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Test E: Wash & Wipe Function Does Not Operate Properly

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  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below center of instrument panel, right of steering column. On manual transmission models, depress clutch pedal. Observe CTM/GEM PIDs IGN_A, IGN_S, IGN_OG/L and IGN_RD while turning ignition switch through all positions. If PID values agree with switch positions, go to next step. If PID values do not agree with switch positions, repair appropriate ignition switch circuit(s). See POWER DISTRIBUTION in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Clear DTCs and retest system.
  2. Using NGS tester, retrieve continuous DTCs stored in Central Timer Module/Generic Electronic Module (CTM/GEM). Clear DTCs. Perform ON-DEMAND SELF-TEST and note all DTCs. If no DTCs exist, go to next step. If any DTCs exist, go to appropriate test step. See TEST "E" DIAGNOSTIC TROUBLE CODE INDEX  table.
    TEST "E" DIAGNOSTIC TROUBLE CODE INDEX

    DTC Step No.
    B1342 (1)
    B1450  3
    B1453  3
    B1458  7
    B1460  7
    (1) Replace GEM/CTM, clear DTCs and retest system. See CENTRAL TIMER MODULE/GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION.
  3. Using NGS tester, observe PID WPMODE while turning wiper switch through all positions. If PID values do not agree with switch positions, go to next step. If PID values agree with switch positions, go to step  7.
  4. Turn ignition switch to LOCK position. Disconnect multifunction switch 7-pin harness connector C202b. Measure resistance between terminals No. 4 and 6 at multifunction switch harness connector C202b (component side) while depressing and releasing washer switch. See Fig 1. If resistance is 5 ohms or less with switch depressed and more than 10 k/ohms with switch released, go to next step. If resistance is not 5 ohms or less with switch depressed and more than 10 k/ohms with switch released, replace multifunction switch. See MULTIFUNCTION SWITCH  under REMOVAL & INSTALLATION. Clear DTCs and retest system.
  5. Disconnect CTM/GEM 26-pin harness connector C201a. CTM/GEM is located on back side of central junction box. Turn ignition switch to RUN position. Measure voltage between ground and multifunction switch harness connector C202b terminal No. 6 (Light Blue/Orange wire). If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Light Blue/Orange wire between CTM/GEM and multifunction switch. Clear DTCs and retest system. See WIRING DIAGRAMS .
  6. Turn ignition switch to LOCK position. Measure resistance in Light Blue/Orange wire between multifunction switch harness connector C202b terminal No. 6 and CTM/GEM harness connector C201a terminal No. 13. If resistance is 5 ohms or less, replace CTM/GEM. See CENTRAL TIMER MODULE/GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION. Clear DTCs and retest system. If resistance is more than 5 ohms, repair open in Light Blue/Orange wire between CTM/GEM and multifunction switch. Clear DTCs and retest system. See WIRING DIAGRAMS .
  7. Turn ignition switch to RUN position. Using NGS tester, observe PID WASHRLY while triggering active command WASHRLY. If PID WASHRLY agrees with command mode, go to next step. If PID WASHRLY does not agree with command mode, replace CTM/GEM. See CENTRAL TIMER MODULE/GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION. Clear DTCs and retest system.
  8. Turn ignition switch to LOCK position. Remove washer pump relay. Washer pump relay is located in battery junction box. Turn ignition switch to RUN position. Measure voltage between ground and washer pump relay socket terminal No. 3 (White/Black wire). If battery voltage exists, go to next step. If battery voltage does not exist, repair open in White/Black wire between washer pump relay and central junction box harness connector C270a. See WIRING DIAGRAMS . Clear DTCs and retest system.
  9. Turn ignition switch to LOCK position. Check washer pump relay. See RELAYS  under COMPONENT TESTS. If relay is okay, go to next step. If relay is defective, replace defective relay. Clear DTCs and retest system.
  10. Disconnect CTM/GEM 26-pin harness connector C201a. Measure resistance in Tan/Red wire between CTM/GEM harness connector C201a terminal No. 24 and washer pump relay socket terminal No. 2. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Tan/Red wire between CTM/GEM and washer pump relay. See WIRING DIAGRAMS . Clear DTCs and retest system.
  11. Turn ignition switch to RUN position. Measure voltage between ground and washer pump relay socket terminal No. 2 (Tan/Red wire). If voltage does not exist, go to next step. If voltage exists, repair short to voltage in Tan/Red wire between CTM/GEM and washer pump relay. Clear DTCs and retest system.
  12. Turn ignition switch to LOCK position. Disconnect washer pump harness connector C137. Measure resistance in Black/White wire between washer pump harness connector C137 and washer pump relay socket terminal No. 5. See Figure. If resistance is 5 ohms or less, reinstall washer pump relay and go to next step. If resistance is more than 5 ohms, repair open in Black/White wire between washer pump and washer pump relay. See WIRING DIAGRAMS . Clear DTCs and retest system.
  13. Measure resistance between ground and washer pump harness connector C137 Black wire terminal. If resistance is 5 ohms or less, replace washer pump. See WASHER PUMP & RESERVOIR  under REMOVAL & INSTALLATION. If resistance is more than 5 ohms, repair open in Black wire between washer pump and ground. Ground is located beside right radiator support. Clear DTCs and retest system.
Fig 1: Identifying Multifunction Switch C202a & C202b Terminals
G00188443Courtesy of FORD MOTOR CO.
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