DTC B1881, B1882, B1883, B1886
id080200801500
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DTC |
B1881 |
Passenger-side pre-tensioner seat belt circuit resistance high |
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B1882 |
Passenger-side pre-tensioner seat belt circuit short to power supply |
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B1883 |
Passenger-side pre-tensioner seat belt circuit short to body ground |
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B1886 |
Passenger-side pre-tensioner seat belt circuit resistance low |
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DETECTION CONDITION
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• Abnormal resistance (other than 1.5—3.7 ohms) detected in the passenger-side pre-tensioner circuit
• Malfunction in the wiring harness between the passenger-side pre-tensioner seat belt and SAS control module
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POSSIBLE CAUSE
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• Passenger-side pre-tensioner seat belt connector malfunction
• Open or short circuit in the wiring harness between the passenger-side pre-tensioner seat belt and SAS control module
• Passenger-side pre-tensioner seat belt malfunction
• 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 PASSENGER‐SIDE PRE-TENSIONER SEAT BELT CONNECTOR
• 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. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.)
• Disconnect the passenger-side pre-tensioner connector.
• Is there any malfunction of the passenger-side pre-tensioner connector?
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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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2
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VERIFY WHETHER MALFUNCTION IS IN PASSENGER‐SIDE PRE-TENSIONER SEAT BELT OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and thermometer checker) or apply 2-ohm resistance to passenger-side pre-tensioner connector terminals A and B.
• 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 B1881, B1882, B1883 and/or B1886 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 passenger-side pre-tensioner.
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3
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INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND PASSENGER-SIDE PRE-TENSIONER SEAT BELT
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Disconnect the SST (Fuel and thermometer checker) or the 2 ohm resistance.
• Disconnect all SAS control module connectors.
• Inspect the wiring harnesses between SAS control module connector terminal 2J and passenger-side pre-tensioner seat belt connector terminal A, and SAS control module connector terminal 2G and passenger-side pre-tensioner seat belt connector terminal B 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 wiring harness between the SAS control module and the passenger-side pre-tensioner seat belt.
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4
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INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PASSENGER-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 and passenger-side pre-tensioner seat belt connector disconnected.
• Measure the voltage of SAS control module connector terminals 2S and 2P of SAS control module harness side connector.
• Is the voltage measured?
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Yes
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Replace the wiring harness between the SAS control module and the passenger-side pre-tensioner seat belt.
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No
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Go to the next step.
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5
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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.)
• Are DTCs B1881, B1882, B1883 and/or B1886 indicated?
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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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