Toyota Corolla Repair Manual: Circuit inspection
1 Check d squib circuit(airbag sensor assy center – horn button assy)
- Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
- disconnect the connectors between the airbag sensor assy center and the horn button assy.
- connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
- turn the ignition switch to on.
- for the black connector (on the spiral cable sub–assy
side) between the horn button assy and the spiral cable
sub–assy, measure the voltage between d2+ and body
ground.
Ok: voltage: below 1 v
2 Check air bag sensor assy center
Sst 09843–18040
- Turn the ignition switch to lock.
- disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
- connect the connector to the airbag sensor assy center.
- using a service wire, connect d2+ and d2– of the black connector (on the spiral cable sub–assy side) between the horn button assy and the spiral cable sub–assy.
- connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- clear the dtc stored in memory .
- turn the ignition switch to lock, and wait at least for 20 seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- check the dtc .
Ok: dtc b1183/22 is not output.
Hint
: codes other than code b1183/22 may be output at this time, but they are not relevant to this check.
3 Check d squib
Sst 09843–18040
- Turn the ignition switch to lock.
- disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
- connect the horn button assy connectors.
- connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- clear the dtc stored in memory .
- turn the ignition switch to lock, and wait at least for 20 seconds.
- turn the ignition switch to on, and wait at least for 20 seconds.
- check the dtc .
Ok: dtc b1183/22 is not output.
Hint
: codes other than code b1183/22 may be output at this time, but they are not relevant to this check.
4 Use simulation method to check
Replace all srs components including the wire harness
5 Check instrument panel wire(airbag sensor assy center – spiral cable sub–assy)
- Turn the ignition switch to lock.
- disconnect the connector of the instrument panel wire.
- turn the ignition switch to on.
- ) for the connector (on the spiral cable sub–assy side) between
the horn button assy and the spiral cable sub–assy,
measure the voltage between d2+ and body ground.
Ok: voltage: below 1 v
6 Check spiral cable sub–assy
- For the black connector (on the spiral cable sub–assy
side) between the horn button assy and the spiral cable
sub–assy, measure the voltage between d2+ and body
ground.
Ok: voltage: below 1 v
7 Use simulation method to check
Replace all srs components including the wire harness
Circuit description
The d squib (2nd step) circuit consists of the airbag sensor assy center,
spiral cable sub–assy and horn button
assy.
It causes the srs to deploy when the srs deployment conditions are satisfied ...
Short in p squib (2nd step) circuit
Dtc b1185/57 short in p squib (2nd step) circuit ...
Other materials:
Inspection procedure
Hint:
read freeze frame data using the hand-held tester or the obd ii scan tool.
Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, it is
useful for determining whether
the vehicle was running or stopped, the engine was warmed up or not, the ...
Circuit description
The srs warning light is located on the combination meter.
When the srs is normal, the srs warning light lights up for approx. 6 Seconds
after the ignition switch is
turned from the lock position to on position, and then turns off automatically.
If there is a malfunction in the srs, the srs ...
Inspection
1. Inspect sliding roof limit switch
Inspect the sliding roof limit switch continuity.
Standard:
If the continuity is not as specified, replace the switch.
2. Inspect sliding roof drive gear sub–assy
Connect the positive (+) lead from the battery to terminal
2 and the nega ...