Repair manual GRAMMER seat suspension MSG95EAC – November 2012
Material no. 1 277 338
2.3 Troubleshooting – Locating the fault
Page 13 of 15
Step
no.
Inspect/operate Result/Specified status Troubleshooting
5.6
• Bridge the pins P5 and P4 in the plug of the cable harness for
seat suspension (STCB I) (assignment for height adjustment,
UP signal).
• Measure the resistance at the contacts K11 and K17 in the
socket of the cable harness of the seat suspension (STCB C):
K11 (ground) Ω K17 (signal)
< 1 Ω (R →
→→
→ 0) (pass)
Proceed with inspection step no. 5.7.
>> 1 Ω (R → ∞) (cable break)
Replace the cable harness of the seat
suspension (see Chapter 3.16).
5.7
• Bridge the pins P5 and P6 in the plug of the cable harness for
seat suspension (STCB I) (assignment for height adjustment,
DOWN signal).
• Measure the resistance at the contacts K11 and K17 in the
socket of the cable harness of the seat suspension (STCB C):
K11 (ground) Ω K18 (signal)
< 1 Ω (R →
→→
→ 0) (pass)
Proceed with inspection step no. 5.8.
>> 1 Ω (R → ∞) (cable break)
Replace the cable harness of the seat
suspension (see Chapter 3.16).
5.8
• Measure resistance between pins P1, P1, P2 and P3 in the
cable harness plug for the seat suspension (STVB I) and the
contacts K15, K11 and K16 in the cable harness socket for the
seat suspension (STVB C) (pin assignment for operating mode
switch and seat occupancy detection system):
P1 Ω P15
P2 Ω P11
P3 Ω P16
< 1 Ω (R →
→→
→ 0) (pass)
End of inspection.
>> 1 Ω (R → ∞) (cable break)
Replace the cable harness of the seat
suspension (see Chapter 3.16).
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