Pinpoint Test B: The Wipers Stay On Continuously
WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- B1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCs)
- Retrieve and document continuous DTCs.
- Enter the following diagnostic mode on the diagnostic tool: Clear Continuous DTCs.
- Enter the following diagnostic mode on the diagnostic tool: SJB Wiper/Washer Self-Test.
- Are DTCs present?
- Yes
: If DTC B1431, GO to B2.
If DTC B1446, GO to B3.
If DTC B2179, B2180, B2181 or B2183, GO to B6.
- No : CARRY OUT the run/park relay component test. Refer to the appropriate SYSTEM WIRING DIAGRAMS for component testing. If the relay tests OK, GO to B7.
- B2 CHECK CIRCUIT 646 (YE/WH) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: Wiper Run/Park Relay.
- Disconnect: SJB C2280a.
- Measure the resistance between ground and wiper run/park relay pin 2, circuit 646 (YE/WH).
- Is the resistance greater than 10,000 ohms?
- Yes : GO to B8.
- No : REPAIR circuit 646 (YE/WH) for a short to ground. TEST the system for normal operation.
- B3 CHECK CIRCUIT 671 (LB) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Disconnect: SJB C2280a.
- Disconnect: Wiper Motor C125.
- Key in ON position.
- Measure the voltage between ground and wiper motor C125-5, circuit 671 (LB).
- Is voltage present?
- Yes : REPAIR circuit 671 (LB) for a short to voltage. TEST the system for normal operation.
- No : GO to B4.
- B4 CHECK CIRCUIT 28 (BK/PK) FOR VOLTAGE
- Key in OFF position.
- Disconnect: Wiper Run/Park Relay.
- Key in ON position.
- Measure the voltage between ground and wiper run/park relay pin 3, circuit 28 (BK/PK).
- Is voltage present?
- Yes : GO to B5.
- No : GO to B8.
- B5 CHECK CIRCUIT 28 (BK/PK) FOR A SHORT TO VOLTAGE
- Key in OFF position.
- Disconnect: Wiper High/Low Relay.
- Key in ON position.
- Measure the voltage between ground and wiper run/park relay pin 3, circuit 28 (BK/PK).
- Is voltage present?
- Yes : REPAIR circuit 28 (BK/PK) for a short to voltage. TEST the system for normal operation.
- No : REPAIR circuit 58 (WH) for a short to voltage. TEST the system for normal operation.
- B6 CHECK CIRCUITS 61 (YE/RD), 63 (RD), 65 (DG) AND 680 (LB/OG) FOR A SHORT TO GROUND
- Key in OFF position.
- Disconnect: SJB C2280d.
- Disconnect: Multi-function Switch C202a.
- Measure the resistance between ground and multi-function switch:
- (DTC B2179) C202a-1, circuit 61 (YE/RD).
- (DTC B2180) C202a-2, circuit 65 (DG).
- (DTC B2181) C202a-3, circuit 63 (RD).
- (DTC B2183) C202a-4, circuit 680 (LB/OG).
- Is the resistance greater than 10,000 ohms?
- Yes : CARRY OUT the multi-function switch component test. Refer to the appropriate SYSTEM WIRING DIAGRAMS for component testing. If the switch tests OK, GO to B8.
- No : REPAIR circuit 61 (YE/RD), 63 (RD), 65 (DG) or 680 (LB/OG) for a short to ground. TEST the system for normal operation.
- B7 CHECK CIRCUIT 56 (DB/OG) FOR A SHORT TO POWER
- Key in OFF position.
- Disconnect: Wiper High/Low Relay.
- Disconnect: Wiper Motor C125.
- Key in ON position.
- Measure the voltage between ground and wiper high/low relay pin 5, circuit 56 (DB/OG).
- Is voltage present?
- Yes : REPAIR circuit 56 (DB/OG) for a short to voltage. TEST the system for normal operation.
- No : GO to B8.
- B8 CHECK FOR CORRECT SJB OPERATION
- Disconnect all SJB connectors.
- Check for:
- Corrosion.
- Pushed-out pins.
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes
: INSTALL a new SJB. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES
.
CLEAR the DTCs, REPEAT the self-test.
- No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.