Pinpoint Tests BA: DTC U0154:00

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test BA: DTC U0154:00

Normal Operation

- DTC U0154:00 (Lost Communication With Occupant Classification Sensor [OCS]: No Sub-Type Information) - sets in the Instrument Panel Cluster (IPC) if data messages received from the Occupant Classification System Module (OCSM) over the High Speed Controller Area Network (HS-CAN) are missing. For a complete list of all network messages, refer to Module Communications Network Testing and Inspection.

This pinpoint test is intended to diagnose the following:

- OCSM
- IPC

PINPOINT TEST BA: DTC U0154:00

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BA1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?

Yes
GO to BA2.

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

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BA2 CHECK THE COMMUNICATION NETWORK

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the OCSM pass the network test?

Yes
GO to BA3.

No
REFER to Module Communications Network Testing and Inspection.

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BA3 RETRIEVE THE RECORDED DTCs FROM THE OCSM SELF-TEST

- Check for recorded DTCs from the OCSM self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
REFER to Supplemental Restraint System Testing and Inspection.

No
GO to BA4.

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BA4 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST

- Check for recorded DTCs from the IPC self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
For DTC U3003:16, GO to Pinpoint Test BD Pinpoint Tests BD: DTC U3003:16. For DTC U3003:17, GO to Pinpoint Test BE Pinpoint Tests BE: DTC U3003:17.

No
GO to BA5.

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BA5 RECHECK THE IPC DTCs

- Clear the DTCs. Repeat the IPC self-test.
- Is DTC U0154:00 still present?

Yes
GO to BA6.

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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BA6 CHECK FOR DTC U0154:00 SET IN OTHER MODULES

- Clear all DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0154:00 set in the Restraints Control Module (RCM) module?

Yes
INSTALL a new OCSM. REFER to Supplemental Restraint System Service and Repair. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Instrument Panel Cluster (IPC). TEST the system for normal operation.

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