Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Window / Glass / Window Defogger System / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

(a) Disconnect the D47 air conditioning amplifier assembly connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
D47-1 (IG+) - D47-14 (GND)	Y - W	Power source (IG)	Ignition switch ON	11 to 14 V
D47-1 (IG+) - D47-14 (GND)	Y - W	Power source (IG)	Ignition switch off	Below 1 V
D47-21 (B) - D47-14 (GND)	V - W	Power source (Back-up)	Always	11 to 14 V
D47-14 (GND) - Body ground	W - Body ground	Ground	Always	Below 1 Ω

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

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
D47-18 (D) - D47-14 (GND)	G - W	Rear defogger signal	Ignition switch ON, rear window defogger switch off	11 to 14 V
D47-18 (D) - D47-14 (GND)	G - W	Rear defogger signal	Ignition switch ON, rear window defogger switch on	Below 1 V
D47-37 (LIN1) - D47-14 (GND)	SB - W	LIN communication line	Ignition switch ON	Pulse generation

If the result is not as specified, the air conditioning amplifier assembly may have a malfunction.

2. CHECK AIR CONDITIONING CONTROL ASSEMBLY

(a) Disconnect the E3 air conditioning control assembly connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
E3-4 (IG+) - E3-5 (GND)	GR - W	Power source (IG)	Ignition switch ON	11 to 14 V
E3-4 (IG+) - E3-5 (GND)	GR - W	Power source (IG)	Ignition switch off	Below 1 V
E3-5 (GND) - Body ground	W - Body ground	Ground	Always	Below 1 Ω

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

(d) Check for pulses according to the value(s) in the table below.

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
E3-2 (LIN1) - E3-5 (GND)	SB - W	LIN communication line	Ignition switch ON	Pulse generation

If the result is not as specified, the air conditioning control assembly may have a malfunction.

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 lis ...

Data List / Active Test

DATA LIST / ACTIVE TEST 1. ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrus ...

Other materials about Toyota Venza:

High Temperature Adjustment
HIGH TEMPERATURE ADJUSTMENT PROCEDURE 1. ADJUST FLUID LEVEL AT HIGH TEMPERATURE CAUTION: Use caution while the engine is idling and the cooling fan is operating. Be careful not to burn yourself when the automatic transaxle fluid temperature ...

Utility vehicle feature
• Specific design characteristics give it a higher center of gravity than ordinary passenger cars. This vehicle design feature causes this type of vehicle to be more likely to rollover. And, utility vehicles have a significantly higher rollover rate th ...

Illumination Circuit
DESCRIPTION Power is supplied to the radio and display receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: The vehicle ...