DTC 8-6
DTC 8-6: Internal failure of SRS unit, or two failure at a timeBesides indicating an abnormality in the SRS unit, DTC 8-6 may also indicate that two problems equivalent to DTC 1-1 and 2-4, 1-4 and 2-1, or 1-4 and 2-4 occurred at the same time. Proceed in the order shown below.
1. Erase the DTC memory.
2. Turn the ignition switch ON (II), and check that the SRS indicator light comes on for about six seconds, and then goes off.
Does the SRS indicator light stay on?
YES - Go to step 3.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.
3. Disconnect the battery negative cable, and wait for three minutes.
4. Disconnect the driver's airbag and front passenger's airbag connectors (A).
5. Disconnect the SRS main harness 18P connector (A) from the SRS unit (B).
6. Reconnect the battery negative cable.
7. Turn the ignition switch ON (II).
SRS Main Harness 18P Connector (Wire Side Of Female Terminals):
8. Check for voltage between the No.10 terminal of the SRS main harness 18P connector and ground and between the No.14 terminal and ground. There should be 0.5 V or less.
Are voltages as specified?
YES - Go to step 9.
NO - Short to power in the SRS main harness; replace the SRS main harness.
SRS Main Harness 18P Connector (Wire Side Of Female Terminals):
9. Check for voltage between the No.1 terminal of the SRS main harness 18P connector and ground, and between the No.13 terminal and ground. There should be 0.5 V or less.
Are voltages as specified?
YES - Faulty SRS unit; replace the SRS unit.
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Disconnect the cable reel 2P connector (A) form the SRS main harness 2P connector (B).
12. Turn the ignition switch ON (II).
SRS Main Harness 18P Connector (Wire Side Of Female Terminals):
13. Check for voltage between the No.1 terminal of the SRS main harness 18P connector and ground, and between No. 13 terminal and ground. There should be 0.5 V or less.
Is the voltage as specified?
YES - Short to power in the cable reel; replace the cable reel.
NO - Short to power in the SRS main harness; replace the SRS main harness.