A (51P) No. 2 (WHT) | |
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Test circuit |
F CAN-L |
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Test point 1 |
Gauge control module connector A (32P) No. 20 (RED) |
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Test point 2 |
PCM connector A (51P) No. 1 (RED) | |
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J35Y1, J35Y2 engines
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Test condition |
OFF mode
PCM connector A (51P): disconnected
Gauge control module connector A (32P): disconnected |
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Test circuit |
F CAN-H |
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Test point 1 |
Gauge control module connector A (32P) No. 19 (WHT) |
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Test point 2 |
PCM connector A (51P) No. 9 (WHT) | |
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Test circuit |
F CAN-L |
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Test point 1 |
Gauge control module connector A (32P) No. 20 (RED) |
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Test point 2 |
PCM connector A (51P) No. 10 (RED) | |
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Is there continuity?
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An open or poor connection in the F CAN wires between the PCM and the gauge control module.? | | 