Code 23

This DTC flashes the CHECK TRANS indicator and sets the BACKUP MODE.

CIRCUIT DESCRIPTION:
- The Throttle Position Sensor (TPS) provides a voltage signal that changes relative to the throttle plate position. Signal voltage between connector C-91 terminals C5 and C6 will vary from about 0.4 at idle to about 4.6 volts at wide open throttle.
- The Engine Control Module (ECM) also receives this signal. This TPS is a variable resistance with one side (connector E-5 terminal 2) connected only to the ECM connector to have the 5 volts supply voltage. The other side (connector E-5 terminal 1) is connected to the Transmission Control Module (TCM) (floating ground) and the ECM (ground). The "middle" (the wiper) (connector E-5 terminal 3) is connected to the TCM and the ECM.
- The TCM monitors output voltage from the TPS and determines fuel delivery based on throttle valve angle (driver demand).
- This TPS is an electrical component and must not be soaked in any liquid cleaner or solvent, as damage may result.

DIAGNOSTIC AIDS:
- This Diagnostic is not an electrical test done by the TCM but a test between different information ("logic test").
- Detection conditions:
- This detects the terminals C5 and C6 open or the connector E-5 open.
- Throttle value opening > 42%.
- Engine Speed < 2200 RPM.
- Vehicle Speed <3 Km/h.
- No DTC: Engine Speed DTC13, Output Speed DTC 11. Downshift Protection DTC62.
- Only with Selector Lever in Park or Neutral.
- The detection is authorized only during 6 seconds after the engine is cranked.
- The conditions need to be present for at least 3 seconds.
- Action after the detection time: BACKUP MODE.
- Recovery conditions: To recover do an IGNITION CYCLE.