Electric seat adjustment (ESA) diagnosis troubleshooting - AD91.29-P-5001LK
MODEL 170 with CODE (221b) Electrically adjustable driver and passenger seat
| Risk of injury by trapping or crushing , in extreme cases with loss of limbs when working with the mechanism | When moving components, no body parts or limbs should be within the movement range of the mechanism | AS00.00-Z-0009-01A | |
| Electric seat adjustment (ESA) diagnosis, previous knowledge | AD91.29-P-2001LK | ||
| Troubleshooting | |||
| Complaint | Possible cause | Notes | Remedy / test step |
| Front passenger seat and driver's seat adjustment completely inoperative | Cables to CF relay module (K24), CF relay module | ||
| AD91.29-P-6002-31LK | |||
| Convenience feature via terminal 15R inoperative | Cable from X4/18 to K24 | ||
| CF relay module (K24) | AD91.29-P-6002-31LK | ||
| Convenience feature via doors inoperative | Left and right front door contact switch (S17/3, S17/4), | ||
| Cables from S17/3, S17/4 to K24, | AD91.29-P-6002-32LK | ||
| CF relay module | AD91.29-P-6002-31LK | ||
| Driver's seat adjustment completely inoperative | Fuse, Voltage supply to switch Seat adjustment, Cable from CF relay module (K24) to seat |
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| Left front seat adjustment switch (S22) | AD91.29-P-6002-55LK | ||
| Front passenger seat adjustment completely inoperative | Fuse, Cable from CF relay module (K24) to seat |
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| Right front seat adjustment switch (S23) | AD91.29-P-6002-55LK | ||
| Driver's seat fore/aft adjustment faulty | Voltage supply to forward/back motor (M25m1) | ||
| Left front seat adjustment switch (S22) | AD91.29-P-6002-02LK | ||
| Forward/back motor (M25m1) | AD91.29-P-6002-03LK | ||
| Front passenger seat fore/aft adjustment faulty | Voltage supply to forward/back motor (M26m1) | ||
| Right front seat adjustment switch (S23) | AD91.29-P-6002-17LK | ||
| Forward/back motor (M26m1) | AD91.29-P-6002-18LK | ||
| Driver's seat height adjustment faulty | Voltage supply to front up/down motor (M25m3) | ||
| Left front seat adjustment switch (S22) | AD91.29-P-6002-04LK | ||
| Front up/down motor (M25m3) | AD91.29-P-6002-05LK | ||
| Front passenger seat height adjustment faulty | Voltage supply to front up/down motor (M26m3) | ||
| Right front seat adjustment switch (S23) | AD91.29-P-6002-19LK | ||
| Front up/down motor (M26m3) | AD91.29-P-6002-20LK | ||
| Driver's seat height adjustment faulty | Voltage supply to rear up/down motor (M25m2) | ||
| Left front seat adjustment switch (S22) | AD91.29-P-6002-06LK | ||
| Rear up/down motor (M25m2) | AD91.29-P-6002-07LK | ||
| Front passenger seat height adjustment faulty | Voltage supply to rear up/down motor (M26m2) | ||
| Right front seat adjustment switch (S23) | AD91.29-P-6002-21LK | ||
| Rear up/down motor (M26m2) | AD91.29-P-6002-22LK | ||
| Driver's seat backrest fore/aft adjustment faulty | Voltage supply to backrest forward/back motor (M25m5) | AD91.29-P-6002-08LK | |
| Left front seat adjustment switch (S22) Backrest forward/back motor (M25m5) |
AD91.29-P-6002-09LK | ||
| Front passenger seat backrest fore/aft adjustment faulty | Voltage supply to backrest forward/back motor (M26m5) | AD91.29-P-6002-23LK | |
| Right front seat adjustment switch (S23) Backrest forward/back motor (M26m5) |
AD91.29-P-6002-24LK |