Toyota RAV4 manuals

Toyota Sienna Service Manual: Diagnosis system

1. DESCRIPTION

When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the intelligent tester to the vehicle and reading various data output from the vehicle's clearance warning ECU.

The clearance warning ECU records DTCs when the computer detects a malfunction in the computer itself or in its circuits.

To check the DTCs, connect the intelligent tester to the DLC3 on the vehicle. The intelligent tester enables you to erase the DTCs, activate the various actuators, and check the freeze frame data and Data List.

2. CHECK DLC3

CHECK DLC3

  1.  The ECU uses ISO 15765-4 for communication.

    The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

    If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness or connector.

CHECK DLC3

NOTICE: *: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors.

HINT: If the display shows a communication error message after connecting the intelligent tester to the DLC3 and turning the ignition switch to the ON position, there is a problem with either the vehicle or the tool (intelligent tester only).

Terminals of ECU
1. INSTRUMENT PANEL JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)  Disconnect the B6, B7 and B9 ECU connectors. Disconnect the 1A, 1C, 1K, 1L and 1P J/B connectors. Check the vol ...

DTC check / clear
1. DTC CHECK/CLEAR (USING INTELLIGENT TESTER:)  DTC check  Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position.  Read the DTCs on t ...

Other materials:

Reassembly
1. INSTALL UNDERDRIVE CLUTCH DRUM O-RING (a) Coat a new O-ring with ATF, and install it to the underdrive clutch drum. NOTICE: Make sure that the O-ring is not twisted or pinched. 2. INSTALL UNDERDRIVE CLUTCH PISTON SET (a) Coat the underdrive clutch piston with ATF, and install it t ...

Cruise Main Indicator Light Circuit
DESCRIPTION  The ECM detects a cruise control switch signal and sends it to the combination meter through CAN and BEAN. Then the CRUISE main indicator light comes on.  The CRUISE main indicator light circuit uses CAN and BEAN for communication. If there is a malfunction in ...

Removal
1. REMOVE REAR DOOR WINDOW FRAME MOULDING Remove the screw. Using a heat light, heat the rear door window frame moulding between 40 to 60 C (104 to 140 F). NOTICE: Do not heat the rear door window frame moulding excessively. Slide the rear door window frame moulding upward to r ...

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