DTC B1913, B1916, B1932, B1934
id080200801700
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DTC |
B1913 |
Driver-side air bag module circuit short to body ground (air bag system warning light DTC 19 is displayed.) |
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B1916 |
Driver-side air bag module circuit short to power supply |
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B1932 |
Driver-side air bag module circuit resistance high |
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B1934 |
Driver-side air bag module circuit resistance low |
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DETECTION CONDITION
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• Abnormal resistance (other than 1.5—4.4 ohms) detected in the driver-side air bag module circuit
• Malfunction in the wiring harness between the driver-side air bag module and SAS control module
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POSSIBLE CAUSE
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• Clock spring connector malfunction
• Driver-side air bag module malfunction
• Clock spring malfunction
• Open or short circuit in the wiring harness between the clock spring and SAS control module
• SAS control module malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT DRIVER‐SIDE AIR BAG MODULE CONNECTOR (CLOCK SPRING)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the driver-side air bag module.
• Is there any malfunction of the clock spring connector?
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Yes
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Replace the clock spring.
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No
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Go to the next step.
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2
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VERIFY WHETHER MALFUNCTION IS IN DRIVER‐SIDE AIR BAG MODULE OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and thermometer checker) or apply 2-ohm resistance to clock spring connector terminals 3A and 3B.
• Set the resistance of the SST (Fuel and thermometer checker) to the 2-ohm position.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Are DTCs B1913, B1916, B1932 and/or B1934 indicated?
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Yes
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Go to the next step.
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No
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Replace the driver-side air bag module.
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3
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INSPECT CLOCK SPRING
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.)
• Disconnect the clock spring connector.
• Inspect the clock spring.
(See CLOCK SPRING INSPECTION.)
• Is the clock spring normal?
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Yes
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Go to the next step.
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No
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Replace the clock spring.
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4
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INSPECT WIRING HARNESS BETWEEN CLOCK SPRING AND SAS CONTROL MODULE
• Remove the glove compartment.(See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
• Disconnect the passenger-side air bag module connector.
• Disconnect the driver and passenger-side seat connectors.
• Disconnect the driver and passenger-side curtain air bag module connector.
• Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.)
• Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
• Remove the console. (See CONSOLE REMOVAL/INSTALLATION.)
• Disconnect the SAS control module connector.
• Inspect the wiring harness between SAS control module connector terminal 1S and clock spring terminal 1D, SAS control module connector terminal 1V and clock spring terminal 1C for the following:
• Is the wiring harness normal?
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Yes
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Go to the next step.
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No
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Replace the air bag wiring harness.
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5
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INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND DRIVER-SIDE AIR BAG MODULE 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 and driver-side air bag module connector disconnected.
• Measure the voltage of SAS control module connector terminals 1S and 1V of SAS control module harness side connector.
• Is the voltage measured?
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Yes
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Replace the air bag wiring harness.
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No
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Go to the next step.
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6
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INSPECT DTCs
• 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 DTCs using the M-MDS.
(See CLEARING DTC.)
• Verify DTCs using the M-MDS.
(See DTC DISPLAY.)
• Is DTC B1913, B1916, B1932 and/or B1934 displayed again?
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Yes
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Replace the SAS control module.
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No
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DTC troubleshooting completed.
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