DTC B1884, B1890
id080200801600
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DTC |
B1884 |
Passenger air bag deactivation (PAD) indicator circuit open or short to body ground |
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B1890 |
Passenger air bag deactivation (PAD) indicator circuit short to power supply |
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DETECTION CONDITION
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• Malfunction in PAD indicator circuit
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POSSIBLE CAUSE
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• A/B 7.5 A fuse malfunction
• Battery malfunction
• Open circuit in wiring harness between battery and PAD indicator
• PAD indicator malfunction
• Open or short circuit in wiring harness between PAD indicator 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 OPERATION OF PAD INDICATOR
• Turn the ignition switch to the ON position.
• Does the PAD indicator illuminate?
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Yes
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Go to Step 6.
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No
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Go to the next step.
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2
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INSPECT FUSE
• Remove the A/B 7.5 A fuse.
• Is the fuse normal?
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Yes
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Install the fuse, then go to the next step.
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No
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Replace the fuse.
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3
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INSPECT BATTERY
• Measure the battery positive voltage.
• Is the voltage 9 V―16 V?
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Yes
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Go to the next step.
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No
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Battery is malfunctioning
Inspect the charge/discharge system.
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4
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INSPECT WIRING HARNESS BETWEEN BATTERY AND PAD INDICATOR
• Turn the ignition switch to the ON position.
• Remove the front scuff plate inner. (See FRONT SCUFF PLATE REMOVAL/INSTALLATION.)
• Remove the front side trim. (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
• Remove the console panel.(See CONSOLE PANEL REMOVAL/INSTALLATION.)
• Remove the console. (See CONSOLE REMOVAL/INSTALLATION.)
• Remove the bonnet release lever. (See BONNET LATCH AND RELEASE LEVER REMOVAL/INSTALLATION.)
• Remove the lower panel. (See LOWER PANEL REMOVAL/INSTALLATION.)
• Measure the information display terminal E voltage.
• Is the voltage 9 V or more?
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Yes
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Go to the next step.
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No
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Repair the wiring harness between the battery and information display.
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5
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INSPECT PAD INDICATOR
• Ground information display terminal I using a jumper wire.
• Turn the ignition switch to the ON position.
• Does the PAD indicator illuminate?
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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 information display.
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6
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INSPECT WIRING HARNESS BETWEEN PAD INDICATOR AND SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Disconnect the SAS control module connector.
• Inspect the wiring harness between information display connector terminal I and SAS control module connector terminal 1U for the following:
• Is the wiring harness normal?
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Yes
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Replace the SAS control module.
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No
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Replace the air bag wiring harness.
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7
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INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PAD INDICATOR FOR A SHORT CIRCUIT TO THE POWER SUPPLY
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage of SAS control module connector terminal 1U.
• 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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8
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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 the 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 B1884 and/or B1890 displayed.
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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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