Toyota Venza: Back-up Power Source Circuit
DESCRIPTION
The back-up power source circuit for the A/C amplifier is shown below. Power is supplied even when the ignition switch is turned off. The power is used for diagnostic trouble code memory, etc.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY) |
|
(a) Disconnect the A/C amplifier connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D47-21 (B) - Body ground |
Always |
11 to 14 V |
|
*1 |
Front view of wire harness connector (to A/C Amplifier) |
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
IG Power Source Circuit
DESCRIPTION
The main power source is supplied to the A/C amplifier when the ignition switch
is ON.
The power source is used for operating the A/C amplifier and servo motor, etc.
WIRING DIAGRAM
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Other materials about Toyota Venza:
Disassembly
DISASSEMBLY
PROCEDURE
1. PRECAUTION
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
disconnecting the cable from the neg ...
Brake Switch "B" Circuit High (P0724)
DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling when brakes
are suddenly applied while driving in lock-up condition.
When the brake pedal is depressed, the stop light switch sends a signal to the
ECM. Then the ECM cancels t ...
Precaution
PRECAUTION
1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
After the ignition switch is turned off, the radio and display receiver
assembly records various types of memory and settings. As a result, after
turning ...
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