B1077
DTC B1077: Windshield Wiper (As) Signal Error1. Clear the DTCs using the HDS.
2. Cycle the ignition switch to OFF and then back ON (II).
3. Turn the wiper switch to INT, LOW, then HIGH for at least 2 seconds each.
4. Check for DTCs using the HDS.
Is DTC B1077 indicated?
YES - Go to step 5.
NO - Intermittent failure. The windshield wiper system is OK at this time. Check pinfits and connections.
5. Check the No. 7 (10 A), No. 11 (30 A) and No. 21 (7.5 A) fuses in the under-dash fuse/relay box.
Are the fuses OK?
YES - Go to step 6.
NO - Replace the blown fuse and recheck the system.
6. Turn the ignition switch ON (II).
7. Select FUNCTIONAL TEST from the TEST MODE MENU, and operate the windshield wiper motor with FR WIPER (LOW) and FR WIPER (HIGH).
Does the windshield wiper motor run?
YES - Go to step 8.
NO - Go to step 15.
8. Turn the windshield wiper switch OFF, and stop the wiper arms at the park position. (If the wiper arms do not stop at the park position, turn the ignition switch OFF and stop them at the park position correctly.)
9. Turn the ignition switch ON (II).
Do the wipers begin to run as soon as the ignition switch is cycled ON?
YES - Go to step 14.
NO - Go to step 10.
10. Check the ON/OFF information of the Windshield Wiper Motor PARK Switch in the DATA LIST.
Is the information indicator OFF?
YES - Go to step 11.
NO - Faulty relay control module; replace the under-hood fuse/relay box.
11. Turn the ignition switch ON (II), and turn the windshield wiper switch ON at low speed.
12. Check the ON/OFF information of the Windshield Wiper Motor PARK Switch in the DATA LIST.
Does the DATA LIST information indicate ON and OFF alternately as the wipers pass the PARK position?
YES - Intermittent failure, the windshield wiper system is OK at this time. Check pinfits and connections.
NO - Go to step 13.
13. Check for continuity between the No. 4 terminal of the windshield wiper motor 5P connector and No. 5 terminal of the under-hood fuse/relay box 5P connector J.
Is there continuity ?
YES - Faulty windshield wiper motor; replace it.
NO - Repair an open in the WHT wire.
14. Check for continuity between the No. 5 terminal of the under-hood fuse/relay box 5P connector J and body ground.
Is there continuity?
YES - Repair a short in the WHT wire.
NO - Faulty windshield wiper motor; replace it.
15. Turn the ignition switch OFF, and check the No. 11 (30 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 16.
NO - Replace the blown fuse and recheck the system.
16. Turn the ignition switch ON (II).
17. Check for voltage between the No. 2 terminal of the windshield wiper motor 5P connector and body ground.
Is there battery voltage?
YES - Go to step 18.
NO - Repair an open in the GRN wire.
18. Check for continuity between the No. 3 and No. 5 terminals of the windshield wiper motor 5P connector and the No. 2 and No. 4 terminal of the under-hood fuse/relay box 5P connector J.
Is there continuity?
YES - Go to step 19.
NO - Repair an open in the BLU or YEL wire.
19. Perform the wiper motor test. Testing and Inspection
Does the wiper motor operate correctly?
YES - Faulty relay module; Replace the under-hood fuse/relay box.
NO - Replace the windshield wiper motor.