Toyota RAV4 manuals

Toyota Sienna Service Manual: Check for intermittent problems

1. CHECK FOR INTERMITTENT PROBLEMS

HINT:

For use of the intelligent tester only: Inspect the vehicle's ECM using check mode.

Intermittent problems are easier to detect with an intelligent tester 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.

(a) Clear the DTCs (See page ES-39).

(b) Switch the ECM from normal mode to check mode using an intelligent tester (See page ES-43).

(c) Perform a simulation test (See page IN-35).

(d) Check and wiggle the harness(es), connector(s) and terminal(s) (See page IN-30).

How to proceed with troubleshooting
HINT: The intelligent tester can be used in steps 2, 3, 4, 6 and 9. 1 VEHICLE BROUGHT TO WORKSHOP 2 CONNECT INTELLIGENT TESTER TO DLC3 HINT: If the display indicates a communication fault in th ...

Basic inspection
When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out in all circuits considered to be possible causes of the problem. In many cases, by carrying out the basic ...

Other materials:

Air conditioning pressure sensor
ON-VEHICLE INSPECTION 1. INSPECT A/C PRESSURE SENSOR (a) Install the manifold gauge set. (b) Disconnect the connector from the A/C pressure sensor. (c) Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. (d) Connect t ...

How to proceed with troubleshooting
HINT:  Use these procedures to troubleshoot the power door lock control system.  The intelligent tester should be used in steps 4 and 5. 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS CHECK HINT:  In troubleshooting, confirm that the problem symptoms have ...

Lumbar support adjuster assembly
INSPECTION 1. INSPECT LUMBAR SUPPORT ADJUSTER ASSEMBLY  Check operation of the lumbar support adjuster motor.  Check if the lumbar support adjuster moves smoothly when the battery is connected to the lumbar support adjuster motor connector terminal. OK If the r ...

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