U0158

Cruise Control

Pinpoint Test K: DTC U0158:00

Normal Operation

- DTC U0158:00 (Lost Communication With Head Up Display: No Sub Type Information)- sets in the Cruise-Control Module (C-CM) if data messages received from the Head Up Display (HUD) module 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:

- HUD (Head Up Display) module

- C-CM (Cruise-Control Module)

PINPOINT TEST K : DTC U0158:00

K1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Verify there is an observable symptom present.

Is an observable symptom present?

Yes
GO to K2.

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.

K2 CHECK THE COMMUNICATION NETWORK

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Network Test.

- Carry out the network test.

Does the HUD (Head Up Display) module pass the network test?

Yes
GO to K3.

No
REFER to Information Bus, The HUD (Head Up Display) Module Does Not Respond To The Scan Tool Pinpoint Test T: The Head Up Display (HUD) Module Does Not Respond To The Scan Tool.

K3 RETRIEVE THE RECORDED DTCs FROM THE C-CM (Cruise-Control Module) AND THE HUD (Head Up Display) MODULE SELF-TEST

- Check for recorded DTCs from the C-CM (Cruise-Control Module) and the HUD (Head Up Display) module self-test.

Is DTC U3003:16, DTC U3003:17 or U3003:1C recorded?

Yes
For the C-CM (Cruise-Control Module), GO to Pinpoint Test Q (U3003:16) Pinpoint Test Q: DTC U3003:16 or GO to Pinpoint Test R (U3003:17) Pinpoint Test R: DTC U3003:17.

For the HUD (Head Up Display) module, REFER to Fire Suppression System.

No
GO to K4.

K4 RECHECK THE C-CM (Cruise-Control Module) DTCs

- Clear the DTCs. Repeat the C-CM (Cruise-Control Module) self-test.

Is DTC U0158:00 still present?

Yes
GO to K5.

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.

K5 CHECK FOR DTC U0158:00 SET IN OTHER MODULES

- Clear all DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Retrieve the continuous memory DTCs from all modules.

Is DTC U0158:00 set in other modules?

Yes
INSTALL a new HUD (Head Up Display) module. CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new C-CM (Cruise-Control Module). REFER to Cruise-Control Module (C-CM) . TEST the system for normal operation.