Canada - Ignition System - MIL ON/Misfire DTC's Set

Bulletin
2003

Issue Date
May 06, 2004

Market
Canada

Title:
M.I.L. "ON" ENGINE MISFIRE DTC P0300, P0301, P0302, P0303, P0304, P0305 OR P0306

Model
'04 Camry, Sienna and Solara

MECHANICAL Some 2004 model year Camry, Sienna and Solara vehicles equipped with the 3MZ-FE V6 engine may exhibit a M.I.L. "ON" condition with one of the following Diagnostic Trouble Codes stored as a result of ignition coil manufacturing issues:

- P0300 (Multiple/Random Misfire).
- P0301 (Misfire #1 Cylinder).
- P0302 (Misfire #2 Cylinder).
- P0303 (Misfire #3 Cylinder).
- P0304 (Misfire #4 Cylinder).
- P0305 (Misfire #5 Cylinder).
- P0306 (Misfire #6 Cylinder).

APPLICABLE VEHICLES:
- 2004 model year Camry, Sienna and Solara vehicles equipped with 3MZ-FE engines produced BEFORE the Production Change Effective VINs shown below.







PRODUCTION CHANGE INFORMATION:







WARRANTY INFORMATION:







PARTS INFORMATION:







REQUIRED SSTs:

REPAIR PROCEDURE:
1. Confirm if vehicle is currently misfiring, running rough or hesitating.
If YES -- Go to Step 2
- If NO -- Review Freeze Frame Data and attempt to operate vehicle under similar driving conditions -- see note below for information that makes it more likely to duplicate misfire.







NOTE:
The following activities will turn off misfire detection:
- Changing engine RPM greater than 150 RPM.
- Changing throttle position quickly.
Misfire duplication can be duplicated most readily when the engine speed and throttle angle are held nearly constant for at least 2 minutes.







2. Confirm if misfire is currently occurring on cylinder(s) identified by DTC(s) using the Diagnostic Tester while engine is idling.

Is the DTC identified cylinder misfiring?

If YES -- Go to Step 3
If NO -- Follow normal diagnostics for applicable DTC. See applicable 2004 Model Repair Manual on ETAS:
Section: Diagnostics:
Subsection: SFI; P030#.

3. Swap suspect ignition coil(s) from cylinder that is misfiring to cylinder that is not misfiring.
4. Confirm using Diagnostic Tester that misfire is now occurring in cylinder that has suspect ignition coil(s). Has misfire followed swapped ignition coil(s)? If YES -- Replace ignition coil(s) and go to Step 5.

If NO -- Follow normal diagnostics. See applicable 2004 Model Repair Manual on ETAS:
Section: Diagnostics:
Subsection: SFI; P030#.

5. Confirm misfire has been eliminated (0% at all times) using Diagnostic Tester while engine is idling.

NOTE:
If Misfire % is any value other than 0% at any time then that cylinder is misfiring.

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.