Resistance Too High
Resistance too high. Permanent fault
Checking the components
- Ignition off.
- Disconnect connector from the left inflatable curtain.
- Connect the special tool 951 1506 Test dummy 951 1506 Test Dummy to the left inflatable curtain connector.
Warning! Never use an ohmmeter or any other charged measuring instrument on a disconnected, undeployed explosive inflatable curtain. There is a risk that the inflatable curtain could be deployed!
Note! The special tool must be checked and fault-free. If the special tool is defective, the wrong diagnosis will be displayed and trouble-shooting will be more difficult.
- Ignition on, wait for approximately 10 seconds.
Read the diagnostic trouble codes.
If the diagnostic trouble code status changes from permanent to intermittent fault, replace the left inflatable curtain.
Additional information:
- To access/replace the left inflatable curtain, see IC (inflatable curtain) module, replacing IC (Inflatable Curtain) Module, Replacing.
- To check the special tool, see Calibration Calibrating the Special Tool.
Does the status of the diagnostic trouble code change?
Yes - Verification
No - Checking the components and wires
-------------------------------------------------
Checking the components and wires
- Ignition off.
- Disconnect the special tool 951 1506 Test dummy 951 1506 Test Dummy from the left inflatable curtain connector.
Warning! Never use an ohmmeter or any other charged measuring instrument on a disconnected, undeployed explosive inflatable curtain. There is a risk that the inflatable curtain 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 supplemental restraint system (SRS) control unit connector and the inflatable curtain connector housing and pins. The wire terminals must not be damaged or bent.
Check the wire between supplemental restraint system (SRS) control unit #21A (21), #22A (22) and connector #1, #3 on the left inflatable curtain for an open circuit, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.
Additional information:
- To access/replace the supplemental restraint system (SRS) control unit connector, see Supplemental restraint system module (SRS), replacing Service and Repair.
- To access/replace the left inflatable curtain connector, see IC (inflatable curtain) module, replacing IC (Inflatable Curtain) Module, Replacing.
- To connect the test box, see Connecting the breakout box Connecting the Breakout Box, Supplemental Restraint System Module (SRS).
- With ignition off and with the inflatable curtain connector disconnected the resistance between inflatable curtain connector #1 and #3 (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.
Select Continue when fault has been rectified.
Continue - Verification
-------------------------------------------------
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
-------------------------------------------------
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
------------------------
Attempt New Test - Checking the components
-------------------------------------------------