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:

Park / Neutral Position Switch Circuit
DESCRIPTION The clearance warning ECU receives the reverse or park position signal from the park / neutral position switch. WIRING DIAGRAM INSPECTION PROCEDURE 1 INSPECT CLEARANCE WARNING ECU Disconnect the C9 connector from the clearance warning ECU.  Measure the voltage ...

Cellular Phone cannot Send / Receive
INSPECTION PROCEDURE 1 CHECK BLUETOOTH SETTINGS Check if the Bluetooth settings are correct. OK: Bluetooth settings are correct. 2 CHECK CELLULAR PHONE Check if the cellular phone is Bluetooth compatible. HINT: Some versions of Bluetooth compatible cellular phones may not function ...

Outer mirror switch
Inspection 1. INSPECT OUTER MIRROR SWITCH ASSEMBLY (w/o Memory)  The L side of the left / right adjustment switch: Inspect the mirror switch resistance. Standard resistance (Left side) If the result is not as specified, replace the switch assembly.  The R side of t ...

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