Pinpoint Tests AY: DTC U0154:00

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AY: 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 Information Bus.

This pinpoint test is intended to diagnose the following:

- OCSM
- IPC



PINPOINT TEST AY: DTC U0154:00

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AY1 VERIFY THE CUSTOMER CONCERN


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

Yes
GO to AY2.

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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AY2 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 AY3.

No
REFER to Information Bus.

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AY3 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
GO to Pinpoint Test BI (U3003:16) or GO to Pinpoint Test BJ (U3003:17). Pinpoint Tests BI: DTC U3003:16 Pinpoint Tests BJ: DTC U3003:17

No
GO to AY4.

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AY4 RECHECK THE IPC DTCs


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

Yes
GO to AY5.

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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AY5 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 Restraint Systems. 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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