Pinpoint Test C: Wiper System Faults - Circuit And Electrical Checks
WARNING: This page is about a different car, the 2018 Jaguar XE and 2017 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
- C1: CHECK FOR WIPER PARK SIGNAL CIRCUIT ISSUES
- Check if the wiper motor fault is related to a fault with the wiper park signal circuit
During the functional/enhanced tests, do the wipers initially operate normally and then stop working after 6 seconds?
- Yes : Check the wiper park signal circuit GO to C2 .
- No : Check the wiper motor connector GO to C3.
- C2: WIPER PARK SIGNAL CIRCUIT CHECKS
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the signals from the front wiper park switch circuit (input to body control module pin C3BP01HD-19). The signal should toggle between ground (when the wipers are in the park position) and a value between 11-14 volts (when the wipers are in any other position)
Is the wiper park signal present and behaving as expected?
- Yes : Consult the symptom chart below and perform any appropriate corrective actions. If the fault returns, contact the JLR Service Helpdesk
- No : Check the wiper motor connector GO to C3 .
- C3: WIPER MOTOR CONNECTOR CHECKS
- Uncouple the connector to the wiper motor assembly and check for corroded or poorly positioned pins
Is there any evidence of damaged, bent or corroded pins?
- Yes : Rectify as required. Re-couple the connector and perform wiper motor functional tests GO to Pinpoint Test B .
- No : Check the wiper motor power supply and ground circuits GO to C4 .
- C4: WIPER MOTOR POWER SUPPLY AND GROUND CIRCUIT CHECKS
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the wiper motor ground circuit for open circuit, high resistance (resistance should be less than 0.05 ohms
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the wiper motor slow wipe power supply circuit (between the wiper motor assembly pins 2 and 4) for short circuits or open circuit, high resistance
- Refer to the appropriate SYSTEM WIRING DIAGRAMS information and check the wiper motor fast wipe power supply circuit (between the wiper motor assembly pins 1 and 4) for short circuits or open circuit, high resistance
Are the wiper motor power and ground circuits intact and operating as expected?
- Yes : Replace the wiper motor assembly
- No : Repair circuit(s) as required and retest. If the fault persists, contact the JLR Service Helpdesk