Hybrid Systems - Red Triangle ON/DTC P0A27 Set
TSB 09-18-609/21/09
DTC P0A27 - INSTRUMENTATION WARNINGS -
REDUCED ENGINE POWER
FORD:
2005-2007 Escape Hybrid
MERCURY:
2006-2007 Mariner Hybrid
ISSUE
Some 2005-2007 Escape Hybrid vehicles built from 10/13/2003 to 12/19/2006 and Mariner Hybrid vehicles built from 6/10/2005 to 10/11/2006 may have a red triangle illuminated on the cluster accompanied by an audible chime. In addition, the message center will indicate Stop Safely Now and the Powertrain Control Module will command the vehicle to shut down. Diagnostic trouble code P0A27 for Hybrid Battery Power Off Circuit will also be present.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
This service procedure replaces Customer Satisfaction Program 07B48, which expired on 8/22/2009. Check the vehicle's repair history to determine if a 14A303 service harness has already been installed under 07B48. Do not install a second 14A303 service harness in series with a 14A303 that has been previously installed under the Customer Satisfaction Program.
Install a service harness in the High Voltage Traction Battery (HVTB), and reprogram the Battery Control Module (BCM), to eliminate the circuit that is susceptible to setting a false DTC.
Follow the installation instructions provided in the kit to install the service harness and reprogram the BCM.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited 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
091806A 2005-2007 Escape Hybrid, 2.4 Hrs.
2006-2007 Mariner Hybrid:
Install A Service Harness
In The HVTB, And
Reprogram The BCM (Do
Not Use With Any Other
Labor Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
10B759 42
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