Checking Back-Up (Reversing) Lamp Switch/Gear-Shift Position Sensor Signal

Checking back-up (reversing) lamp switch/gear-shift position sensor signal

Check back-up (reversing) lamp switch/gear-shift position sensor signal




- Ignition on
- Put into back-up (reverse) gear.
- Select scrolling values.
Read off the value for gear position.
The value should be REAR when in back-up (reverse) gear and STILL/ADV in neutral/forward gear.





Is the reading OK?

Yes - No Fault Found

No - Check, connectors and cable

-------------------------------------------------

Check, connectors and cable
Check the RTI control module and back-up (reversing) light switch (cars with automatic transmission: gear-shift position sensor) connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
check cable between the control module #B11 and back-up (reversing) light switch terminal 2 (for cars with automatic transmission: gear-shift position sensor terminal 5) for an open-circuit. Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.

Other information:
- To access/replace the control module, see Replacing the control module, old system Replacing the Control Module, Old System.
- To access/replace the gear-shift position sensor, see Gear-shift position sensor, replacing Gear-Shift Position Sensor, Replacing.
- For connecting breakout box, see Connecting the breakout box Connecting the Breakout Box.









Continue - Verification

-------------------------------------------------

Verification

Hint: After carrying out the repair, check that the fault has been remedied as follows:












- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on
- Put into back-up (reverse) gear.
- Select scrolling values.
Read off the value for gear position.
The value should be REAR when in back-up (reverse) gear and STILL/ADV in neutral/forward gear.





Is the reading OK?

Yes - Fault has been remedied

No - Fault-tracing information

-------------------------------------------------

Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test


-------------------------------------------------