Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-801A

Condition




The diagnostic trouble code (DTC) is stored if the voltage from the system relay to the engine control module (ECM) is below 3 V (Signal missing) or if the power supply from the engine control module (ECM) to the throttle unit is below 8 V (Faulty signal).
The diagnostic trouble code (DTC) is diagnosed when the ignition is on.

Substitute value
None.

Possible source

Signal missing
- Faulty charging system
- Contact resistance in the terminals
- Open-circuit in the signal cable for the system relay
- Damaged system relay.

Faulty signal
- Faulty charging system
- Contact resistance in the terminals
- Damaged system relay.

Fault symptom[s]
- The starter motor does not turn
- The starter motor turns but the engine does not start
- The engine runs poorly.