Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the wires








- Ignition off.
- Disconnect the 2 pin connector under the left seat.

Warning! Never use an ohmmeter or any other charged measuring instrument on a disconnected, undeployed explosive air bag. There is a risk that the air bag could be deployed!

Caution! Avoid touching the contact pins in the supplemental restraint system (SRS) control unit. There is a risk of an electrostatic discharge which can cause damage to the supplemental restraint system (SRS) control unit.

Check the wire between the supplemental restraint system (SRS) control unit 4A (4) and the 2 pin connector 1 for a short circuit to voltage supply as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the wire between the supplemental restraint system (SRS) control unit 3A (3) and the 2 pin connector 2 for a short circuit to voltage supply as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Additional information:
- To access/replace the supplemental restraint system (SRS) control unit and connector, Service and Repair.
- To connect the test box, see Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS).
- With ignition off and the 2 pin connector disconnected, the resistance between the 2 pin connector 1, 2 (to the supplemental restraint system (SRS) control unit) and the disconnected battery positive lead should be infinite.
- For more information on removal of battery cables, see Battery, disconnecting Battery Disconnecting.
- With ignition off and the 2 pin connector disconnected, the resistance between the 2 pin connector 1 and 2 (to the supplemental restraint system (SRS) control unit) should be approximately 22 k(.
- For information on repairing the SRS wiring, see Cable harness SRS system, repair Procedures.
- For additional values, see Signal specification Signal Description, Supplemental Restraint System (SRS) Control Unit.









Is there a fault with the wire?

Yes - Verification

No - Replacing the component

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Replacing the component
Test by replacing the side air bag as described in Airbag module seat (SIPS), replacing Airbag Module Seat (SIPS), Replacing.

Continue - Verification

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Verification




Verification

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




- Ignition off
- Disconnect the battery negative lead
- Reinstall the connectors, components etc.
- Ignition on
- Connect the battery negative lead.

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

- Read off diagnostic trouble codes (DTCs).
The fault is no longer present if the diagnostic trouble code (DTC) status is intermittent.





Is the diagnostic trouble code (DTC) intermittent?

Yes - Verification completed

No - Trouble-shooting information

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Trouble-shooting 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 the wires

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