B1032

DTC Troubleshooting: B1032

DTC B1032:

MICU Lost Communication With SRS Unit (CDS Message)

NOTE:

- Before doing this troubleshooting, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTC with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Check for DTC with the HDS.

Is DTC B1032 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures.

4. Turn the ignition switch to LOCK (0).

5. Do the battery terminal disconnection procedure Procedures.

6. Disconnect SRS unit connector A (28P) from the SRS unit.

7. Disconnect driver's under-dash fuse/relay box connector P (30P).

8. Measure the resistance between SRS unit connector A (39P) terminal No. 11 and under-dash fuse/relay box connector P (30P) terminal No. 21. There should be 0-1.0 Ohms.






Is the resistance as specified?

YES -

Go to step 9.

NO -

There is an open in the BLU (YEL) wire of dashboard wire harness; replace dashboard wire harness.�

9. Measure the resistance between SRS unit connector A (39P) terminal No. 11 and body ground. There should be an open circuit or at least 1 MOhms.





Is the resistance as specified?

YES -

Go to step 10.

NO -

There is a short to ground in the dashboard wire harness; replace dashboard wire harness.

10. Measure the voltage between SRS unit connector A (39P) terminal No. 11 and body ground. There should be 0.1 V or less.





Is the voltage as specified?

YES -

Replace the SRS unit SRS Unit Replacement.�

NO -

There is a short to power in the dashboard wire harness; replace dashboard wire harness.