Communication Fault

Communication fault

Checking components and wiring








- Switch off the ignition. Wait 10 seconds
- Disconnect the connector from the pressure sensor in the right-hand door.
- Disconnect the connectors from the supplemental restraint system module (SRS).

Caution! Do not touch the terminal pins in the supplemental restraint system module (SRS). There is a risk of static discharge. This could damage the supplemental restraint system module (SRS).

Check the connectors for the pressure sensor and the supplemental restraint system module (SRS). Check for damaged pins and terminals. Check for contact resistance.
Remedy as necessary.
Check the cable between the supplemental restraint system module (SRS) and the side impact sensor connector. Check for an open-circuit.
Check the cable between:
- Supplemental restraint system module (SRS) terminal #A66 and pressure sensor connector terminal #1.
- Supplemental restraint system module (SRS) terminal #A67 and pressure sensor connector terminal #2.
Remedy as necessary.
Replace the pressure sensor if no fault is detected.

Other information
- Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS)
- Signal specification Signal Specification, Supplemental Restraint System Module (SRS)
- For further information about cable routing and terminals, see the wiring diagram
- Air bag supplemental restraint system Service and Repair Air bag supplemental restraint system Service and Repair
- Collision sensor, side Collision Sensor, Side Collision sensor, side Collision Sensor, Side
- Wiring harness supplemental restraint system (SRS) Wiring Harness Supplemental Restraint System (SRS)
- Checking wiring and terminals Checking Wiring and Terminals

Select "Continue" when the fault has been remedied.

Continue - Verification

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Verification




Verification

Hint: After carrying out the repair check that the fault has been remedied.




- Switch off the ignition. Wait 10 seconds
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead. Wait 10 seconds.

Warning! There must not be anyone inside the passenger compartment when the battery is connected.

Read diagnostic trouble codes by clicking the VCT2000 symbol.
If the fault is intermittent, the fault has been remedied.





Is the fault intermittent?

Yes - Troubleshooting procedure complete

No - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit Fault-Tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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