Check for continuity between back-up light switch 2P connector terminals No. 1 and No. 2. There should be continuity only when the shift lever is in reverse.
If the test result is OK, install the parts in the reverse order of removal.
If the test result is not OK, go to step 3.
3.
Remove the back-up light switch (A) and the 18 mm sealing washer (B).
4.
Check for continuity between back-up light switch 2P connector terminals No. 1 and No. 2. There should be continuity when the switch end (C) is pressed, and no continuity when the switch end is released.
If the test result is OK, check the reverse shift mechanism in the transmission.
If the test result is not OK, replace the back-up light switch.
3.
All Removed Parts - Install
1.
Install the parts in the reverse order of removal with a new 18 mm sealing washer.
