Test D: Front Wiper Wash & Wipe Function Inoperative Or Does Not Operate Correctly
- Turn ignition switch to RUN position. Operate multifunction switch to wash and wipe function and check for proper operation. If wipers and washers work properly, go to next step. If wipers and washers do not work properly, go to step 5
.
- Turn ignition switch to LOCK position. Disconnect washer pump harness connector C828. See Fig 1
. Turn ignition switch to RUN position. Turn multifunction switch to wash and wipe function and measure voltage between terminal No. 1 (White/Black wire) and terminal No. 2 (Yellow/Black wire) at washer pump harness connector C828. If battery voltage exists, replace washer pump and retest. See WINDSHIELD WASHER PUMP & RESERVOIR
under REMOVAL & INSTALLATION. If battery voltage does not exist, go to next step.
- Turn ignition switch to LOCK position. Disconnect multifunction switch harness connector C441. Measure resistance of White/Black wire between terminal No. 1 at washer pump harness connector C828 and terminal No. 2 at multifunction switch harness connector C441. If battery voltage exists, go to next step. If battery voltage does not exist, repair open or short to ground in White/Black wire between multifunction switch, splice S14, in-line connector C70 and washer pump. See COMPONENT LOCATIONS
.
- Measure resistance of Yellow/Black wire between terminal No. 2 at washer pump harness connector C828 and terminal No. 4 at multifunction switch harness connector C441. See Figure
and Fig 1
. If resistance is 2 ohms or less, replace multifunction switch. If resistance is more than 2 ohms, repair open in Yellow/Black wire between washer pump, in-line connector C70, central junction box and multifunction switch.
- Operate multifunction switch to intermittent wipe function and check for proper operation. If wipers work properly, go to next step. If wipers do not work properly, run CTM self test. See
MODULE COMMUNICATIONS NETWORK - FOCUS article.
- Turn ignition switch to LOCK position. Remove CTM. Turn ignition switch to RUN position. Operate multifunction switch to wash and wipe function and measure voltage between terminal No. 27 and 29 at CTM socket C1000. See Figure
. If battery voltage exists, replace CTM and retest. If battery voltage does not exist, go to next step.
- Turn ignition switch to LOCK position. Disconnect CJB harness connector C14. See Figure
. Measure resistance between terminal No. 27 at CTM harness connector C1000 and terminal No. 6 at CJB connector C14 (component side). If resistance is 2 ohms or less, go to next step. If resistance is more than 2 ohms, replace CJB and retest.
- Measure resistance between terminal No. 29 at CTM socket C1000 and terminal No. 1 at CJB harness connector C14. If resistance is 2 ohms or less, repair open in White/Black wire between CJB, splice S14 and multifunction switch. If resistance is more than 2 ohms, replace CJB and retest.
Courtesy of FORD MOTOR CO.