Table C Air Bag Warning Lamp Does Not Come On

Diagnostic Chart:

Wiring Diagram:

NOTE:

When measurements are requested in this table, use J 39200 DVM with the correct terminal adapter from J 35616-A CONNECTOR TEST ADAPTER KIT. When a check for proper connection is requested, refer to INTERMITTENTS AND POOR CONNECTIONS in Diagrams. When a wire, connector or terminal repair is requested, use J 38125-A TERMINAL REPAIR KIT and refer to WIRING REPAIR. Service and Repair

CIRCUIT DESCRIPTION

When the ignition switch is first turned to RUN, the CLUSTER Fuse applies battery voltage to the AIR BAG warning lamp that is connected to INFLATABLE RESTRAINT INDICATOR, terminal 7. The AIR BAG fuse applies battery voltage to the IGNITION input, terminal 10. The inflatable restraint Sensing and Diagnostic Module (SDM) responds by flashing the AIR BAG warning lamp seven times.

TABLE TEST DESCRIPTION

Number(s) below refer to step number(s) on the diagnostic table.
2. This test determines whether the malfunction is in the SDM circuitry or in the instrument cluster power feed circuitry.
3. This test determines whether voltage is present in the warning lamp circuit.
4. This test isolates CKT 358 and checks for a short in CKT 358 to B+.
6. This test determines if the malfunction is in the instrument cluster connector.
8. This test isolates an open in the warning lamp circuitry.
11. This test checks whether power is available to the instrument cluster power feed circuit
12. This test checks for a short from the instrument cluster power feed circuit to ground.
13. This test determines whether the short-to-ground is due to a short in the wiring or internal to the instrument cluster
17. This test determines if the malfunction is in the instrument cluster connector.
19. This test determines whether the malfunction is due to an open power feed circuit from the CLUSTER Fuse.