Grammer MSG 90.6PG - Page 75

Repair Manual MSG 90.6PG Commercial Vehicles, Omnibuses – November 2017
Material no. 1153450_c
2.4 Fault diagnosis
Page 14 of 16
TABLE OF CONTENTS
Step
no.
Inspect/operate Result/specified status Troubleshooting
6.2 • Release the belt latch at the belt buckle
(buzzing).
• Measure the resistance at the contacts in the
plug for vehicle connection (pin assignment for
Actros):
K4 (black) Ω K5 (blue)
<< 1 Ω (R→ 0) (short-circuit)
≥ 1 Ω (R→ ∞) (interruption)
End of inspection.
Replace the belt buckle
contact (see Chapter 3.28).