NO.2 AIR BAG SYSTEM WARNING LIGHT IS ILLUMINATED ALL THE TIME
id080300800600
2
|
Air bag system warning light is illuminated all the time.
|
DESCRIPTION
|
Malfunction in air bag system warning light circuit (open circuit or short to power supply).
|
POSSIBLE CAUSE
|
• Weak battery
• SAS control module malfunction
• Instrument cluster (print plate) malfunction
• No connection in SAS control module connector
• Poor contact in instrument cluster connector (16-pin)
• Open or short to power supply circuit in wiring harness between instrument cluster and SAS control module
• Poor contact at terminals 3A of SAS control module connector
• Poor contact in wiring harness between terminal 3J of SAS control module connector and ground
• Poor contact in wiring harness between SAS 10 A fuse and terminal 3A of SAS control module
|
System Wiring Diagram
am2zzw00003807
|
Diagnostic Procedure
STEP |
INSPECTION |
ACTION |
|
---|---|---|---|
1
|
INSPECT BATTERY
• Measure voltage of battery.
• Is voltage 9 V or more?
|
Yes
|
Go to the next step.
|
No
|
Battery is weak.
Inspect charge/discharge system, then go to step 9.
(See BATTERY INSPECTION [ZJ, ZY].)
|
||
2
|
INSPECT DTCS IN INSTRUMENT CLUSTER
• Inspect the DTC for the instrument cluster on-board diagnostic system.
• Have DTCs been recorded in memory?
|
Yes
|
Perform the applicable DTC inspection, then go to step 9.
|
No
|
Go to the next step.
|
||
3
|
INSPECT DTCS IN SAS CONTROL MODULE
• Inspect the DTC for the SAS control module on-board diagnostic system.
(See DTC DISPLAY.)
• Have DTCs been recorded in memory?
|
Yes
|
Perform the applicable DTC inspection.
(See DTC TABLE.)
|
No
|
Go to the next step.
|
||
4
|
VERIFY THAT SAS CONTROL MODULE CONNECTOR IS CONNECTED
• Turn ignition switch to LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the rear console.
• Are all SAS control module connectors securely connected?
|
Yes
|
Go to the next step.
|
No
|
Reconnect the connector properly, then go to step 9.
|
||
5
|
INSPECT POWER SUPPLY CIRCUIT OF SAS CONTROL MODULE (TERMINAL 3A)
• Inspect voltage for PID/DATA monitor VPWR item using M-MDS.
(See PID/DATA MONITOR DISPLAY.)
• Is the PID value 9.0 V or more?
|
Yes
|
Go to step 8.
|
No
|
Go to the next step.
|
||
6
|
INSPECT WIRING HARNESS BETWEEN BATTERY AND FUSE BLOCK
• Turn ignition switch to ON position
• Measure voltage at terminals fuse block of connector.
• Is voltage of at least either terminal 9 V or more?
|
Yes
|
Go to the next step.
|
No
|
Repair wiring harnesses, then go to step 8.
|
||
7
|
INSPECT WIRING HARNESS BETWEEN FUSE BLOCK AND SAS CONTROL MODULE
• Measure voltage at terminals fuse block of connector.
• Is voltage of at least either terminal 9 V or more?
|
Yes
|
Repair wiring harnesses, then go to step 9.
|
No
|
Inspect fuse block, then go to step 9.
|
||
8
|
VERIFY THAT SAS CONTROL MODULE CONNECTOR TERMINAL 3J IS GROUND
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the column cover.
• Disconnect the clock spring connector.
• Remove the glove compartment.
• Disconnect the passenger-side air bag module connector.
• Disconnect the side air bag module connectors. (Vehicles with side air bag module)
• Disconnect the driver and passenger-side curtain air bag module connectors. (Vehicles with curtain air bag module)
• Remove the B-pillar lower trims.
• Disconnect the driver-side and passenger-side pre-tensioner seat belt connector.
• Remove the rear console.
• Disconnect the all SAS control module connectors.
• Inspect wiring harness between SAS control module connector terminal 3J and ground for following:
• Is wiring harness normal?
|
Yes
|
Replace the SAS control module, then go to next step.
|
No
|
Replace wiring harnesses, then go to the next step.
|
||
9
|
CONFIRM THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Connect the all SAS control module connectors.
• Connect the driver-side and passenger-side pre-tensioner seat belt connector.
• Connect the driver and passenger-side curtain air bag module connectors. (Vehicles with curtain air bag module)
• Connect the side air bag module connectors. (Vehicles with side air bag module)
• Connect the passenger-side air bag module connector.
• Connect the clock spring connector.
• Connect the instrument cluster connector.
• Connect the negative battery cable.
• Turn ignition switch to ON position.
• Does air bag system warning light operate properly?
|
Yes
|
Complete troubleshooting, then explain repairs to customer.
|
No
|
Recheck malfunction symptoms, then repeat from step 1 if malfunction recurs.
|