Dtc P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)
Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE VSV FOR ACIS)
CHECK VSV FOR ACIS
CHECK VSV FOR ACIS (POWER SOURCE)
CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM)
CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - INTEGRATION RELAY)
DTC P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1) |
DESCRIPTION
This circuit opens and closes the Intake Air Control Valve (IACV) in response to changes in the engine load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).Text in Illustration*1
| Intake Air Control Valve Open
| *2
| Intake Air Control Valve Closed
|
DTC No.
| DTC Detection Condition
| Trouble Area
|
P0660
| The following conditions are met simultaneously for 0.5 seconds or more (2 trip detection logic):
- The voltage of terminal ACIS of the ECM is low when the VSV is off.
- The engine has been started.
| - Open or short in VSV for ACIS circuit
- Intake manifold (intake air control valve)
- ECM
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (OPERATE VSV FOR ACIS) |
Connect the intelligent tester to the DLC3.
Start the engine and turn the tester on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control.
Check if an operating noise can be heard when operating the air intake control valve using the intelligent tester.
- OK:
- Operating noise can be heard.
Check the VSV for ACIS (RAV4_ACA30 RM000003UP5001X.html).
| 3.CHECK VSV FOR ACIS (POWER SOURCE) |
Disconnect the VSV for ACIS connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
B125-1 - B125-2
| Ignition switch ON
| 11 to 14 V
|
Text in Illustration*1
| Front view of wire harness connector
(to VSV for ACIS)
|
| 4.CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM) |
Disconnect the VSV for ACIS connector.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
B125-1 - B32-38 (ACIS)
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B125-1 or B32-38 (ACIS) - Body ground
| Always
| 10 kΩ or higher
|
Text in Illustration*1
| Front view of wire harness connector
(to VSV for ACIS)
|
*2
| Front view of wire harness connector
(to ECM)
|
Reconnect the ECM connector.
Reconnect the VSV for ACIS connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR ACIS - ECM) |
|
|
| 5.CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - INTEGRATION RELAY) |
Disconnect the VSV for ACIS connector.
Remove the integration relay (EFI MAIN relay) from the engine room No. 1 relay block and disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
Tester Connection
| Condition
| Specified Condition
|
B125-2 - 1A-4
| Always
| Below 1 Ω
|
- Standard Resistance (Check for Short):
Tester Connection
| Condition
| Specified Condition
|
B125-2 or 1A-4 - Body ground
| Always
| 10 kΩ or higher
|
Text in Illustration*1
| Front view of wire harness connector
(to VSV for ACIS)
|
*2
| Front view of wire harness connector
(to Integration Relay)
|
*3
| Engine Room No. 1 Relay Block
|
Reconnect the integration relay connector.
Reinstall the integration relay.
Reconnect the VSV for ACIS connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR ACIS - INTEGRATION RELAY) |
|
|
