AB-49
AIRBAG SYSTEM (DIAGNOSTIC)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step Check Yes No
1 CHECK PASSENGERS AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Remove the glove box.
3) Disconnect the passenger’s airbag connec-
tor (AB27) and (AB4).
4) Connect the connector (1P) in test harness
P to connector (AB4).
5) Connect the airbag resistor to connector
(2P), (3P) in test harness P.
6) Connect the battery ground cable and turn
the ignition switch to ON.
Is the airbag warning light
turned on normally?
Replace the pas-
senger airbag
module. <Ref. to
AB-15, Passen-
ger’s Airbag Mod-
ule.>
Go to step 2.
2 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the airbag resistor from the
connector in test harness P.
3) Remove the instrument panel lower cover
and disconnect the connector (AB21) from
(AB26).
4) Disconnect the connector (AB3) from the
airbag control module, and connect the con-
nector (1R) in test harness R. <Ref. to AB-18,
Airbag Control Module.>
5) Measure the resistance between connector
(2R) in test harness R and the connector (2P)
in test harness P.
Connector & terminal
(2R) No. 3 — (2P) No. 3:
(2R) No. 5 — (2P) No. 4:
Is the resistance less than 10
Ω?
Go to step 3. Replace the airbag
main harness with
body harness.
3 CHECK AIRBAG MAIN HARNESS.
Measure the resistance of the connector (2R)
in test harness R.
Connector & terminal
(2R) No. 3 — (2R) No. 5:
(2R) No. 3 — Chassis ground:
(2R) No. 5 — Chassis ground:
Is the resistance more than 1
MΩ?
Replace the airbag
control module.
<Ref. to AB-18,
Airbag Control
Module.>
Replace the airbag
main harness with
body harness.
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