Tribute LX 2WD V6-3.0L DOHC (2001)
Engine Control Module: All Technical Service Bulletins
Engine Controls - No Crank/No Start/MIL ON/Multiple DTCs
TSB: 01-047/06
2001 - 2004 TRIBUTE - NO START, NO CRANK, OR MIL ILLUMINATION WITH ONE OR MORE DTCs PRESENT
APPLICABLE MODEL(S)/VINS
2001 - 2004 Tribute
DESCRIPTION
Some vehicles may exhibit a Powertrain Control Module (PCM) concern that results in no crank, no start, or malfunction indicator lamp (MIL) on with
one or more Diagnostic Trouble Codes (DTCs) present. There may also be intermittent or inoperative power windows, door locks, keyless entry system,
lighting, speed control, radio, instrument cluster warning lamps (possibly dimly illuminated instead of being off), or other electrical accessories. The
concern is typically more noticeable in wet and/or cold weather conditions.
This may be the result of terminal corrosion in the X134 and/or X263 connectors, or the central junction box (CJB). Terminal corrosion results in either
high resistance between the male and female terminals, or a short between two or more circuits due to bridging through any corrosion that may be
present. Corrosion in X134 connector may be the result of improper positioning/sealing of X134 connector. Corrosion in the X263 connector or the CJB
may be due to a water leak in the left hand A-Pillar area.
Customers having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
Follow the Repair Procedure to inspect and repair the connector terminals for evidence of corrosion. Repair any sources of water entry. If no signs of
corrosion or water entry are found, follow normal diagnostics.
CAUTION:
WHEN DIAGNOSING THE CAUSE OF A PCM FAILURE, IT IS CRITICAL THAT THIS INSPECTION AND REPAIR PROCEDURE BE
COMPLETED IN ITS ENTIRETY BEFORE INSTALLING A REPLACEMENT SERVICE PART.
THE POSSIBILITY EXISTS FOR A 12 VOLT SHORT TO THE 5 VOLT VREF (CIRCUIT). INSTALLATION OF A SERVICE REPLACEMENT
PCM WITHOUT ELIMINATING THE 12 VOLT SHORT WILL RESULT IN REPEAT PCM FAILURE.
Inspect and repair the following connectors:
X134 Connector:
1.
Open the hood and locate the X134 connector.
