Toyota RAV4 manuals

Toyota Sienna Service Manual: Diagnosis system

1. CHECK DLC3

Diagnosis system

(a) The vehicle's ECM uses the ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.

HINT: Connect the cable of the intelligent tester to the DLC3, turn the ignition switch to the ON position and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.

If communication is normal when the tester is connected to another vehicle, inspect the DLC3 of the original vehicle.

If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.

Diagnosis system

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.

Terminals of ecu
1. A/C AMPLIFIER (a) Waveform 1: (b) Waveform 2: (c) Waveform 3: ...

Dtc check / clear
1. DTC CHECK (SENSOR CHECK) (a) After the indicator check is completed, the system enters the DTC check mode automatically. (b) Read the codes displayed on the panel. Refer to the list of co ...

Other materials:

How to proceed with troubleshooting
1 VEHICLE BROUGHT TO WORK SHOP 2 CUSTOMER PROBLEM ANALYSIS 3 CHECK BODY MULTIPLEX COMMUNICATION SYSTEM Check for the DTC outputs. 4 DTC CHECK 5 DTC CHART 6 PROBLEM SYMPTOMS TABLE 7 TERMINAL OF ECU 8 CIRCUIT INSPECTION 9 IDENTIFICATION OF PROBLEM 10 REPAIR OR REPLACE 11 CONFIRMATION T ...

Components
REMOVAL 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 2. REMOVE FRONT BUMPER ASSEMBLY 3. REMOVE FOG LIGHT ASSEMBLY  Disengage the 2 claws  Disengage the 2 pins and remove the fog light assembly. DISASSEMBLY 1. REMOVE FOG LIGHT BULB  Turn in the dir ...

Disassembly
1. REMOVE COOLER THERMISTOR NO.1 (for Automatic Air Conditioning System) (a) Disengage the 2 claw fittings and the clamp and remove the cooler thermistor No. 1. 2. REMOVE COOLING UNIT MOTOR SUB-ASSEMBLY WITH FAN (a) Remove the 3 screws and the cooling unit motor sub-assembly w/ fan. 3. ...

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