Mariner 2WD V6-3.0L VIN 1 (2006)
Engine Control Module: Customer Interest
Engine Controls/Igntion - MIL ON/DTCs P0351/P0356
TSB 10-18-10
09/27/10
3.0L ENGINE - MIL ON WITH DTC P0351 THROUGH
P0356 - MULTIPLE COIL PRIMARY CIRCUIT - BUILT
ON OR BEFORE 10/03/2005
FORD:
2005-2006 Escape
MERCURY:
2005-2006 Mariner
This article supersedes TSB 09-2-6 to add a production fix date, update the Service Procedure, Part List and Service Labor Time Standards.
ISSUE
Some 2005-2006 Escape and Mariner vehicles built on or before 10/3/2005, equipped with a 3.0L engine may exhibit a malfunction indicator lamp
(MIL) on with two or more diagnostic trouble codes (DTCs) for coil on plug (COP) primary circuit faults (P0351 through P0356). This may be due to
the COP and powertrain control module (PCM) reacting to radio frequency interference from the spark plugs.
ACTION
Follow the Service Procedure to correct the condition.
SERVICE PROCEDURE
1. Check for DTC's stored in the PCM.
a. If codes P0351 through P0356 codes are stored in the PCM continue to Step 2.
b. If codes are present other than P0351 through P0356, do not continue with this article. Refer to the Powertrain Control/Emissions Diagnosis
(PC/ED) manual for normal diagnostic.
2. Replace all six (6) COPs. Refer to Workshop Manual (WSM), Section 303-01B.
3. Perform a PCM internal coil driver functionality test by running the Oscilloscope Escape PCM Driver Test (available on Integrated Diagnostic
System (IDS) version B58 or later).
4. Using IDS, select:
a. Toolbox.
b. Oscilloscope tools.
c. Escape PCM Driver Test - follow on screen instructions.
NOTE
THE OSCILLOSCOPE TEST TO CHECK PCM INTERNAL COIL DRIVER FUNCTIONALITY MUST BE PERFORMED PRIOR TO
REPLACING THE PCM.
5.
If the coil driver functionally test fails, replace the PCM. Refer to WSM, Section 303-14B.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATION
DESCRIPTION
TIME
