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Test 104B - Wiper Switch Mode Sense Circuit

NOTE: Perform TEST 104B  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. Stop wiper motor actuation test. Using scan tool, read ON/OFF (intermittent) wiper sensor status. Observe scan tool while gradually moving wiper switch from off to high position. If scan tool displays more than INTRMT WIPE: 0V (zero volts), replace Body Control Module (BCM). If scan tool displays INTRMT WIPE: 0V (zero volts), go to next step.
  2. Disconnect multifunction switch connector. Connector is located on upper part of steering column, behind trim cover. Using scan tool in voltmeter mode, measure voltage at terminal No. 3 (Dark Blue wire) on multifunction switch connector. If voltage is less than 10 volts, repair open Dark Blue wire between switch and fuse No. 10. If voltage is more than 10 volts, go to next step.
  3. Disconnect BCM Bone connector. BCM is located behind right kick panel. Using scan tool in ohmmeter mode, measure resistance at terminal No. 16 (Dark Green/Red wire) of BCM Bone connector. If resistance is less than 5 ohms, repair short to ground in Dark Green/Red wire. If resistance is 5 ohms or greater, go to next step.
  4. Using an external ohmmeter, measure resistance between terminal No. 1 (Dark Green/Red wire) on switch connector and terminal No. 16 on BCM Bone connector. If resistance is 5 ohms or greater, repair open Dark Green/Red wire between multifunction switch and BCM. If resistance is less than 5 ohms, go to next step.
  5. Reconnect multifunction switch connector. Turn wiper switch to low or high position. Using scan tool in voltmeter mode, backprobe terminal No. 16 (Dark Green/Red wire) on multifunction switch connector. If voltage is 10 volts or less, replace multifunction switch. If voltage is more than 10 volts, replace BCM.
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