Toyota Sienna Service Manual: Diagnosis system

Toyota Sienna Service Manual / Door lock / Key reminder warning system / Diagnosis system

1. CHECK DLC3

CHECK DLC3

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

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.

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

CHECK DLC3

Connect the cable of the intelligent tester to the DLC3, turn the ignition switch to the ON position and attempt to use the intelligent tester. If the screen displays a communication error message, a problem exists in the vehicle side of the tester side.

HINT:

If communication is normal when the tool is connected to another vehicle, inspect the DLC3 on the original vehicle.
If communication is still impossible when the tool is connected to another vehicle, the problem is probably in the tool itself. Consult the Service Department listed in the tool's instruction manual.

Terminals of ECU

1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU) Disconnect the B6, 1C, 1K and 1L J/B connectors. Measure the voltage and resistance according to the value(s) in th ...

Data list / active test

1. READ DATA LIST HINT: Using the intelligent tester's DATA LIST allows switch, actuator and other item values to be read without removing any parts. Reading the DATA LIST early in troubleshootin ...

Other materials:

Installation
1. INSTALL FRONT SUSPENSION ARM SUBASSEMBLY LOWER NO.1 LH (a) Install the front lower arm bush stopper to the front suspension arm sub-assembly lower No.1 LH. (b) Install the bolt and nut to the rear side of the front suspension arm sub-assembly lower No.1 LH. Torque: 206 N*m (2,100 kgf ...

On-vehicle inspection
1. INSPECT MASS AIR FLOW METE NOTICE: Perform the mass air flow (MAF) meter inspection by following the procedures below. Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) are not within the normal operating range or there is fore ...

License plate light assembly
COMPONENTS REMOVAL 1. REMOVE BACK DOOR GARNISH CENTER 2. REMOVE BACK DOOR SIDE GARNISH LH 3. REMOVE BACK DOOR SIDE GARNISH RH 4. REMOVE BACK DOOR STRAP COVER 5. REMOVE BACK DOOR PULL STRAP 6. REMOVE BACK DOOR TRIM BOARD ASSEMBLY 7. REMOVE BACK DOOR GARNISH SUB-ASSEMBLY OUTSIDE 8. RE ...