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Test 31A - Wiper Motor High Speed Operation

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS  . Perform TEST VER-1 after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector.
  1. Turn ignition switch to OFF position. Turn wiper switch off. Ensure all doors are closed and courtesy lamps are off. Wait one minute. Gain access to Body Control Module (BCM). BCM is located behind right kick panel. Go to next step.
  2. Using DRB in ohmmeter mode, backprobe BCM Bone connector terminal No. 16 (Dark Green/Red wire). If resistance is not 1100-1400 ohms, go to TEST 33E  . If resistance is 1100-1400 ohms, go to next step.
  3. Turn ignition switch to ON position. If wipers operate at one speed continuously without stopping in park regardless of switch position, go to TEST 31B. If wipers do not operate at one speed continuously without stopping in park regardless of switch position, go to next step.
  4. Using DRB, actuate wiper motor low speed then high speed. If wiper motor actuates in both tests at same speed, go to TEST 32B  . If wiper motor does not actuate in both tests at same speed, go to next step.
  5. Stop actuation test. Turn ignition switch to OFF position. Disconnect multifunction switch connector. Connector is located on upper part of steering column, behind trim cover. Turn ignition switch to ON position. Go to next step.
  6. Connect jumper wire between multifunction switch terminals No. 1 (Dark Green/Red wire) and No. 3 (Dark Blue wire). If wipers operate properly in high speed mode, replace multifunction switch. If wipers do not operate properly in high speed mode, go to next step.
  7. Remove jumper wire and reconnect multifunction switch. With wiper switch still in HIGH speed mode, check if wipers are operating in LOW speed mode. If wipers are not operating in low speed mode, replace BCM. If wipers are operating in low speed mode, go to next step.
  8. Ensure BCM connectors are connected. Using DRB in voltmeter mode, backprobe BCM connector terminal No. 18 (Violet wire). If voltage is less than 10 volts, go to step 10). If voltage is more than 10 volts, go to next step.
  9. Disconnect BCM Bone connector. If voltage is more than 10 volts, repair short to voltage in Violet wire. If voltage is less than 10 volts, replace BCM.
  10. Remove high/low wiper relay (relay No. 10) from Power Distribution Center (PDC). PDC is located on left front fender apron. See Figure . Using DRB in voltmeter mode, check voltage on high/low wiper relay connector terminal "C" (Violet wire). If voltage is less than 0.2 volt, repair open Violet wire between relay and BCM. If voltage is more than 0.2 volt, go to next step.
  11. Using DRB in voltmeter mode, check voltage on high/low wiper relay connector terminal "A" (Dark Blue wire). If voltage is less than 10 volts, repair open Dark Blue wire between relay and fuse No. 10 on junction block. If voltage is more than 10 volts, go to next step.
  12. Disconnect wiper motor connector. Connector is located on engine compartment firewall, just right of power brake booster. Connect jumper wire between high/low wiper relay connector terminals "B" (Light Green/Black wire) and "D" (Red/Yellow wire). Using DRB in voltmeter mode, check voltage on wiper motor connector terminal No. 2 (Red/Yellow wire). If voltage is less than 10 volts, repair open Red/Yellow wire between high/low wiper relay and wiper motor. If voltage is more than 10 volts, replace wiper motor.
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