Wiper System & Washer System: Other Dodge Cab & Chassis R2500

WIPER BLADES

With wiper arms removed, cycle wiper motor into PARK position. Mount arms on pivot shafts, and ensure distances are as specified. (Scheme 2) Operate wiper blades, and ensure they return to proper position. If wiper blades do not return to this position, check linkage and pivot assembly for wear and binding.

Scheme 2

Motor Will Not Run

Check for blown fuse. Check voltage at motor. Check wiper switch, ground circuit and wiring.

Motor Runs, Blades Do Not Move

Check for loose motor crank, disconnected linkage or loose arms on pivot shaft. Check for faulty wiper motor.

Blades Do Not Park Properly

Check for improperly installed wiper arms. Check for faulty linkage. Check for faulty wiring, wiper switch or wiper motor.

Blades Chatter

Check for foreign substance on blades or glass. Check for twisted arm holding blade at wrong angle to glass. Check for bent or damaged blades.

Washers Inoperative

See WASHER INOPERATIVE under SYSTEM TESTS.

SYSTEM TESTS

Note. For testing and diagnostic procedures not listed, see WINDSHIELD WIPER SYSTEM in BODY CONTROL MODULES - RAM PICKUP article.

WASHER INOPERATIVE

Note. Following testing applies when pump does not operate. If pump operates, see WASHERS under TROUBLE SHOOTING.

1. Turn ignition switch to ON position. Turn wiper switch to ON position. If wipers operate, go to next step. If wipers do not operate, diagnose wiper problem first. See «WIPER INOPERATIVE»(ref-62832-S12796109632001011800000) .
2. Turn wiper switch to OFF position. Depress washer switch. Washer pump and wipers should operate while switch is depressed. Wipers should operate about 3 sweeps after switch is released. If wipers are okay but washer is not, go to next step. If washer is okay but wipers are not, go to step 5 .
3. Turn ignition switch to OFF position. Disconnect negative battery cable. Disconnect washer pump harness connector. Check for continuity between ground and washer pump ground circuit at harness connector. See «WIRING DIAGRAMS»(ref-62832-S12484304872001011800000) . If continuity does not exist, repair open in ground circuit. If continuity does exist, go to next step.
4. Connect negative battery cable. Turn ignition switch to ON position. While depressing washer switch, check for battery voltage on multifunction switch feed circuit at washer pump connector. See «WIRING DIAGRAMS»(ref-62832-S12484304872001011800000) . If battery voltage exists, replace pump. If battery voltage does not exist, repair open in feed circuit.
5. Turn ignition switch to OFF position. Disconnect negative battery cable. Disconnect CTM harness connector. Connect negative battery cable. Turn ignition switch to ON position. With washer switch depressed, check for battery voltage on multifunction switch feed circuit at CTM harness connector. See «WIRING DIAGRAMS»(ref-62832-S12484304872001011800000) . If battery voltage exists, check intermittent relay. See «INTERMITTENT WIPER RELAY»(ref-62832-S15701396202001011800000) under COMPONENT TESTS. If battery voltage does not exist, repair open in multifunction switch feed circuit.

Scheme 3

WIPERS INOPERATIVE

Note. For highline models, see appropriate WINDSHIELD WIPER SYSTEM in BODY CONTROL MODULES - RAM PICKUP article.

