Test 105A - Wiper Motor High Speed Operation
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For wiring diagrams, see appropriate article in ENGINE PERFORMANCE:
- WIRING DIAGRAMS - 3.3L
- WIRING DIAGRAMS - 3.5L
- Perform TEST VER-1 after each repair.CAUTION: Always turn ignition off prior to disconnecting any module connector.
- Gain access to Body Control Module (BCM). BCM is located behind right kick panel. Operate wipers in low speed mode. With BCM connectors connected, connect a jumper wire between BCM Bone connector terminal No. 18 (Violet wire) and chassis ground. If wiper speed changes to high mode, go to step 3). If wiper speed does not change, go to next step.
- Disconnect jumper wire. Move wiper switch to high speed mode. Using scan tool in voltmeter mode, backprobe BCM Bone connector terminal No. 16 (Dark Green/Red wire). If voltage is more than 8 volts, replace BCM. If voltage is less than 8 volts, replace multifunction switch.
- Disconnect jumper wire. Remove high/low wiper relay (relay No. 10) from Power Distribution Center (PDC). PDC is located on left front fender apron. See Figure . Go to next step.
- Using scan tool 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. If voltage is more than 10 volts, go to next step.
- Disconnect scan tool probe. Connect a jumper wire between high/low wiper relay connector terminals "B" (Light Green/Black wire) and "D" (Red/Yellow wire). If wipers operate in high speed mode, go to step 8). If wipers do not operate in high speed mode, go to next step.
- Leave jumper wire connected. Disconnect wiper motor connector. Connector is located on engine compartment firewall, just right of power brake booster. Go to next step.
- Using scan tool 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. If voltage is more than 10 volts, replace wiper motor. 8) Turn ignition off. Disconnect jumper wire. With BCM connectors connected, connect jumper wire between BCM connector terminal No. 18 (Violet wire) and chassis ground. Using an external ohmmeter, check resistance between high/low wiper relay connector terminal "C" (Violet wire) and chassis ground. If resistance is less than 5 ohms, replace high/low wiper relay. If resistance is more than 5 ohms, repair open Violet wire.