Ignition Coil and High Tension Cables – 1999-2008 Subaru

07-60-07R
04/25/07

 

APPLICABILITY: 2000MY and Later Legacy/Outback 2.5L SOHC Vehicles
1999MY and Later Impreza and
Forester 2.5L SOHC Vehicles
SUBJECT: Ignition Coil and High Tension Cables

 

Introduction

When diagnosing for misfire code(s) P0301, P0302, P0303 and/or P0304 there is the possibility that the ignition coil and/or high tension cables could be the cause. In addition to the information published in the service manual, use the following procedure to check the ignition coil and high tension cables.

 

Production Line Change

The new style high tension cables have been used in production with the following VINs.

Model Starting Vin (approxiMate)
Impreza Sedan 6*50988
Impreza Wagon 6*80755
Forester 6*739537

 

Repair Procedure/Information

Step 1) Ignition Coil Inspection

Check the tower portion of the ignition coil for carbon tracks (leakage). If leakage is more than 5mm long, the ignition coil and high tension cables should be replaced (see Figure 1).

Figure 1

Example of leakage on ignition coil tower

Example of leakage on ignition coil tower.

 

Step 2) High Tension Cable Inspection

Check the high tension cables for carbon tracks (leakage). If leakage is evident, the high tension cables should be replaced and the ignition coil cleaned (see figure 2 and refer to Step 3).

 

Figure 2

Leakage on cable

Leakage on cable.

 

Step 3) Ignition Coil Cleaning Procedure (if carbon track is less than 5mm)

 

Part Information

The high tension cables for Impreza and Forester have changed to a silicone rubber boot which has a shiny appearance. Please note that the part numbers have not changed. The Legacy and Outback high tension cables also have a silicone rubber boot.

New Style (C)

New Style (C)

 

Old Style (ADI)

Old Style (ADI)

 

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