U0100-LOST COMMUNICATION WITH THE ECM/PCM
U0100-LOST COMMUNICATION WITH THE ECM/PCM
For a complete wiring diagram, refer to the Wiring Information.
Possible Causes-U0100
-
When Monitored:
Ignition run time is greater than one second.
Battery voltage between 9 and 16 volts.
Engine run time greater than three seconds.
-
Set Condition:
Bus messages not received from the Powertrain Control Module (ECM/PCM) for approximately two to five seconds.
Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| POWERTRAIN CONTROL MODULE POWER AND GROUND |
| TIPM NOT CONFIGURED CORRECTLY |
| POWERTRAIN CONTROL MODULE (ECM/PCM) |
| MODULE THAT SET THIS DTC |
ACTIVE DTC
| 1. | Ignition on, engine not running. |
| 2. | With the scan tool, select view DTCs. |
Is the DTC Active at this time?
Yes
No
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.