DTC B0070:1C


id080200823600


System Malfunction Location

•  Diagnostic circuit voltage malfunction in driver-side pre-tensioner seat belt

Detection Condition

Warning
•  Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
•  Diagnostic circuit voltage malfunction in driver-side pre-tensioner seat belt

Possible Causes

•  Driver-side pre-tensioner seat belt connector malfunction
•  Short to body ground or spontaneous short to power supply in wiring harness between driver-side pre-tensioner seat belt and SAS control module
•  SAS control module malfunction

System Wiring Diagram

am2zzw00001233

Diagnostic Procedure

Step

Inspection

Action

1
INSPECT DRIVER-SIDE PRE-TENSIONER SEAT BELT CONNECTOR
Warning
•  Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components.
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Remove the B-pillar lower trim (Driver's side).
•  Disconnect the driver-side pre-tensioner seat belt connector.
•  Inspect the driver-side pre-tensioner seat belt connector. (Corrosion, damage, and disconnected pins)
•  Is there any malfunction of the driver-side pre-tensioner seat belt connector?
Yes
Replace the driver-side pre-tensioner seat belt wiring harness.
No
Go to the next step.
2
INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND DRIVER-SIDE PRE-TENSIONER SEAT BELT FOR SHORT TO BODY GROUND
•  Remove the column cover.
•  Disconnect the clock spring connector.
•  Remove the glove compartment cover.
•  Disconnect the passenger-side air bag module connector.
•  Disconnect the driver and passenger-side side air bag module connectors.
•  Remove the headliner.
•  Disconnect the driver and passenger-side curtain air bag module connectors.
•  Disconnect the passenger-side pre-tensioner seat belt connector.
•  Remove the rear console. (See REAR CONSOLE REMOVAL/INSTALLATION.)
•  Disconnect the SAS control module connectors.
•  Inspect for a continuity between SAS control module connector terminal 2A and body ground, SAS control module connector terminal 2C and body ground.
Note
•  Inspect for continuity while shaking the wiring harness between the SAS control module and the driver-side pre-tensioner seat belt.
•  Is there continuity?
Yes
Replace the wiring harness between the SAS control module and the driver-side pre-tensioner seat belt.
No
Go to the next step.
3
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND DRIVER-SIDE PRE-TENSIONER SEAT BELT FOR A SHORT CIRCUIT TO THE POWER SUPPLY
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position with SAS control module connector and driver-side pre-tensioner seat belt connector disconnected.
•  Measure the voltage of SAS control module connector terminals 2A and 2C.
Note
•  Measure the voltage while shaking the wiring harness between the SAS control module and driver-side pre-tensioner seat belt.
•  Is the voltage measured?
Yes
Replace the wiring harness between the SAS control module and the driver-side pre-tensioner seat belt.
No
Go to the next step.
4
PERFORM SAS CONTROL MODULE DTC INSPECTION
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position.
•  Clear the DTC for the SAS control module using the M-MDS.
•  Perform the DTC inspection for the SAS control module using the M-MDS.
•  Are the same DTCs present?
Yes
Replace the SAS control module.
No
DTC troubleshooting completed.