Last Modified: 11-29-2007 1.6 D
Service Category: Engine/Hybrid System Section: Engine Control
Model Year: 2008 Model: Sequoia Doc ID: RM000000PDQ07HX
Title: 2UZ-FE ENGINE CONTROL: SFI SYSTEM: CHECK FOR INTERMITTENT PROBLEMS (2008 Sequoia)

CHECK FOR INTERMITTENT PROBLEMS

HINT:

Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.

  1. Clear the DTCs 2UZ-FE ENGINE CONTROL: SFI SYSTEM: DTC CHECK / CLEAR (2008 Sequoia) .
  2. Switch the ECM from normal mode to check mode using the Techstream 2UZ-FE ENGINE CONTROL: SFI SYSTEM: CHECK MODE PROCEDURE (2008 Sequoia) .
  3. Perform a simulation test INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) .
  4. Check and wiggle the harness(es), connector(s) and terminal(s).