Toyota Venza: ECU Power Source Circuit
DESCRIPTION
This circuit provides power for main body ECU (driver side junction block assembly) operation.
WIRING DIAGRAM
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PROCEDURE
|
1. |
CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MAIN BODY ECU (POWER SOURCE)) |
|
(a) Disconnect the 2C driver side junction block assembly connector. |
|
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(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2C-24 - Body ground |
Always |
11 to 14 V |
|
2C-30 - Body ground |
Always |
11 to 14 V |
|
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. |
CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) |
|
(a) Disconnect the 2F main body ECU (driver side junction block assembly) connectors. |
|
.png)
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2F-16 - Body ground |
Always |
Below 1 Ω |
|
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Security Indicator Light Circuit
DESCRIPTION
Even when the theft deterrent system is in the disarmed state, the security indicator
blinks due to a signal output from the immobiliser system. The security indicator
blinks continuo ...
Unlock Warning Switch Circuit
DESCRIPTION
The key unlock warning switch assembly turns on when the ignition key is inserted
into the ignition key cylinder and turns off when the ignition key is removed.
The main body ECU (driv ...
Other materials about Toyota Venza:
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL-SAFE FUNCTION
If the following malfunctions occur, the AWD control ECU will stop the
function of 4WD control system or partly change the function to control
the system.
If a malfunction occurs in the senso ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE SEAT ADJUSTER COVER CAP
(a) Remove the seat adjuster cover cap.
HINT:
Use the same procedure for the RH side and LH side.
2. REMOVE RECLINING POWER SEAT SWITCH ...
VC Output Circuit
DESCRIPTION
The ECM constantly generates 5 V of power from battery voltage supplied to the
+B (BATT) terminal to operate the microprocessor. The ECM also provides this power
to the sensors through the VC output circuit.
When the VC circuit is short-cir ...
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