U0100-LOST COMMUNICATION WITH ECM/PCM
 |
For a complete wiring diagram, refer to the Wiring Information.
Possible Causes
- When Monitored:
-
Set Condition:
If the Occupant Restraint Controller (ORC) fails to receive bus messages from the ECM/PCM for approximately 500 ms.
Possible Causes |
|---|
| (D65) CAN C BUS(+) CIRCUIT SHORTED TO VOLTAGE |
| (D64) CAN C BUS(-) CIRCUIT SHORTED TO GROUND |
| DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| TIPM NOT CONFIGURED CORRECTLY |
| ECM/PCM POWER AND GROUND |
| ENGINE CONTROL MODULE/POWERTRAIN CONTROL MODULE (ECM/PCM) |
| OCCUPANT RESTRAINT CONTROLLER (ORC) |
VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
| NOTE: | Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding. |
| 1. | Turn the ignition on. |
| 2. | With the scan tool, read ORC DTCs. |
Is the U0100-LOST COMMUNICATION WITH ECM/PCM DTC active?
Yes
- (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing) and perform the U0100-Lost Communication with ECM/PCM diagnostic procedure.
No
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.