PCM/Noise Filter - DTC P0400 Set

Bulletin No. 018/97
Issue 08/20/97
Revised 10/31/97

Category
F

Applicable Model/s
1996 Protege

Subject:
NOISE FILTER ESTABLISHMENT FOR DTC P0400

NOTE:
The Repair Procedure portion of this bulletin has changed. Replace the original bulletin with this revised copy.

APPLICABLE MODELS / VIN
1996 Protege vehicles with Z5 Engine

DESCRIPTION





Under certain load and RPM ranges (see table) excessive noise may be generated in the EGR boost sensor circuit causing DTC P0400 to be set.

REPAIR PROCEDURE
Vehicles produced before "A" suffix PCM (with a VIN of JM1BB141*T0322397 and lower and production date before 10/26/95).

1. Perform diagnostic procedures for DTC P0400 as noted in service bulletin F-013/97*.

2. If no cause was found for condition when performing diagnostic procedures, confirm that original PCM is in vehicle (PT No. Z52*-18-881).

^ If the original PCM is installed, install an "A" suffix PCM. (Example Z52*-18-881A) and proceed to step 3.
^ If the original PCM has already been replaced with an "A" suffix PCM proceed to step 3.1

3. If PCM was needed and and has been replaced with and "A" suffix PCM and the recorded freeze frame data is within the affected ranges as indicated in the chart shown, install the EGR boost sensor noise filter per installation procedures.

Vehicles with "A" suffix PCM's installed at production (with a VIN after JM1BB141*T0322397 and production date after 10/26/95)

1. Perform diagnostic procedures for DTC P0400 as noted in service bulletin F-013/97.

2. Verify "A" suffix PCM is installed in vehicle. (Example 252-18-881A)
^ If the original PCM is installed, proceed to step 3.

3. If no cause was found when performing diagnostic procedures and the recorded freeze frame data is within the affected ranges as indicated in the chart shown, install the EGR boost sensor noise filter per installation procedures.

NOISE FILTER INSTALLATION PROCEDURE

1. Remove the rear console.

2. Remove the front console.





3. Locate the gray wire (3H wire) in the B1-01 connector and cut approximately 3cm (125 in.) from the terminal. Refer to Fig. 1.

4. Using an electric-tap, connect the cut wire to the signal wire in series.

5. Secure the noise filter with ECU harness with adhesive tape. Refer to Fig. 1.

6. Reinstall the front and rear consoles.





PARTS INFORMATION





WARRANTY INFORMATION
(Applies To Verified Customer Complaints On Vehicles Covered Under Normal Warranty. Refer To The SRT Microfiche For Warranty Term Information.)





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