Wiper/Washer Switch (Combination Switch Control Unit) Input Test
NOTE:
before testing, troubleshoot the multiplex integrated control system first using b-can system diagnosis test mode a (see
Troubleshooting - B-Can System Diagnosis Test Mode A
).
- turn the ignition switch to lock (0).
- remove the driver's dashboard undercover (see Driver's Dashboard Lower Cover Removal/Installation ), and the driver's dashboard lower cover (see Driver's Dashboard Lower Cover Removal/Installation ).
- remove the steering column covers (see Steering Column Removal And Installation ).
- disconnect the 8p connector (a) from the wiper/washer switch (b).
- inspect the connector and socket terminals to be sure they are all making good contact.
- with the connector still disconnected, do 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, go to step 7.
test result referencecavity wire test condition test: desired result possible cause if desired result is not obtained 5 pnk under all conditions check for continuity between the terminal no. 5 and under-hood fuse/ relay box connector j (10p) terminal no. 5:
there should be continuity.an open in the wire disconnect under-hood fuse/relay box connector j (10p) check for continuity between the terminal no. 5 and body ground:
there should be no continuity.a short to ground in the wire 4 lt grn under all conditions check for continuity between the terminal no. 4 and driver's under-dash fuse/relay box connector n (45p) terminal no. 28:
there should be continuity.an open in the wire disconnect driver's under-dash fuse/relay box connector n (45p) check for continuity between the terminal no. 4 and body ground:
there should be no continuity.a short to ground in the wire 1 gry under all conditions check for continuity between the terminal no. 1 and under-hood fuse/ relay box connector j (10p) terminal no. 6:
there should be continuity.an open in the wire disconnect under-hood fuse/relay box connector j (10p) and driver's under-dash fuse/relay box connector p oop) check for continuity between the terminal no. 1 and body ground:
there should be no continuity.a short to ground in the wire - reconnect the 8p connector to the wiper/washer switch, and do 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).
test result referencecavity wire test condition test: desired result possible cause if desired result is not obtained 3 blk under all conditions measure the voltage to ground:
there should be less than 0.1 v.8 wht under all conditions measure the voltage to ground:
there should be battery voltage.7 pnk ignition switch on (ii) measure the voltage to ground:
there should be battery voltage.