Canada - Engine Controls - MIL ON/Oxygen Sensor DTC's Set

Bulletin
TSB2199R

Issue Date
2005-05-16

Market
Canada

Title
M.I.L. "ON" DTC P0031, P0051, P2238 AND/OR P2241

Component
ENGINE ELECTRICAL

Models
'04 - '05 Camry (V6)

REVISION NOTICE:
July 04, 2005: Calibration Information Chart has been updated.
Previous versions of this TSB should be discarded.

Under certain driving conditions, some 2004 and 2005 model year Camry vehicles may exhibit a M.I.L. "ON" with at least one of the following DTCs:
- P0031 (Oxygen Sensor Heater Control Circuit Low [Bank 1, Sensor 1])
- P0051 (Oxygen Sensor Heater Control Circuit Low [Bank 2, Sensor 1])
- P2238 (Oxygen Sensor Pumping Current Circuit Low (for A/F Sensor) [Bank 1, Sensor 1])
- P2241 (Oxygen Sensor Pumping Current Circuit Low (for A/F Sensor) [Bank 2, Sensor 1])

The A/F sensor manufacturing process and the Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic have been modified to improve these conditions.

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 vehicles equipped with 1MZ-FE or 3MZ-FE engine.
- 2005 model year Camry vehicles equipped with 1MZ-FE or 3MZ-FE engine produced BEFORE the Production Change Effective VINs shown below.






PRODUCTION CHANGE INFORMATION:






PARTS INFORMATION:






WARRANTY INFORMATION:






REQUIRED SSTs:






CALIBRATION INFORMATION:

NOTE:
- Although the calibration description in the Calibration Update Wizard and on the Diagnostic Tester reads "04 Camry," these calibrations apply to 2004 and 2005 model year Camry vehicles produced before the Production Change Effective VINs shown in this TSB.
- 2004 model year Camry vehicles, which have been flash reprogrammed using the procedures in this TSB, will contain upgraded 2005 model year OBD II logic. Refer to the 2005 model year Camry Repair Manual information on ETAS when checking Powertrain Diagnostic Trouble Codes (DTCs) on 2004 model year Camry vehicles that have been reprogrammed.

REPAIR PROCEDURE:
1. Replace both Bank 1, Sensor 1 and Bank 2, Sensor 1 air fuel ratio sensor.






2. 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 latest ECM (PCM) calibration - go to step 3.
3. 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 are the 12.01a software version, and may differ from subsequent software versions.

NOTE:
- If Calibration ID matches "Previous Calibration ID" as shown, proceed with flash reprogramming.
- If Calibration ID matches "New Calibration ID" as shown in Calibration Identification Chart, this vehicle has already been programmed. Refer to ETAS for diagnostic procedures applicable to any stored DTCs.

4. If ECU calibration ID is not the same as the "New Calibration ID" listed previously, proceed to Flash Reprogram ECM (PCM).

FLASH REPROGRAM PROCEDURE:

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. 0941, "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. 2133, "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 PDC, P/N 00451- 00001-25.
6. Test drive to confirm normal vehicle operation.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.