DTC B1884, B1890

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DTC B1884, B1890

B3E080201046W14

DTC | B1884 | Passenger air bag deactivation (PAD) indicator circuit open or short to body ground
B1890 | Passenger air bag deactivation (PAD) indicator circuit short to power supply

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.

• Malfunction in PAD indicator circuit

POSSIBLE CAUSE | • Open or short circuit in wiring harness between PAD indicator and SAS control module • Open circuit in wiring harness between battery and PAD indicator • PAD indicator malfunction • SAS control module malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT OPERATION OF PAD INDICATOR • Turn the ignition switch to the ON position. • Does the PAD indicator illuminate? | Yes | Go to the next step.
No | Go to Step 6.
2 | INSPECT FUSE • Remove the SAS 10 A fuse. • Is the fuse normal? | Yes | Install the fuse, then go to the next step.
No | Replace the fuse.
3 | INSPECT BATTERY • Measure the battery positive voltage. • Is the voltage 9 V16 V? | Yes | Go to the next step.
No | Battery is malfunctioning Inspect the charge/discharge system.
4 | INSPECT WIRING HARNESS BETWEEN BATTERY AND PAD INDICATOR • Turn the ignition switch to the ON position. • Measure the PAD indicator terminal A voltage. • Is the voltage 9 V or more? | Yes | Go to the next step.
No | Repair the wiring harness between the battery and PAD indicator.
5 | INSPECT PAD INDICATOR • Ground PAD indicator connector terminal B using a jumper wire. • Turn the ignition switch to the ON position. • Does the PAD indicator illuminate? | Yes | Go to the next step.
No | Replace the air bag wiring harness.

6

INSPECT WIRING HARNESS BETWEEN PAD INDICATOR AND SAS CONTROL MODULE

  Warning

  • Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner front buckles, which may seriously injure you. Read the service warnings before handling the air bag system components.
  (See SERVICE WARNINGS.)
  (See SERVICE CAUTIONS.)

• 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.
• Disconnect the passenger-side air bag module connector.
• Disconnect the driver and passenger-side curtain air bag module connector.
• Disconnect the front seat connector.
• Remove the console.
• Disconnect the SAS control module connector.
• Inspect the wiring harness between PAD indicator terminal B and SAS control module terminal 1G for the following:

  - Short to ground
  - Short to power supply
  - Open circuit

• Is the wiring harness normal?

Yes

Replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

No | Replace the air bag wiring harness.