Roadmaster V8-305 5.0L (1992)
Safing Sensor: Technical Service Bulletins
Air Bag - Production Change to Forward Sensors
Bulletin 92-9-7
Date Nov. '91
Ref. No. 92-56-9
Corp. Ref. No. 109006
SUBJECT:
SERVICE MANUAL UPDATE - SECTION 9J - SIR DIAGNOSIS
MODELS AFFECTED:
1992 ROADMASTER
After start of production, changes were made in the SIR System involving the forward discriminating sensors and associated circuit wiring.
As a result, on vehicles before VIN NR421429, the 1992 Roadmaster Preliminary Service Manual must be used for SIR diagnosis.
For vehicles numbered NR421429 and later, the 1992 Roadmaster Final Service Manual must be used.
A quick check to verify early or later forward discriminating sensors and circuit wiring involves the number of pins on the right hand sensor:
Before VIN NR421429 - 3 pin sensor
VIN NR421429 and later - 2 pin sensor
When servicing the SIR System on the 1992 Roadmaster, identify which SIR System circuit you are diagnosing and use the correct manual.
