Wipers/Washers - Headlight Washer Control Unit Input Test
16-160prose procedureHeadlight Washer Control Unit Input Test
Remove the dashboard lower panel and disconnect the 6-P connector from the control unit. Make the following input tests at the harness pins. If all tests prove OK, yet the system still fails to work, replace the control unit.
1
TerminalBLK
Test conditionUnder all conditions.
Test: desired resultCheck for continuity to ground: should be continuity.
Possible cause (If result is not obtained)Poor ground (G301, G401). An open in the wire.
2
TerminalWHT/BLK
Test conditionUnder all conditions.
Test: desired resultCheck for voltage to ground: should be battery voltage.
Possible cause (If result is not obtained)Blown No.3 (20A) fuse. An open in the wire.
3
TerminalGRN/WHT
Test conditionIgnition switch ON and headlight washer switch ON.
Test: desired resultCheck for voltage to ground: should be battery voltage.
Possible cause (If result is not obtained)Blown No.13 (15A) fuse. Faulty headlight washer switch. An open in the wire.
4
TerminalWHT/RED
Test conditionConnect the WHT/BLK terminal to the WHT/RED terminal.
Test: desired resultCheck the headlight washer motor operation: should run.
Possible cause (If result is not obtained)Faulty headlight washer motor. Poor ground (G301, G401). An open in the wire.
5
TerminalGRN/BLK
Test conditionIgnition switch ON.
Test: desired resultCheck for voltage to ground: should be battery voltage.
Possible cause (If result is not obtained)Blown No.13 (15A) fuse. An open in the wire.