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Test 105A - Wiper Motor High Speed Operation

NOTE: Perform TEST 103A  before proceeding with this test. For connector terminal ID, see CONNECTOR IDENTIFICATION  . For wiring schematics, see WIRING DIAGRAMS  in this article. Perform TEST VER-1 - VERIFICATION PROCEDURE  after each repair.
CAUTION: Always turn ignition off prior to disconnecting any module connector.
  1. Remove HI/LO wiper relay (relay No. 10) from Power Distribution Center (PDC). PDC is located on left front fender apron. See Figure . Using external voltmeter, measure voltage between ground and terminal "A" (Dark Blue wire) on HI/LO wiper relay socket. If voltage is 10 volts or less, repair open Dark Blue wire. If voltage is more than 10 volts, go to next step.
  2. Turn wipers on HI speed. Measure voltage between terminals "A" (Dark Blue wire) and "C" (Violet wire) on HI/LO wiper relay socket. If voltage is greater than 10 volts, go to next step. If voltage is 10 volts or less, go to step 5).
  3. Turn wipers on LO speed. Connect a jumper wire between terminals "B" (Light Green/Black wire) and "D" (Red/Yellow wire) on HI/LO wiper relay socket. If wipers operate in high speed mode, replace HI/LO relay. If wipers do not operate in high speed mode, go to next step.
  4. Leave jumper wire connected. Disconnect wiper motor connector. Connector is located on engine compartment firewall, just right of power brake booster. Using voltmeter, measure voltage between ground and terminal No. 2 (Red/Yellow wire) on wiper motor connector. If voltage is 10 volts or less, repair open Red/Yellow wire. If voltage is more than 10 volts, replace wiper motor.
  5. Install HI/LO relay. Gain access to Body Control Module (BCM). BCM is located behind right kick panel. Operate wipers in low speed mode. With BCM connectors connected, backprobe jumper wire between terminal No. 18 (Violet wire) on BCM Bone connector and ground. If wiper speed changes to high mode, go to next step. If wiper speed does not change, repair open Violet wire.
  6. Disconnect jumper wire. Move wiper switch to high speed mode. Using scan tool in voltmeter mode, backprobe terminal No. 16 (Dark Green/Red wire) on BCM Bone connector. If voltage is more than 8 volts, replace BCM. If voltage is 8 volts or less, replace multifunction switch.
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