Engine Controls - MIL ON/DTC's P0351/P0352/P0353/P0354
T-SB-0101-09April 6, 2009
M.I.L. "ON" DTC P0351, P0352, P0353, and/or P0354
Service Category
Engine/Hybrid System
Section
Hybrid/Battery Control System
Market
USA
Applicability
Introduction
Some 2007 model year Camry Hybrid vehicles may exhibit a M.I.L. "ON" condition with Diagnostic Trouble Codes (DTCs) P0351, P0352, P0353, and/or P0354 (Ignition Coil Primary/Secondary Circuit) stored in the Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM).
The ECM/PCM logic has been improved to prevent this condition. Use the following repair procedure to address customer concerns.
NOTE
If a damaged or inoperative ignition coil assembly is found, this service bulletin may not correct the M.I.L. "ON" condition. Refer to the Repair Manual to diagnose and correct conditions related to a damaged or inoperative ignition coil assembly.
Warranty Information
APPLICABLE WARRANTY
^ This repair is covered under the Toyota Hybrid Vehicle System Warranty. This warranty is in effect for 96 months or 100,000 miles, whichever occurs first, from the vehicle's in-service date.
^ For California specification vehicles sold, registered, and operated in California, Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont, this repair is covered under the California Emission Warranty, which is in effect for 180 months or 150,000 miles, whichever occurs first, from the vehicle's in-service date.
^ Warranty application is limited to correction of a problem based upon a customer's specific complaint.
Calibration Information
Parts Information
NOTE
^ The HV ECU should NOT be replaced as part of the repair procedure.
^ Authorized Modification Labels may be ordered in packages of 25 from the Materials Distribution Center (MDC) through Dealer Daily - Dealer Support Materials Orders.
Required Tools & Equipment
NOTE
^ Additional SSTs may be ordered by calling 1-800-933-8335.
^ The GR8 Battery Diagnostic Station (P/N 00002-MCGR8) supersedes the Automatic Trickle Charger (P/N 00002-YA122-01) and Fast Battery Chargers (Associated P/N ASE6003 and Christie P/N CAPPDQ). P/N 00002-YA122-01, ASE6003, and CAPPDQ are now obsolete.
Repair Procedure
1. Review the Freeze Frame Data for DTC P0351, P0352, P0353, and/or P0354. Is the "HV Target Engine Speed" value zero?
^ YES - Go to step 2.
^ NO - This TSB does NOT apply. Diagnose per the Repair Manual.
2. Clear all DTCs and attempt to duplicate DTC P0351, P0352, P0353, and/or P0354. Re-start the vehicle and monitor engine operation. Do DTC(s) P0351, P0352, P0353, and/or P0354 reset?
^ YES - This TSB does NOT apply. Diagnose for Ignition Coil malfunction per Repair Manual instructions.
^ NO - Go to step 3.
3. 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 4.
4. Flash reprogram the HV ECU and ECM (PCM).
^ 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 located on the Technical Information System (TIS), Diagnostics - Battery
Follow the procedures outlined in TSB No. SS002-07, "Techstream ECU Flash Reprogramming Procedure", and flash the ECM (PCM) with the NEW calibration file update.
5. Place the vehicle into Ready ON mode and test drive the vehicle to confirm proper vehicle operation of the HV ECU and ECM (PCM).
6. Install the Authorized Modifications Label.
A. Using a permanent marker enter the following information on the label:
^ HV ECU 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 TSB 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.