No Connection
No connection
IMM-233 Antenna ring
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 981 3194 Replaced by 9511495 981 3194 Replaced by 951 1495
Checking start
Try to start the car.
Does the car start?
Yes - Checking cables and terminals.
No - Checking antenna ring
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Checking cables and terminals.
- Ignition off.
Check
- loose connections between antenna ring terminals (both terminal halves) and immobilizer control module terminal according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- the cable between antenna ring terminal #2 and immobilizer control module #9 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- the cable between antenna #4 and control module terminal #10 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and a short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Continue - Information
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Checking antenna ring
- Ignition off.
- Disconnect antenna ring
- Connect an ohmmeter between terminal #2 and #4 on the antenna ring.
The ohmmeter should read approximately 5 ohms.
Note! Note that the antenna ring casing should be gray at the connector if it is the correct antenna ring for immobilizer generation 3.
Is the reading OK?
OK - Checking antenna ring circuit
Not OK - Replacing component
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Checking antenna ring circuit
- Ignition off.
- Connect the adapter box 981 3194 Replaced by 9511495 981 3194 Replaced by 951 1495 and breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 according to Connecting the breakout box Connecting the Breakout Box.
- Disconnect immobilizer control module.
Connect an ohmmeter between breakout box terminal #55(#9) and antenna ring terminal #2.
Connect an ohmmeter between breakout box terminal #56(#10) and antenna ring terminal #4.
The ohmmeter should read approximately 0 ohms in both power supplies.
OK - Checking for a short-circuit to supply voltage
Not OK - Checking for an open-circuit
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Replacing component
Try a new antenna ring according to Replacing antenna ring Service and Repair.
Continue - Verification
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Checking for a short-circuit to supply voltage
- Ignition off.
- Immobilizer control module disabled.
Connect a voltmeter between breakout box terminal #55(#9) and #54(#8).
- Read off the voltmeter.
- Ignition on.
- Read off the voltmeter.
The voltmeter should read 0 V in both power supplies.
OK - Checking for a short-circuit to ground
Not OK - Checking for a short-circuit to supply voltage
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Checking for an open-circuit
Check relevant antenna ring cable for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
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Checking for a short-circuit to ground
- Ignition off.
- Immobilizer control module disabled.
Connect an ohmmeter between breakout box terminal #55(#9) and #54(#8).
Connect an ohmmeter between breakout box terminal #56(#10) and #54(#8).
In both cases the ohmmeter should read infinite resistance.
OK - Replacing component
Not OK - Checking for a short-circuit to ground
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Checking for a short-circuit to supply voltage
Check cable between immobilizer control module terminal #9 and antenna ring terminal #2 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Replacing component
Try a new immobilizer control module according to Replacing the control module Replacing the Control Module and initiate according to Initiating a new immobilizer control module Initiating A New Immobilizer Control Module.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Checking for a short-circuit to ground
Check the relevant antenna ring cable for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select "Continue" when the fault has been repaired.
Continue - Verification
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Verification
Verification
Hint: After finishing the repair check that the repair is successful and that the fault is corrected as follows.
- Ignition on.
- Erase diagnostic trouble codes (DTCs).
Try to start the car.
Does the car start?
Yes - VERIFIED
No - Verification, continued
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Verification, continued
Read diagnostic trouble codes (DTCs).
Has the diagnostic trouble code (DTC) been stored again?
Yes - VERIFICATION FAILED
No - VERIFIED
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VERIFIED - FAULT FOUND
VERIFICATION FAILED - 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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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - FAULT FOUND
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