Intermittent Front Wiper Does Not Operate: I30

If using Nissan's CONSULT scan tool, go to next step. If not using scan tool, go to step 7.
Turn ignition switch to LOCK position. Connect scan tool to Data Link Connector (DLC). See Fig 1. Turn ignition switch to RUN position. Touch START, IVMS, then WIPER on scan tool display. Touch DATA MONITOR on scan tool display. Select INT SW on scan tool. When wiper switch is in INT position, scan tool should display INT SW ON. When wiper switch is in OFF position, scan tool should display INT SW OFF. If scan tool display is as specified, go to next step. If scan tool display is not as specified, check the following and repair as necessary:
- Test wiper switch. See STEERING COLUMN SWITCHES article.
- Check for open in wiper switch ground circuit. See WIRING DIAGRAMS .
- Check for open and/or shorts between Body Control Module (BCM) and wiper switch. See WIRING DIAGRAMS .
Fig 1: Locating Data Link Connector (I30 Is Shown; G20 & QX4 Are Similar)
Courtesy of NISSAN MOTOR CO., U.S.A.
Using scan tool, access IGN ACC SW in DATA MONITOR mode. Check IGN ACC SW status with ignition switch in LOCK, ACC and RUN positions. When ignition switch is in ACC and RUN positions, scan tool should display IGN ACC SW ON. When ignition switch is in LOCK position, scan tool should display IGN ACC SW OFF. If scan tool display is as specified, go to next step. If scan tool display is not as specified, check the following and repair as necessary:
- Check fuse No. 19 (7.5-amp) in instrument panel fuse box.
- Check for open and/or shorts between Body Control Module (BCM) and instrument panel fuse box. See WIRING DIAGRAMS .
Using scan tool, access WIPER AMP in ACTIVE TEST mode. Follow procedure displayed on scan tool display. Wiper motor should operate. If wiper motor operates, replace BCM. If wiper motor does not operate, go to next step.
Test wiper relay. See WIPER RELAY under COMPONENT TESTS. If wiper relay is okay, go to next step. If wiper relay is defective, replace wiper relay.
Turn ignition switch to ACC position. Using a voltmeter, backprobe terminal No. 9 (Pink/Black wire) at BCM harness connector M92. See Fig 2. With wiper switch in OFF position, battery voltage should exist. With wiper switch in INT position, voltage should pulse between zero and 12 volts every 2-21 seconds (depending on intermittent wiper setting). If voltage is not as specified, replace BCM. If voltage is as specified, check the following and repair as necessary:
- Check fuse No. 20 (20-amp) in instrument panel fuse box.
- Check for open and/or short in Light Green wire between instrument panel fuse box and wiper relay. See WIRING DIAGRAMS .
- Check for open and/or shorts between Body Control Module (BCM) and wiper relay. See WIRING DIAGRAMS .
Perform on-board diagnostics using mode II diagnostics. See MODE II (SWITCH SIGNAL MONITOR) under SELF-DIAGNOSTIC SYSTEM in appropriate MULTIPLEX CONTROL SYSTEMS article. If on-board diagnostics indicate wiper intermittent switch is functioning, go to next step. If on-board diagnostics do not indicate intermittent wiper switch is functioning, check the following and repair as necessary:
- Test wiper switch. See STEERING COLUMN SWITCHES article.
- Check for open in front wiper switch ground circuit. See WIRING DIAGRAMS .
- Check for open and/or shorts between Body Control Module (BCM) and wiper switch. See WIRING DIAGRAMS .
Using a voltmeter, backprobe terminal No. 25 (Pink/Black wire) at BCM harness connector M92. Battery voltage should only exist when ignition switch is in RUN or ACC positions. If voltage is as specified, go to step 5. If voltage is not as specified, check the following and repair as necessary:
- Check fuse No. 19 (7.5-amp) in instrument panel fuse box.
- Check for open and/or shorts between Body Control Module (BCM) and instrument panel fuse box. See WIRING DIAGRAMS .

Fig 2: Identifying I30 Body Control Module Harness Connector Terminals (As Viewed From Harness Side)

Courtesy of NISSAN MOTOR CO., U.S.A.