Test plan for the front seat height adjustment
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In the case of the complaint "seat height adjustment does not function", proceed according to test plan. As the seat functions vary, the test plan complies with the seat version with seat memory adjustment. Work aids: Use wiring diagram and multimeter. See TOOLS .
TEST PLAN FOR FRONT SEAT HEIGHT ADJUSTMENT
| Work instruction | Correct result | Incorrect result | |
|---|---|---|---|
| 1 | Actuate switch on seat for seat height adjustment, observe end position. | Switch in control module is audible Step 3 | Step 2 |
| 2 | Check fuse in the fuse box for the seat height adjustment. | Step 3 | Replace fuse and perform function test -> End |
| 3 | Measure the battery voltage on plug X 16/X 17 without memory or terminals 30 and 31 on the memory SG (see wiring diagram) using a multimeter. | > 11V Step 4 If a function is not audible under step 1, replace the control module memory. |
Check plug connection and wiring -> End |
| 4 | Measure the voltage on the inserted plug for the seat height adjustment (on control module memory or below the seat-without memory) using a multimeter. Actuate the seat height adjuster switch with probe tip + on RE and with probe tip - on BK. | > 4 V, when switching from front - back, the voltage switches from + to - Step 5 | Replace switch ->End |
| 5 | Remove motor and check input shaft. | Remove faulty part ->End |
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