Engine Controls - MIL ON With DTC P1235 Set

S-SB-0036-12

December 10, 2012

MIL "ON" DTC P1235

Service Category
Engine/Hybrid System

Section
Engine Control

Market
USA





Applicability

Introduction

Some 2013 model year Scion FR-S vehicles may exhibit a MIL "ON" condition with Diagnostic Trouble Code (DTC) P1235 (High Pressure Fuel Pump Circuit). The Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been revised to address this condition. Use the following repair procedure for ECM (PCM) reprogramming.

Production Change Information





This bulletin applies to vehicles produced BEFORE the Production Change Effective VIN shown.





Warranty Information





Parts Information





Calibration Information








Required Tools & Equipment

Repair Procedure

1. Confirm DTC P1235 is set.





2. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if the ECM (PCM) calibration has been updated. If the calibration ID listed is NOT the latest ECM (PCM) calibration - go to step 3.

3. Flash reprogram the ECM (PCM).

NOTE

^ The GR8 Battery Diagnostic Station MUST be used in Power Supply Mode to maintain battery voltage at 13.5 volts while flash reprogramming the vehicle.

^ For details on how to use the GR8 Battery Diagnostic Station, refer to the GR8 Instruction Manual located on the Technical Information System (TIS), Diagnostics - Tools & Equipment - Battery Diagnostics.

Follow the procedures outlined in Service Bulletin No. S-SB-0003-10 "Techstream ECU Flash Reprogramming Procedure", and flash the ECM (PCM) with the NEW calibration file update.

4. Install the Authorized Modifications Label.

A. Using a permanent marker enter the following information on the label:

^ ECM part number [Refer to the Parts Information section for the CURRENT PART NUMBER]

^ Calibration ID(s) [Refer to the Calibration Identification Chart for the NEW CALIBRATION ID]

^ Dealer Code

^ Repair Date

^ Change Authority [This bulletin number]

B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.

5. Start the engine and warm it up to normal operating temperature and test drive to confirm proper vehicle operation.

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