SRS DTC 71-2x
DTC 71-2x ("x" can be 0 thru 9 or A thru F) : Short in the Driver's Seat Position Sensor
- Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed .
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures , General Troubleshooting Information , and Battery Terminal Disconnection and Reconnection .
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software , and retest.
| DTC Description | DTC |
|---|---|
DTC (SRS)
- Problem verification
-1. Clear the DTCs with the HDS .
-2. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.
-3. Check for DTCs with the HDS .
DTC Description DTC Is DTC 71-2x indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures . If another DTC is indicated, troubleshoot the DTC.
- Driver's seat position sensor check
-1. Press the engine start/stop button to select the OFF mode.
-2. Disconnect the following connector.
Driver's seat position sensor 2P connector (on the driver's seat wire harness) -3. Clear the DTCs with the HDS .
-4. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.
-5. Check for DTCs with the HDS .
DTC Description DTC Is DTC 71-2x indicated?
YES
Go to step 3.
NO
Replace the driver's seat position sensor , then clear the DTC.
- Shorted wire check (SS+ line)
-1. Press the engine start/stop button to select the OFF mode.
-2. Disconnect the negative cable from the battery, then wait at least 3 minutes.
-3. Disconnect the following connector.
SRS unit connector B (39P) -4. Measure the resistance between test points 1 and 2.
Test condition OFF mode Driver's seat position sensor 2P connector (on the driver's seat wire harness): disconnected SRS unit connector B (39P): disconnected Test circuit SS+ Test point 1 SRS unit connector B (39P) No. 37 Test point 2 Body ground Is there an open circuit, or at least 1 MΩ?
YES
The SS+ wire is OK. Replace the driver's seat position sensor , then clear the DTC, and retest. If the DTC is still present, replace the SRS unit .
NO
Short to ground in the floor wire harness or the driver's seat wire harness; replace the faulty harness, then clear the DTC.