Mariner 2WD L4-2.3L VIN H Hybrid (2006)
Engine Control Module: Customer Interest
Engine Controls - Red Triangle ON/DTC P1A0C Set
TSB 09-19-12
10/05/09
RED TRIANGLE ON AND STOP SAFELY NOW
MESSAGE - DTC P1AOC
FORD:
2005-2008 Escape Hybrid
MERCURY:
2006-2008 Mariner Hybrid
This article supersedes TSB 9-17-9 to update the IDS version.
ISSUE
Some 2005-2008 Escape Hybrid and 2006-2008 Mariner Hybrid vehicles may exhibit an intermittent Red Triangle on and Stop Safely Now message
displayed on the message center, accompanied by a sudden RPM loss/no start with a diagnostic trouble code (DTC) P1A0C. Vehicles may exhibit this
symptom on the first start of the morning or after an extended idle. The symptom will clear on the next key cycle.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
Using the Integrated Diagnostic System (IDS) scan tool:
1. Access and monitor the LOS_STRT parameter identification (PID) in the powertrain control module (PCM).
a. If the LOS_STRT PID indicates YES, perform Step 2.
b. If the LOS_STRT PID indicates NO, the DTC P1A0C may be the result of a 12 volt system fault. Performing the calibration update in Step 2 will
not correct a 12 volt system fault. Follow Powertrain Control Emission Diagnostics (PC/ED) for DTC P1A0C.
2.
Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 62.14 or higher and 63.02 or higher. Calibration files
are not included on DVD 2009.9. Calibration files may also be obtained at the website. The calibration contains a sludge compensation strategy for
the throttle body.
3. Turn the key off to re-initialize the PCM. This will allow the sludge compensation strategy to learn.
4. With the vehicle in park or neutral and the climate control system set to DEFROST, start the engine and allow it to reach normal operating
temperature (greater than 170 °F (77 °C) coolant temperature). Run it an additional 5 minutes to allow sufficient learning time.
5. While the engine is running, using IDS datalogger or equivalent, check the PID value of ETC_TRIM.
a. If ETC_TRIM value is 3.5 degrees and/or DTC P115SE is present, then replace the electronic throttle body (ETB), following Workshop Manual
(WSM), Section 303-04C.
b. If ETC_TRIM value is less than 3.5 degrees and DTC P115SE is not present, but driveability concerns persist, the ETB is not the likely cause of
the concern and replacement is not necessary. Continue with normal PC/ED diagnostics.
OTHER APPLICABLE ARTICLES: 09-08-09
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
091912A
2005-2008 Escape Hybrid,
0.4 Hr.
2006-2008 Mariner Hybrid:
Check For DTCs And
Reprogram The PCM,
Includes Time To Monitor
PIDS (Do Not Use With