Code 13

ENGINE SPEED FAILURE
This DTC flashes the CHECK TRANS indicator and set the BACKUP MODE.

CIRCUIT DESCRIPTION:
The ignition module sends a signal to the Transmission Control Module (TCM) that indicates engine speed in RPM. The Engine Control Module (ECM) also receives this signal. When the vehicle is in neutral gear and the engine is at idle, the engine speed should be approximately 800 RPM.

DIAGNOSTIC AIDS:
This Diagnostic is not an electrical test done by the TCM but a test between different information ("logic test").
- Detection conditions:
- Engine speed < or = 200 RPM.
- Output Speed > 1024 RPM.
- Acceleration > 2 Km/h/s.
- No DTC: Output Speed DTC 11, Downshift Protection DTC 62 or Mode Switch Illegal Position DTC 54.
- Selector Lever not in Park or Neutral.
- The conditions need to be present for at least 0.5 second.
- Action after the detection time: BACKUP MODE
- Recovery conditions: To recover do an IGNITION CYCLE