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Test 104A - Wiper Switch, Controller & Power Supply

NOTE: For connector terminal identification and wiring diagrams, see BODY CONTROL COMPUTER  section in this article. Perform TEST VER-1  VERIFICATION TEST after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
  1. Using scan tool, actuate wiper motor low speed test. If wiper motor operates in low speed mode, go to TEST 104B  . If wiper motor does not operate in low speed mode, go to next step.
  2. Stop wiper motor low speed mode actuation test. Using scan tool, actuate wiper motor high speed test. If wiper motor operates in high speed mode, go to TEST 104B. If wiper motor does not operate in high speed mode, go to next step.
  3. Stop high speed mode actuation test. Access Power Distribution Center (PDC). PDC is located on left front fender apron. Inspect "E" cartridge fuse in PDC. See Figure . If fuse is blown, go to TEST 104C. If fuse is okay, go to next step.
  4. Remove "E" cartridge fuse from PDC. Using scan tool in voltmeter mode, check voltage on "E" cartridge fuse connector (Black wire). If voltage is less than 10 volts, repair open Black wire between "E" cartridge fuse and battery positive terminal. If voltage is more than 10 volts, go to next step.
  5. Install "E" cartridge fuse. Remove intermittent wiper relay (relay No. 6) from PDC. Using scan tool in voltmeter mode, check voltage on intermittent wiper relay connector terminal "D" (Red/Dark Blue wire). If voltage is 10 volts or less, repair open Red/Dark Blue wire between "E" cartridge fuse and on/off wiper relay. If voltage is more than 10 volts, go to next step.
  6. Connect a jumper wire between on/off wiper relay connector terminals "B" (Light Green/Black wire) and "D" (Red/Dark Blue wire). If wiper motor operates, go to TEST 104D  . If wiper motor does not operate, go to next step.
  7. Remove high/low wiper relay (relay No. 10) from PDC. Ensure jumper wire is still connected between on/off wiper relay connector terminals "B" (Light Green/Black wire) and "D" (Red/Dark Blue wire). Using scan tool in voltmeter mode, check voltage on high/low wiper relay connector terminal "B" (Light Green/Black wire). If voltage is 10 volts or less, repair open Light Green/Black wire between intermittent wiper relay and high/low wiper relay. If voltage is more than 10 volts, go to next step.
  8. Remove jumper wire from intermittent wiper relay terminals. Connect jumper wire between intermittent wiper relay connector terminal "D" (Red/Yellow wire) and high/low wiper relay connector terminal "E" (Brown/White wire). If wiper motor does not operate in low speed mode, go to TEST 104E. If wiper motor operates in low speed mode, replace high/low wiper relay.
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