Engine Controls - A/C/Cruise Control/Shift Pos Ind. Inop

03-072

October 3, 2003

Applies To:
2003 Accord V6 - ALL

A/C, Cruise Control, A/T Shift Position Indicator Do Not Work (DTC U0155)

(Supersedes 03-072, dated July 23, 2011, to revise the information marked by the black bars)

REVISION SUMMARY

*Under WARRANTY CLAIM INFORMATION, a flat rate time was changed.*

SYMPTOM

The customer complains about at least one of these intermittent symptoms:

^ A/C doesn't work.

^ Cruise control doesn't work.

^ A/T shift position indicator in the instrument cluster doesn't work.

NOTE:
When this problem occurs, all of these symptoms are present, but the customer may not notice them all.

PROBABLE CAUSE

A communication problem between the F-CAN (controller area network) and the Powertrain Control Module (PCM).

CORRECTIVE ACTION

Update the PCM software.





WARRANTY CLAIM INFORMATION





The normal warranty applies.

REPAIR PROCEDURE

1. Connect the Honda Diagnostic System (HDS) to the DLC (data link connector), and check for DTCs.

^ If DTC U0155 (F-CAN malfunction/gauge control module) is stored, go to step 2.

^ If another DTC is stored, refer to the 2003-04 Accord V6 supplement manual for the appropriate troubleshooting.

^ If no DTC or other code is stored in the PCM, troubleshoot the customer's specific complaint.

2. If not already done, load the October 2003 or later iN network CD onto the iN master terminal. Loading instructions were included along with the CD mailing.

3. Make sure the vehicle battery is fully charged.

4. Update the PCM with the HIM (see service bulletin 01-023, using the Honda Interface Module to Update Control Units/Modules).

5. Connect the HDS to the data link connector (DLC). Use the HDS to clear any DTCs that may have been set during the PCM update.

6. Cycle the ignition switch to LOCK (0), and then to ON (II). Use the HDS to see if the DTCs have returned.

^ If the DTCs have returned, do the appropriate troubleshooting procedure(s) in the 2003-04 Accord Service Manual, then go to step 7.

^ If the DTCs are gone, go to step 7.

7. Do the idle learn procedure:

^ Make sure all electrical accessories (A/C, radio, lights, etc.) are off.

^ Start the engine, and let it run until it reaches normal operating temperature (the cooling fans cycle twice).

^ Let the engine idle for 10 minutes.





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