DTC C1946, C1947, C1948, C1981, C1982 DETECTION CONDITION AND POSSIBLE CAUSE DTC C1946 Seat track position sensor circuit open C1947 Seat track position sensor circuit short to body ground C1948 Seat track position sensor circuit resistance not within specification C1981 Seat track position sensor circuit malfunction C1982 Seat track position sensor 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 seat track position sensor circuit. POSSIBLE CAUSE Seat track position sensor malfunction Malfunction of connector between seat track position sensor and SAS control module. Open or short circuit in wiring harness between seat track position sensor and SAS control module. SAS control module malfunction
Scheme 81
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | INSPECT SEAT TRACK POSITION SENSOR CIRCUIT Using the M-MDS, verify the following PID/DATA monitor. (See PID/DATA MONITOR DISPLAY .) TRAK_SW Is the seat track position sensor circuit normal? | Yes | Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .) |
| No | Go to the next step. | ||
| 2 | INSPECT WIRING HARNESS BETWEEN SEAT TRACK POSITION SENSOR AND SAS CONTROL MODULE WARNING: Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the air bag system service warnings and cautions before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS or AIR BAG SYSTEM 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. Remove the glove compartment. Disconnect the passenger-side air bag module connector. Disconnect the driver and passenger-side front seat connectors. Disconnect the driver and passenger-side curtain air bag module connectors. Remove the B-pillar lower trim. Disconnect the driver and passenger-side pre-tensioner seat belt connectors. Disconnect the seat track position sensor connector. Inspect the wiring harness between SAS control module terminal and seat track position sensor terminals for short to ground, short to power supply, and open circuit: 2AB-A 2AF-C Is the wiring harness normal? | Yes | Replace the seat track position sensor, then go to the next step. |
| No | Replace wiring harness, then go to next step. | ||
| 3 | INSPECT SAS CONTROL MODULE Connect the SAS control module connector. Connect the clock spring connector. Connect the passenger-side air bag module connector. Connect the driver and passenger-side front seat connectors. Connect the driver and passenger-side curtain air bag module connectors. Connect the driver and passenger-side pre tensioner seat belt connectors. Connect the seat track position sensor connector. Are DTCs C1946, C1947, C1948, C1981 and/or C1982 indicated? | Yes | Replace the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION .) |
| No | DTC troubleshooting completed | ||
| WARNING |
|---|
| Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the air bag system service warnings and cautions before handling the air bag system components. (See AIR BAG SYSTEM SERVICE WARNINGS or AIR BAG SYSTEM SERVICE CAUTIONS .) |
DTC C1946, C1947, C1948, C1981, C1982 DIAGNOSIS PROCEDURE