Toyota Venza manuals

Toyota Venza: Power Source Circuit

DESCRIPTION

1. w/o Multi-information Display

(a) This circuit is the power source circuit for the accessory meter assembly. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission.

HINT:

If the accessory meter assembly displays "1:00" when the ignition switch is turned off, then to ON again, the B terminal has a malfunction.

The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20°C (-4°F) and 60°C (140°F).

2. w/ Multi-information Display

(a) This circuit is the power source circuit for the accessory meter assembly. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is a power source mainly used for signal transmission.

HINT:

If the accessory meter assembly displays "1:00" when the ignition switch is turned off, then to ON again, the +B terminal has a malfunction.

The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20°C (-4°F) and 60°C (140°F).

WIRING DIAGRAM

1. w/o Multi-information Display


2. w/ Multi-information Display


PROCEDURE

1.

CHECK HARNESS AND CONNECTOR

(a) w/o Multi-information Display

(1) Disconnect the F2 connector.


(2) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

F2-1 (B) - Body ground

Always

11 to 14 V

F2-13 (IG+) - Body ground

Ignition switch ON

11 to 14 V

(3) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-12 (E) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Accessory Meter Assembly)

(b) w/ Multi-information Display

(1) Disconnect the F2 and F5 connectors.


(2) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

F5-1 (IG) - Body ground

Ignition switch ON

11 to 14 V

F5-9 (+B) - Body ground

Always

11 to 14 V

F2-1 (B) - Body ground

Always

11 to 14 V

F2-13 (IG+) - Body ground

Ignition switch ON

11 to 14 V

(3) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-12 (E) - Body ground

Always

Below 1 Ω

F5-16 (SGND) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Accessory Meter Assembly)

*2

Front view of wire harness connector

(to Accessory Meter Assembly )


OK

REPLACE ACCESSORY METER ASSEMBLY


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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