Wiper/Washer Switch Input Test

Except KQ model:


1.Before troubleshooting the wiper/washer system, perform the multiplex integrated control system test mode A troubleshooting.

2.Remove the dashboard lower cover.

3.Remove the steering column covers.

4.Disconnect the 8P connector (A) from the wiper/washer switch (B).

5.Inspect the connector and socket terminals to be sure they are all making good contact.

  • If the terminals are bent, loose or corroded, repair them as nessesary, and recheck the system.
  • If the tarminals look OK, go to 6.

6.With the connector still disconnected, make these input tests at the connector.

  • If any test indicates a problem, find and correct the cause, then recheck the system.
  • If all the input tests prove OK, replace the wiper/washer switch (combination switch control unit).

Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 
3 BLK Under all conditions Check for continuity to ground:
There should be continuity. 
  • Poor ground (G501, G601)
  • An open in the wire
 
8 WHT/RED Under all conditions Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 15 (40A) fuse in the under-dash fuse/relay box
  • Blown No. 7 (10A) fuse in the under-dash fuse/relay box
  • An open in the wire
 
7 YEL Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage. 
  • Blown No. 21 (7.5A) fuse in the under-dash fuse/relay box
  • An open in the wire
 
5 GRN/WHT Under all conditions Check for continuity between the No. 5 terminal and under-hood fuse/relay box 10P connector No. 5 terminal:
There should be continuity. 
  • An open in the wire
 
4 LT GRN Under all conditions Check for continuity between the No. 4 terminal and under-dash fuse/relay box X connector No. 27 terminal:
There should be continuity. 
  • An open in the wire
 
1 WHT Under all conditions Check for continuity bwtween the No. 1 terminal and under-hood fuse/relay box 10P connector No.6 terminal:
There should be continuity. 
  • An open in the wire