Pinpoint Test D: DTC U0167:00 Or U0426:00

Anti-Theft - Without Intelligent Access (IA)

Pinpoint Test D: DTC U0167:00 or U0426:00

Normal Operation

When the ignition is turned to the RUN or START position, the Instrument Panel Cluster (IPC) and the PCM send each other their ID over the High Speed Controller Area Network (HS-CAN). Each module then checks the ID it receives and compares with the ID stored in memory. If the IDs are missing or invalid, Passive Anti-Theft System (PATS) is disabled and does not allow the engine to start.

- DTC U0167:00 (Lost Communication With Vehicle Immobilizer Control Module: No Sub Type Information) - a continuous DTC that sets when the PCM does not receive any PATS data from the IPC over the HS-CAN. The target ID is only sent once per key cycle and within milliseconds of the ignition being turned to the RUN or START position.
- DTC U0426:00 (Invalid Data Received From Vehicle Immobilizer Control Module: No Sub Type Information) - a continuous DTC that sets when the PCM does not receive the expected target ID from the IPC over the HS-CAN. The target ID is only sent once per key cycle and within milliseconds of the ignition being turned to the RUN or START position.

This pinpoint test is intended to diagnose the following:

- HS-CAN concern
- Low battery state of charge
- IPC

PINPOINT TEST D: DTC U0167:00 OR U0426:00

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D1 CHECK THE IPC DTCs FROM THE SELF-TEST

- Check the recorded results from the IPC self-test.
- Are any IPC DTCs retrieved?

Yes
REFER to the IPC DTC Chart. Instrument Panel Cluster (IPC) DTC Chart

No
GO to D2.

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D2 CHECK THE BATTERY STATE OF CHARGE

NOTE: It might be necessary to check battery voltage while cranking the engine to make sure battery voltage is not dropping and causing the concern.

- Carry out the Battery Condition Test In Battery, Mounting and Cables Testing and Inspection.
- Did the battery pass the Battery Condition Test?

Yes
GO to D3.

No
RECHARGE or REPLACE the battery. REFER to Battery, Mounting and Cables Battery And Battery Tray - Exploded View.

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D3 CHECK FOR COMMUNICATION WITH THE IPC

- Enter the following diagnostic mode on the scan tool: Network Test.
- Does the IPC respond to the scan tool?

Yes
GO to D4.

No
REFER to Module Communications Network Testing and Inspection.

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D4 RECHECK THE PCM DTCs FROM THE SELF-TEST

- Enter the following diagnostic mode on the scan tool: Clear PCM Continuous DTCs.
- Cycle the ignition from RUN to OFF and then back to the RUN position.
- Enter the following diagnostic mode on the scan tool: PCM Self-Test.
- Is DTC U0167:87 or U0426:81 retrieved?

Yes
GO to D5.

No
The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

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D5 CHECK FOR CORRECT IPC OPERATION

- Disconnect the IPC connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the IPC connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new IPC. REFER to Instrumentation, Message Center, and Warning Chimes Service and Repair. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

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