Toyota Sienna Service Manual: Terminals of ECU

Problem symptoms table

HINT: Proceed to the troubleshooting for each circuit in the table below. Occupant Classification System Symptom Suspected area The front passenger seat condition differ ...

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 measuri ...

Other materials:

Terminals of ECU
1. CHECK DISTANCE CONTROL ECU Reference: waveform 1 HINT:  Terminal: LRDD - SGND  Gauge set: 2 V/DIV., 10 ms./DIV.  Condition: ignition switch in the ON position Reference: waveform 2 HINT:  Terminal: LRRD - SGND  Gauge set: 2 V/ ...

Oxygen Sensor Heater Control Circuit
HINT: Sensor 2 refers to the sensor mounted behind the Three-Way Catalytic Converter (TWC) and located furthest from the engine assembly. DESCRIPTION Refer to DTC P0136 (See page ES-160). HINT: When any of these DTCs are set, the ECM enters fail-safe mode. The ECM turns off the Heated ...

Cranking Holding Function Circuit
DESCRIPTION The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter until the ECM judges that the engine has started successfully. The purpose is to reduce the holding time of the ignition key. WIRING DIAGRAM Refer to DTC P0617 (See page ...