Engine Controls - MIL ON/DTC P0346
ENGINEEG010-05
Title:
M.I.L. "ON" DTC P0346
Models:
'04 Camry, Highlander & Solara (V6), and
'05 Camry & Solara (V6)
February 18, 2005
Introduction
Under certain driving conditions, some 2004 model year Camry, Highlander, and Solara, and 2005 model year Camry and Solara vehicles equipped with V6 engines may exhibit a M.I.L. "ON" with the following DTC:
^ P0346 (Camshaft Position Sensor "A" Circuit Range/Performance [Bank 2])
The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to improve this condition.
NOTE:
^ Version 12.01a or later Diagnostic Tester software is required to perform this procedure.
^ Before proceeding, verify the ECM (PCM) calibration has NOT been updated by checking for the Authorized Modifications Label (shown in step 1 of the Repair Procedure).
Applicable Vehicles
^ 2004 model year Camry, Highlander, and Solara vehicles equipped with V6 engine.
^ 2005 model year Camry and Solara vehicles equipped with V6 engine produced BEFORE the Production Change Effective VINs shown below.
Production Change Information
Warranty Information
Applicable Warranty*:
This repair is covered under the Toyota Federal Emissions Warranty. This warranty is in effect for 96 months or 80,000 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.
Parts Information
Required SSTs
Calibration Identification Chart
Repair Procedure
1. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if ECM (PCM) calibration has been updated. If not the latest ECM (PCM) calibration go to step 2.
2. Connect the Diagnostic Tester to the vehicle and select CURRENT ECU CAL from the ECU REPROGRAM MAIN MENU. Determine the vehicle's current ECU calibration (see Figure 2).
- The sample screen prints seen below are the 12.01 a software version and may differ from subsequent software versions.
3. If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).
Flash Reprogram Procedure
Camry and Solara:
Flash Reprogram ECM (PCM)
1. Remove the 10A ECU-IG fuse from the Instrument Panel Junction Block assembly. This action prevents possible activation of the ABS relay, resulting in ECM Reprogramming failure.
NOTE:
ECU damage may occur if 10A fuse is NOT removed.
2. Follow the procedures outlined in TSB No. SS002-01, "ECU Flash Reprogramming Process," and flash the ECM (PCM) with new calibration file update.
3. Reinstall the 10A ECU-IG fuse in the Instrument Panel Junction Block assembly.
4. Follow the procedures outlined in TSB No. EG045-04, "Entering VIN During ECM (PCM) Replacement and/or DTC P0630," and write the VIN to the ECM (PCM).
5. Enter the required information on the Authorized Modifications Label and affix it to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.
6. The repair is complete. Test drive vehicle to confirm normal operation.
Highlander:
Flash Reprogram ECM (PCM)
1. Follow the procedures outlined in TSB No. SS002-01 , "ECU Flash Reprogramming Process," and flash the ECM (PCM) with new calibration file update.
2. Follow the procedures outlined in TSB No. EG045-04, "Entering VIN During ECM (PCM) Replacement and/or DTC P0630," and write the VIN to the ECM (PCM).
3. Enter the required information on the Authorized Modifications Label and affix it to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the MDC, P/N 00451-00001-LBL.
4. The repair is complete. Test drive vehicle to confirm normal operation.