Special tool
 | Digital Multimeter 105-R0051 or equivalent |
 | Electric Probe Kit 29-011A |
Inspection and verification
1. Check the validity of the customer's complaint.
2. Visually inspect for obvious signs of mechanical or electrical damage.
Visual inspection table
|
Mechanical factors |
Electrical factors |
|
• Windscreen wiper blade(s) • Windscreen wiper arm shaft • Windscreen washer reservoir • Hose(s) • Windscreen washer nozzles |
• Fuse(s) • Electrical connector(s) • Wiring harness • Windscreen washer pump(s) • Windscreen wiper motor(s). |
3. If an obvious cause for the complaint noted or received is found, correct that cause (if possible) before moving on to the next step.
4. If the cause of the complaint is not obvious, clarify the symptom of the malfunction and refer to the Symptoms Table.
Table of signs of malfunctions
|
State |
Possible Causes |
Action |
|
•No communication with the General Electronic Module (GEM) |
•Data bus (ISO 9141) •General Electronic Module (GEM) |
•For additional information, see Section 418-00. |
|
•Windscreen wipers do not work |
•Fuse box •Chain(s) •Rear window wiper relay •Windscreen wiper/washer switch •Windshield wiper motor •Rear window wiper motor •General Electronic Module (GEM) •Central Junction Box (CJB). |
• Proceed to PINPOINT TEST K |
|
•Windscreen wipers operate continuously |
•Chain(s) •Windshield wiper relay. •Rear window wiper relay •Windscreen wiper/washer switch •Windshield wiper motor •Rear window wiper motor •General Electronic Module (GEM) •Central Junction Box (CJB). |
• Proceed to PINPOINT TEST L |
|
•Low/high speed wiper mode does not function properly (intermittent wiper mode functions properly) |
•Chain(s) •Windshield wiper relay. •Windscreen wiper/washer switch •Windshield wiper motor |
• Proceed to PINPOINT TEST M |
|
•Intermittent wiper mode does not function properly (low/high speed wiper mode functions properly) |
•Chain(s) •Windshield wiper relay. •Windscreen wiper/washer switch •General Electronic Module (GEM) •Central Junction Box (CJB) |
• Proceed to PINPOINT TEST N |
|
•The glass washing and cleaning function does not work |
•Chain(s) •Windscreen wiper/washer switch •General Electronic Module (GEM) |
• Proceed to PINPOINT TEST O |
|
•Windscreen wipers do not stop in the correct idle position |
•Chain(s) •Windshield wiper relay. •Windscreen wiper/washer switch •Windshield wiper motor • Rear window wiper motor • Central Junction Box (CJB) |
• Proceed to PINPOINT TEST P |
|
•The windshield washer pump does not work |
•Chain(s) •Windshield washer pump electric motor •Windscreen wiper/washer switch |
• Proceed to PINPOINT TEST Q |
|
•Low windshield washer fluid level indicator lamp is not working properly |
•Chain(s) •Low windshield washer fluid level relay •General Electronic Module (GEM) |
•For additional information, see Section 419-10. |
|
•Headlight washer does not function properly |
•Fuse box •Chain(s) •Headlight washer relay •Headlamp washer pump motor •Battery Junction Box (BJB) |
• Proceed to PINPOINT TEST R |
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