AB(diag)-85
AIRBAG SYSTEM (DIAGNOSTICS)
Diagnostic Chart with Trouble Code
1. MODEL WITH CURTAIN AIRBAG OR LAP SEAT BELT PRETENSIONER
Step
Check
Yes
No
1
CHECK SEAT BELT PRETENSIONER.
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Disconnect the connector (AB26) from seat
belt pretensioner (RH).
3) Connect the connector (1N) in the test har-
ness N to the connector (AB26).
4) Connect the airbag resistor to connector
(2N) in the test harness N.
5) Connect the battery ground cable and turn
the ignition switch to ON.
Does the airbag warning light
illuminate for 6 seconds and go
off?
Replace the seat
belt pretensioner
(RH). <Ref. to SB-
14, Front Seat
Belt.>
Go to step 2.
2
CHECK AIRBAG REAR HARNESS (PRE-
TENSIONER HARNESS RH).
1) Turn the ignition switch OFF, disconnect the
battery ground cable, and wait more than 20
seconds.
2) Disconnect the airbag resistor from test
harness.
3) For the model with lap seat belt preten-
sioner, disconnect the connector (AB30) from
lap seat belt pretensioner.
4) Disconnect the connector (AB24) from side
airbag module (RH).
5) Disconnect the connector (AB33) from cur-
tain airbag module (RH).
6) Disconnect the connectors (AB17) and
(AB18) from airbag control module.
7) Connect the connector (1U) in the test har-
ness U to connector (AB18).
8) Measure the resistance between connector
(3U) in the test harness V and connector (2N)
in the test harness N.
Connector & terminal
(3U) No. 17 — (2N) No. 2:
(3U) No. 19 — (2N) No. 1:
Is the resistance less than 10
Ω?
Go to step 3.
Replace the airbag
rear harness with
body harness.
3
CHECK AIRBAG REAR HARNESS (PRE-
TENSIONER HARNESS RH).
Measure the resistance between connector
(3U) terminals in the test harness U.
Connector & terminal
(3U) No. 19 — (3U) No. 17:
Is the resistance more than 1
M
Ω?
Go to step 4.
Replace the airbag
rear harness with
body harness.
4
CHECK AIRBAG REAR HARNESS (PRE-
TENSIONER HARNESS RH).
Measure the resistance between connector
(3U) in the test harness U and chassis ground.
Connector & terminal
(3U) No. 17 — Chassis ground:
(3U) No. 19 — Chassis ground:
Is the resistance more than 1
M
Ω?
Replace the airbag
control module.
<Ref. to AB-22,
Airbag Control
Module.>
Replace the airbag
rear harness with
body harness.