U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM
For a complete wiring diagram Refer to the Wiring Information.
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When Monitored:
Continuously with the ignition on, one valid CAN message received at least once, and no U0002-CAN C Bus Off Performance DTC present.
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Set Condition:
When the Anti-Lock Brake Module detects an incorrect CAN message from the Engine Module.
Possible Causes |
|---|
| ABM CAN BUS DTCS |
| ENGINE DTCS |
| ANTI-LOCK BRAKE MODULE |
1. CHECK FOR DTC U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM
| NOTE: | This DTC must be active for the results of this test to be valid. |
| 1. | Turn the ignition on. |
| 2. | With the scan tool, record and erase DTCs. |
| 3. | Cycle the ignition switch from off to on. |
| 4. | With the scan tool, read DTCs. |
Does the scan tool display: U0401-IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM?
Yes
- Go To 2
No
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Perform the ABS-INTERMITTENT CONDITION TEST (Refer to 28 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS)
- Standard Procedure).
2. CHECK IF TIPM CAN BUS DTCs.ARE PRESENT
| 1. | With the scan tool, read TIPM DTCs. |
Are there any TIPM CAN BUS DTCs.present?
Yes
- Refer to the appropriate diagnostic (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing).
No
-
Go To 3
3. CHECK IF ENGINE DTCs.ARE PRESENT
| 1. | With the scan tool, read Engine DTCs. |
Are there any Engine DTCs.present?
Yes
- Diagnose the appropriate symptom (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing).
No
- Using the schematics as a guide, check the Anti-Lock Brake Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-Lock Brake Module in accordance with the Service Information.
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Perform ABS VERIFICATION TEST (Refer to 28 - DTC-Based Diagnostics/MODULE, Antilock Brake (ABS)
- Standard Procedure).