Engine Controls - Noise From Under Dash

02-048

August 13, 2002

Applies To:
1999-01 Odyssey - ALL

Noise From Under the Dashboard While Driving Between 50 and 56 mph

SYMPTOM

A buzzing, growling, pinging, humming, fluttering, grinding, or rattling noise coming from under the dashboard while driving between 50 and 56 mph. This noise can be heard while driving at a steady speed or when lightly accelerating with the torque converter in lock-up.

PROBABLE CAUSE

A resonance from the engine compartment is transmitted through the shift cable into the passenger compartment.

CORRECTIVE ACTION

Replace the PCM with the appropriate countermeasured part. The countermeasured PCM reduces the probability of engine resonance.





PARTS INFORMATION





WARRANTY CLAIM INFORMATION

In warranty:
The normal warranty applies.

Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.

DIAGNOSIS

1. Locate the shift cable under the dashboard.





2. Wrap a length of duct tape around the shift cable so you have about 2 feet of tape extending from the cable. Make sure you can safely pull on the tape while driving.

3. Test-drive the vehicle to duplicate your customer's complaint. When you hear the noise from under the dashboard, pull on the tape to move the cable, and listen carefully for any change in pitch or loudness. Repeat this several times.

^ If the noise changes in pitch or loudness when you move the cable, remove the tape from the cable, and go to REPAIR PROCEDURE.

^ If there is no change in pitch or loudness when you move the cable, look for other possible causes of the noise, and repair as needed.

REPAIR PROCEDURE

Preparation

You need these items:

^ Your customer's ignition key for the vehicle.

^ PGM Tester with 5N3005 or later software on an 8MB program card

NOTE:
Make sure the PGM Tester's setup (current date and Market Destination) is correct before you use it.

^ Password for the PGM Tester (Ask your service manager for this five-character password, or get it from the Interactive Network (iN) VIN Status Inquiry display.)

^ Immobilizer PCM code (This VIN-specific, 4-digit code is available on the iN VIN Status Inquiry display. The code is changed daily, so use it as soon as you get it.)

Downloading From the Original PCM

1. Connect the PGM Tester to the 1 6P data link connector (DLC).

2. Insert the programmed ignition key into the ignition switch, and turn the ignition switch to ON (I I).

3. From the SYSTEM SELECT screen, select 5:
IMMOBI.

4. From the TEST MODE MENU-IMM screen, select
3: REPLACE BY 1 KEY.

5. Follow the screen prompts on the PGM Tester. (All immobilizer key transponder codes are automatically downloaded from the original PCM to the PGM Tester.) During this download process, make sure the ignition switch stays ON (II) and the PGM Tester stays connected.

6. When the downloading is complete, turn the ignition switch to LOCK (0).

Replacing the PCM





1. Pull back the carpet. Remove the driver's and passenger's heater lower covers to access the PCM.

2. Remove the PCM cover (two nuts).

3. Remove the PCM mounting nut and bolt.

4. Unplug the harness connectors from the PCM, and remove the PCM.

5. Plug the harness connectors into the new PCM.

6. Install the new PCM. Torque the mounting nut and bolt to 12 N~m (8.7 lb-ft).

7. Reinstall the PCM cover.

8. Reinstall the driver's and passenger's heater lower covers.

Uploading to the New PCM/Verifying the Repair

1. Turn the ignition switch to ON (II). Keep following the screen prompts on the PGM Tester. (All the transponder codes are automatically uploaded to the new PCM.)

2. When the uploading is complete, turn the ignition switch to LOCK (0), and disconnect the PGM Tester.

3. Start the engine to make sure the new PCM has been properly rewritten.