Grammer MSG95EAC - Page 22

Repair manual GRAMMER seat suspension MSG95EAC – November 2012
Material no. 1 277 338
2.3 Troubleshooting – Locating the fault
Page 4 of 15
Step
no.
Inspect/operate Result/Specified status Troubleshooting
2.6 • Disconnect the electrical connection (A) between the sensor
module and the cable harness for seat suspension.
Measuring instructions: Connect the negative line from the
ohmmeter to P3.
• Measure the resistance at the pins P3 and P1 at the plug of the
sensor module (STVB A):
P3 (ground) Ω P1 (sensor 8.5V)
= 7.6 MΩ (±
±±
± 1%)
Replace the cable harness of the seat
suspension (see Chapter 3.16).
>> 7.6 MΩ (R → ∞) (interruption) or
<< 7.6 MΩ (R → 0) (short-circuit)
Replace the sensor module
(see Chapter 3.9).
2.7 • Measure the resistance at the contacts K10 and K4 in the socket
of the cable harness of the seat suspension (STVB C):
K10 (ground) Ω K4 (voltage 12 V at the
electromagnet for 3/2)
= 28.5 Ω (±
±±
± 1%)
Proceed with inspection step no. 2.8.
>> 28.5 Ω (R → ∞) (interruption) or
<< 28.5 Ω (R → 0) (short-circuit)
Proceed with inspection step no. 2.9.