NOTE:
1. Back-up lights check:
Are the back-up lights on?
YES
Go to step 6.
NO
Go to step 2.
2. Back-up light bulbs check:
Are the back-up light bulbs OK?
YES
Go to step 3.
NO
Replace the back-up light bulb, then retest.
3. Fuse check:
Check the following fuse.
Is the fuse OK?
YES
The fuse is OK. Reinstall the fuse, then go to step 4.
NO
Replace the fuse. Turn the vehicle to the ON mode, then to the OFF (LOCK) mode. If the fuse blows again, repair the short to ground on the No. C35 (7.5 A) fuse circuit.
4. Back-up light switch check 1:
Back-up light switch 4P connector
Is there continuity when the shift lever is in reverse, and no continuity when the shift lever is in neutral?
YES
Repair an open in the back-up light switch wires between the back-up light switch and the under-dash fuse/relay box.
NO
The back-up light switch wires are not open. Go to step 5.
5. Back-up light switch check 2:
Check the back-up light switch.
Is the back-up light switch OK?
YES
Check the reverse shift mechanism in the transmission.
NO
Replace the back-up light switch.
6. Back-up light switch performance check:
Check the parameter(s) below with the HDS.
Does it indicate ON when the shift lever is in reverse, and OFF when the shift lever is in neutral?
YES
Go to step 9.
NO
Go to step 7.
7. Body electrical system DTC check:
Check for gauge control module DTCs with the HDS.
Are any DTCs indicated?
YES
Go to indicated DTC's troubleshooting.
NO
Go to step 8.
8. Open wire check (BACK LT- line):
Is there battery voltage?
YES
The BACK LT- wire is OK. Replace the MICU.
NO
Repair an open in the BACK LT- wire between the back-up light switch and the under-dash fuse/relay box.
9. VSA modulator-control unit check:
NOTE: Drive the vehicle on the road, not on a lift.
Is DTC 111-11 indicated?
YES
Go to step 10.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
10. VSA modulator-control unit check (update):
NOTE: Drive the vehicle on the road, not on a lift.
Is DTC 111-11 indicated?
YES
Check for loose terminals and poor connections in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.
NO
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.