1. Check fuse No. 6 (25-amp) in junction block. If fuse is blown, replace fuse and repair short as necessary. If fuse is okay, go to next step.
2. Turn ignition switch to ON position. Check for battery voltage at fuse. If battery voltage does not exist, repair open circuit between fuse and ignition switch as necessary. If battery voltage exists, go to next step.
3. Turn ignition switch to OFF position. Disconnect negative battery cable. Disconnect multifunction switch harness connector. Connect negative battery cable. Turn ignition switch to ON position. Check for battery voltage at multifunction switch harness connector terminal No. 4 (Dark Blue wire). (Scheme 5) If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Dark Blue wire between fuse and multifunction switch.
4. If problem is intermittent wipe feature only, go to next step. If problem is with all wiper modes or only HI and/or LO speed modes, go to step 7.
5. Turn ignition switch to OFF position. Disconnect negative battery cable. Disconnect CTM harness connector. Check continuity between multifunction switch harness connector terminal No. 1 (White/Dark Blue wire) and CTM harness connector terminal No. 12 (White/Dark Blue wire). (Scheme 3) If continuity does not exist, repair open in White/Dark Blue wire. If continuity exists, go to next step.
6. Check continuity of Violet wire between multifunction switch harness connector terminal No. 2 and CTM harness connector terminal No. 3. If continuity does not exist, repair open in Violet wire. If continuity exists, check intermittent relay. See «INTERMITTENT WIPER RELAY»(ref-62832-S15701396202001011800000) under COMPONENT TESTS.
7. Check continuity of Brown/White wire between multifunction switch harness connector terminals No. 6 and 9. If continuity does not exist, repair open in Brown/White wire. If continuity exists, go to next step.
8. Check multifunction (wiper/washer) switch. See «WIPER/WASHER SWITCH»(ref-62832-S32261014952001011800000) under COMPONENT TESTS. If switch tests okay, connect switch and go to next step. If switch does not test okay, replace multifunction switch.
9. Turn ignition switch to OFF position. Disconnect negative battery cable. Access wiper motor harness connector. Check resistance between wiper motor harness connector Black wire terminal and ground. If resistance is more than zero ohms, repair open in Black wire. If resistance is zero ohms, go to next step.
10. Connect negative battery cable. Turn ignition switch to ON position. Check voltage by backprobing at wiper motor harness connector terminals listed with multifunction switch in appropriate position. See «SWITCH POSITION VOLTAGE TEST»(ref-62832-S27712137452001011800000) table. If battery voltage exists at each terminal, go to next step. If battery voltage does not exist at any terminal, repair open in appropriate wire.
11. Check voltage by backprobing wiper motor connector terminal No. 2 (Dark Green wire) with multifunction switch in LO or HI position, then move switch to OFF position. Voltage should vary between battery voltage and zero volts while wiper motor is cycling. Battery voltage should be present when switch is turned off, and zero volts when wipers return to park position. If voltage is not as specified, replace wiper motor.

SWITCH POSITION VOLTAGE TEST

Scheme 4

INTERMITTENT WIPER RELAY

1. Remove relay. See «INTERMITTENT WIPER RELAY»(ref-62832-S23229188442001011800000) under REMOVAL & INSTALLATION. Check continuity between relay terminals No. 30 and 87A. Continuity should exist. Check continuity between relay terminals No. 30 and 87. Continuity should not exist. Check resistance between relay terminals No. 85 and 86. Resistance should be 70-80 ohms.
2. Connect battery voltage to terminal No. 85 and ground to terminal No. 86. Check continuity between relay terminals No. 30 and 87A. Continuity should not exist. Check continuity between relay terminals No. 30 and 87. Continuity should exist. Replace relay if continuity or resistance is not as specified.

WIPER/WASHER SWITCH

Note. Wiper/washer switch is part of multifunction steering column switch. If wiper/washer switch fails, entire multifunction switch must be replaced.

Disconnect wiper/washer switch connector. Check continuity between appropriate switch terminals with switch in specified position. See WIPER/WASHER SWITCH CONTINUITY TEST table. (Scheme 5) Replace multifunction switch if continuity is not as specified.

WIPER/WASHER SWITCH CONTINUITY TEST

Scheme 5

CENTRAL TIMER MODULE

Note. When installing new high line Central Timer Module (CTM), use scan tool to determine customer preferred settings before replacement. Settings must be enabled/disabled using scan tool.

WIPER MOTOR

Note. Wiper linkage and motor module is replaced as a unit.