Canada - Emissions - MIL ON/DTC P1436 Stored in ECM

Bulletin
1118

Issue Date
2002-09-11

Reference
EE-02-008

Model
Prius

Year Range
2002, 2001

Market
Canada

Component
EE

Subject:
M.I.L. "ON" P1436 - HCAC BYPASS VALVE IMPROVEMENT

Certain 2001 and 2002 model year Prius that are operated in areas where road salt is commonly used may experience a M.I.L. "ON" condition with Diagnostic Trouble Code P1436 stored in the Engine Control Module (ECM). Use the following procedure to inspect the HCAC bypass valve for smooth operation and replace the Front Pipe Assembly if any shaft binding is evident.

APPLICABLE VEHICLES: 2001 - 2002 model year Prius vehicles produced BEFORE the VIN shown below.







PRODUCTION CHANGE INFORMATION:







PARTS INFORMATION:

REPAIR PROCEDURE:
Refer to the applicable Prius Repair Manual, Volume 1.
- Follow the Fault Isolation Procedure (FIP) for DTC P1436.
- When checking the bypass valve operation per the FIP, pay particular attention at step 3 or step 5 for a sticking or binding condition when activating the actuator or rotating the valve by hand.
- If any valve binding is noted, replace the Front Exhaust Pipe Sub Assembly with the specified new part.
- Refer to the applicable Prius Repair Manual, Volume 2 for the Exhaust System Component view.







REPAIR TIME:

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.