Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Lighting (int) / Lighting System / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 2A and 2F main body ECU (driver side junction block assembly) connectors.

(b) Measure the voltage and resistance according to the value(s) in the table below.

Standard Voltage

Symbols	Wiring Color	Terminal Description	Condition	Specified Condition
2A-1 - Body ground	B - Body ground	Battery power supply	Always	11 to 14 V

Standard Resistance

Symbols	Wiring Color	Terminal Description	Condition	Specified Condition
2F-16 - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Standard Voltage

Symbols	Wiring Color	Terminal Description	Condition	Specified Condition
2F-5 (LSR) - Body ground	Y - Body ground	Rear door unlock detection switch LH or RH input	Rear door LH and RH locked	Pulse generation
2F-5 (LSR) - Body ground	Y - Body ground	Rear door unlock detection switch LH or RH input	Rear door LH or RH unlocked	Below 1 V
2K-9 (ILE)*1 - Body ground	R - Body ground	Transponder key amplifier illumination drive output	Illumination on	Below 1 V
2K-9 (ILE)*1 - Body ground	R - Body ground	Transponder key amplifier illumination drive output	Illumination off	11 to 14 V
2O-5 (LSR) - Body ground	BR - Body ground	Rear door unlock detection switch LH or RH input	Rear door LH and RH locked	Pulse generation
2O-5 (LSR) - Body ground	BR - Body ground	Rear door unlock detection switch LH or RH input	Rear door LH or RH unlocked	Below 1 V
2O-19 (LCTY) - Body ground	R - Body ground	Rear door courtesy light switch LH input	Rear door LH open	Below 1 V
2O-19 (LCTY) - Body ground	R - Body ground	Rear door courtesy light switch LH input	Rear door LH closed	Pulse generation
2R-5 (ILE) - Body ground	P - Body ground	Interior lights drive output	Interior lights on	Below 1 V
2R-5 (ILE) - Body ground	P - Body ground	Interior lights drive output	Interior lights off	11 to 14 V
2R-7 (DOMR) - Body ground	W - Body ground	DOME CUT relay drive output	DOME CUT relay off	Below 1 V
2R-7 (DOMR) - Body ground	W - Body ground	DOME CUT relay drive output	DOME CUT relay on	11 to 14 V
D49-7 (RCTY) - Body ground	GR - Body ground	Rear door courtesy light switch RH input	Rear door RH open	Below 1 V
D49-7 (RCTY) - Body ground	GR - Body ground	Rear door courtesy light switch RH input	Rear door RH closed	Pulse generation
D49-21 (PCTY) - Body ground	V - Body ground	Front passenger side door courtesy light switch input	Front passenger side door open	Below 1 V
D49-21 (PCTY) - Body ground	V - Body ground	Front passenger side door courtesy light switch input	Front passenger side door closed	Pulse generation
D49-25 (BCTY) - Body ground	GR - Body ground	Back door courtesy switch input	Back door open	Below 1 V
D49-25 (BCTY) - Body ground	GR - Body ground	Back door courtesy switch input	Back door closed	Pulse generation
D49-27 (LSWP) - Body ground	P - Body ground	Front passenger side door unlock detection switch input	Front passenger side door locked	Pulse generation
D49-27 (LSWP) - Body ground	P - Body ground	Front passenger side door unlock detection switch input	Front passenger side door unlocked	Below 1 V
D50-9 (LSWD) - Body ground	P - Body ground	Driver side door unlock detection switch input	Driver side door locked	Pulse generation
D50-9 (LSWD) - Body ground	P - Body ground	Driver side door unlock detection switch input	Driver side door unlocked	Below 1 V
D50-24 (DCTY) - Body ground	V - Body ground	Driver side door courtesy light switch input	Driver side door open	Below 1 V
D50-24 (DCTY) - Body ground	V - Body ground	Driver side door courtesy light switch input	Driver side door closed	Pulse generation

If the result is not as specified, the main body ECU (driver side junction block assembly) may have a malfunction.

*1: w/o Smart Key System

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order ...

Diagnosis System

DIAGNOSIS SYSTEM 1. DESCRIPTION (a) Lighting system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check ...

Other materials about Toyota Venza:

Operation Check
OPERATION CHECK 1. CHECK BASIC OPERATION (a) Conditions necessary for the power back door to open: The power back door main switch is off (switch is not pressed). The back door is unlocked (except wireless operation). The vehicle speed is 3 k ...

Removal
REMOVAL PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system. NOTICE: When disconnecting the cable, some systems ne ...

Steering Angle Sensor Initialization Incomplete (C1439/31,C1445/31)
DESCRIPTION The skid control ECU acquires the steering angle sensor zero point every time the ignition switch is turned to ON and the vehicle is driven at 50 km/h (31 mph) or more for approximately 30 seconds. The ECU also stores previous zero points. Wa ...