Toyota RAV4 manuals

Toyota Sienna Service Manual: Diagnosis system



  1.  The ECU uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.


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.

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

HINT: If the display shows an error message after having connected the cable of the intelligent tester to the DLC3, turned the ignition switch to the ON position, and operated the tester, there is a problem on either the vehicle side or the tool side.

Terminals of ECU
1. COMBINATION METER ASSEMBLY *1: with Power Rear No. 2 Seat with Stowing Function *2: with Theft Deterrent System  Waveform 1 (Reference) : Using an oscilloscope: OK ...

Data list / active test
1. DATA LIST Using the intelligent tester to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusiv ...

Other materials:

Communication Error from VSC to ECM
DTC P1630 Communication Error from VSC to ECM DTC U0122 Lost Communication with Vehicle Dynamics Control Module DESCRIPTION The skid control ECU sends signals such as cruise control cancel demand signals and brake operation demand (from ECM) response signals to the ECM when the dynamic laser ...

System limits
Detection range The detection capacity of the system and the automatic braking capacity are limited. Two-wheeled vehicles for instance might not be detected. Deceleration The system does not decelerate in the following situations: For pedestrians or similarly slow-moving road users. For red tr ...

PARTS LOCATION On-vehicle inspection 1. INSPECT INTEGRATION CONTROL & PANEL ASSEMBLY  Disconnect the A9 connector.  Measure the voltage according to the value(s) in the table below. Standard voltage Measure the resistance according to the value(s) in the ...

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