TROUBLE DIAGNOSES — Supplemental Restraint System (SRS) — On-board Self-diagnosis (Cont'd) — Repair Procedure 3 — Warning lamp does not go off
BF-2013flowchartRepair Procedures 1 (BF-2011) and 3 (BF-2013) share the same A-B-C structure with same expected values; differ only in which fuse is checked first (METER on procedure 2 vs AIR BAG on procedure 3) and the entry/exit decision text.
On-board Self-diagnosis (Cont'd)
Repair Procedure 3 — Symptom: Warning lamp does not go off
1
A — Check the fuse used for the SRS "Air Bag".
NG
Replace the fuse.
OK
2
1) Turn ignition switch "OFF", disconnect battery ground cable and wait for at least 10 minutes. 2) Remove air bag module.
3
B — CHECK THE POWER SUPPLY OF SPIRAL CABLE HARNESSES. Disconnect spiral cable steering connector. Turn ignition switch "ON". Measure voltage between spiral cable steering connector terminals (7) and (1). Voltage between (1)-(7) should be Battery voltage.
OK
return to step 7
NG
4
C — 1) Remove spiral cable. 2) Disconnect spiral cable harness connector. 3) Check continuity: (1)-(1) Yes, (7)-(4) Yes.
OK
Replace air bag harness.
NG
5
Replace spiral cable.
6
Check the power supply of spiral cable again.
NG
return to step 4
OK
7
1) Replace steering wheel assembly (including diagnosis sensor unit). 2) Connect diagnosis sensor unit connectors. 3) Install air bag module. 4) Check warning lamp for normal operation.
OK
8
End
(1) - (7)
VoltageBattery voltage
(1) - (1)
ContinuityYes
(7) - (4)
ContinuityYes