Toyota Sienna Service Manual: Terminals of ECU

Initialization

1. ZERO POINT CALIBRATION NOTICE: Make sure that the front passenger seat is not occupied before performing the operation. HINT: Perform the zero point calibration and sensitivity check if any o ...

Diagnosis system

1. CHECK DLC3  The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and meets the ISO 15765-4 format. NOTICE: *: Before mea ...

Other materials:

Removal
1. REMOVE INSTRUMENT CLUSTER FINISH PANEL CENTER NO.1 (See page IP-8) 2. REMOVE INSTRUMENT CLUSTER FINISH PANEL CENTER NO.2 3. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY HINT: (See page AX-146 for U151E, AX-146 for U151F) 4. REMOVE INSTRUMENT CLUSTER FINISH PANEL ASSEMBLY CENTER (See page IP-9) 5 ...

On-vehicle inspection
1. INSPECT CURTAIN SHIELD AIRBAG ASSEMBLY (VEHICLE NOT INVOLVED IN COLLISION)  Perform a diagnostic system check. With the curtain shield airbag assembly installed on the vehicle, perform a visual check. If there are any defects as mentioned below, replace the front pillar garn ...

Insufficient Coolant Temperature for Closed Loop Fuel Control
DTC P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control DESCRIPTION Refer to DTC P0115 DTC No. DTC Detection Condition Trouble Area P0125 Engine coolant temperature (ECT) does not reach closed-loop enabling temperature for 20 minutes (t ...