Pinpoint Test AV: DTC U0151:87
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test AV: DTC U0151:87
Normal Operation
- DTC U0151:87 (Lost Communication With Restraints Control Module: No Sub-Type Information) - sets in the Instrument Panel Cluster (IPC) if data messages received from the Restraints Control Module (RCM) over the High Speed Controller Area Network (HS-CAN) are missing for more than 5 seconds. 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:
- RCM
- IPC
PINPOINT TEST AV: DTC U0151:87
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AV1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
Yes
GO to AV2.
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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AV2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the RCM pass the network test?
Yes
GO to AV3.
No
REFER to Module Communications Network Testing and Inspection.
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AV3 RETRIEVE THE RECORDED DTCs FROM THE IPC AND RCM SELF-TESTS
- Check for recorded DTCs from the IPC and RCM self-tests.
- Is DTC U3003:16 or DTC U3003:17 recorded?
Yes
For the IPC, GO to Pinpoint Test AY (U3003:16) or GO to Pinpoint Test AZ (U3003:17). For the RCM, REFER to Supplemental Restraint System Testing and Inspection. Pinpoint Test AY: DTC U3003:16 Pinpoint Test AZ: DTC U3003:17
No
GO to AV4.
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AV4 RECHECK THE IPC DTCs
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the Programmable Module Installation (PMI) or PMI may not have been carried out.
- Clear the DTCs. Repeat the IPC self-test.
- Is DTC U0151:87 still present?
Yes
GO to AV5.
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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AV5 CHECK FOR DTC U0151:87 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 U0151:87 set in the Occupant Classification System Module (OCSM)?
Yes
INSTALL a new RCM. 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) Service and Repair. TEST the system for normal operation.
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