Special tool
 | Digital multimeter 105-R0051 or equivalent |
 | Electrical 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 |
|
• Brush (And) wiper • Wiper arm shaft • Windshield washer reservoir • Hose (And) • Windshield washer jets |
• Fuse (And) • Electrical connector (s) • Wiring harness • Pump (s) windshield washer • Electric motor (And) wiper. |
3. If an obvious cause for a noted or received complaint is found, eliminate that cause (if possible) before moving on to the next step.
4. If the cause of the complaint is not obvious, check the symptom and refer to the Troubleshooting Table.
Trouble symptom table
|
State |
Possible Causes |
Action |
|
• No communication with common electronic module (GEM) |
•Data bus (ISO 9141) •Common electronic module (GEM) |
• For more information, see Section 418-00. |
|
• Windshield wipers not working |
•Fuse •Chain (And) • Rear window wiper relay •Wiper/washer switch •Windshield wiper motor • Rear window wiper motor •Common electronic module (GEM) • Central connection box (CJB). |
• Go to PINPOINT TEST K |
|
• Windshield wipers work continuously |
•Chain (And) • Windshield wiper relay. • Rear window wiper relay •Wiper/washer switch •Windshield wiper motor • Rear window wiper motor •Common electronic module (GEM) • Central connection box (CJB). |
• Go to PINPOINT TEST L |
|
• The low speed/high speed wipers are not working properly (wiper intermittent operation is working properly) |
•Chain (And) • Windshield wiper relay. •Wiper/washer switch •Windshield wiper motor |
• Go to PINPOINT TEST M |
|
• The intermittent wiper function is not working properly (low speed/high speed wipers function properly) |
•Chain (And) • Windshield wiper relay. •Wiper/washer switch •Common electronic module (GEM) • Central connection box (CJB) |
• Go to PINPOINT TEST N |
|
• The function of washing and cleaning glasses does not work |
•Chain (And) •Wiper/washer switch •Common electronic module (GEM) |
• Go to PINPOINT TEST O |
|
•Wipers do not stop in correct idle position |
•Chain (And) • Windshield wiper relay. •Wiper/washer switch •Windshield wiper motor • Rear wiper motor • Central connection box (CJB) |
• Go to PINPOINT TEST P |
|
• Windshield washer pump does not work |
•Chain (And) • Windshield washer pump motor •Wiper/washer switch |
• Go to PINPOINT TEST Q |
|
• The windshield washer fluid low level warning light is not working properly |
•Chain (And) • The relay of a low level of working liquid of a windshield washer •Common electronic module (GEM) |
• For more information, see Section 419-10. |
|
•Headlight washer does not work properly |
•Fuse •Chain (And) •Headlight washer relay •Headlight washer pump motor •Battery connection box (BJB) |
• Go to PINPOINT TEST R |
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