2ZR-FE ENGINE CONTROL SFI SYSTEM P0660 Intake Manifold Tuning Valve Control Circuit / Open (Bank 1) | Toyota Corolla/Altis NZE17/ZRE17 2017 Service Manual

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).

0.583,2.5 0.417,2.5 0.417,2.5 0.667,1.833 false 0.323,0.25 0.406,0.25 0.406,0.25 0.573,0.5 false 0.167,0.177 0.479,0.333 0.313,0.156 10 false *1 0.656,2.427 0.969,2.583 0.313,0.156 10 false *2 3,0.219 3.313,0.375 0.313,0.156 10 false *a 4.969,0.24 5.281,0.396 0.313,0.156 10 false *b

*1	Duty Vacuum Switching Valve (for Acoustic Control Induction System)	*2	Intake Air Control Valve
*a	Intake Air Control Valve Open	*b	Intake Air Control Valve Closed

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory
P0660	Intake Manifold Tuning Valve Control Circuit / Open (Bank 1)	Open or short in duty vacuum switching valve (for acoustic control induction system) circuit for 0.5 seconds or more (2 trip detection logic)	· Open or short in duty vacuum switching valve (for acoustic control induction system) circuit · Duty vacuum switching valve (for acoustic control induction system) · ECM	Comes on	DTC stored

WIRING DIAGRAM

0.688,2.531 1.76,2.729 1.073,0.198 10 false Battery 0.49,1.698 1.563,1.896 1.073,0.198 10 false FL MAIN 0.771,0.781 1.844,0.979 1.073,0.198 10 false EFI-MAIN 1.906,1.323 2.979,1.521 1.073,0.198 10 false EFI-MAIN 1.792,0.51 1.958,0.74 0.167,0.229 10 false 5 2.583,0.51 2.75,0.74 0.167,0.229 10 false 3 5,0.531 5.167,0.76 0.167,0.229 10 false 1 1.802,0.865 1.969,1.094 0.167,0.229 10 false 2 2.885,0.76 3.958,0.958 1.073,0.198 10 false EFI NO. 2 3.625,0.958 4.698,1.156 1.073,0.198 10 false B42 3.615,1.135 5.531,1.719 1.917,0.583 10 false Duty Vacuum Switching Valve (for Acoustic Control Induction System) 3.875,0.531 4.042,0.76 0.167,0.229 10 false 2 2.573,0.854 2.74,1.083 0.167,0.229 10 false 1 5.448,0.448 5.75,0.667 0.302,0.219 10 false 62 5.406,0.615 5.708,0.833 0.302,0.219 10 false B64 5.417,2.708 5.719,2.927 0.302,0.219 10 false A40 5.438,2.531 5.74,2.75 0.302,0.219 10 false 46 5.76,0.521 6.188,0.76 0.427,0.24 10 false ACIS 5.76,2.604 6.188,2.844 0.427,0.24 10 false MREL 6.063,3.156 6.49,3.396 0.427,0.24 10 false ECM

CAUTION / NOTICE / HINT

NOTICE:: Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:: Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1.PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR INTAKE CONTROL)

2.76,1.281 2.594,1.281 2.594,1.281 2.427,0.948 false 5.948,1.281 5.781,1.281 5.781,1.281 5.615,0.948 false 1.74,0.885 1.51,0.719 1.51,0.719 1.344,0.719 false 1.635,1.115 1.406,0.948 1.406,0.948 1.24,0.948 false 4.938,0.896 4.708,0.729 4.708,0.729 4.542,0.729 false 4.823,1.115 4.594,0.948 4.594,0.948 4.427,0.948 false 0.771,0.156 1.083,0.354 0.313,0.198 10 false *a 1.073,0.854 1.385,1.052 0.313,0.198 10 false *c 1.177,0.625 1.49,0.823 0.313,0.198 10 false *d 2.802,1.188 3.115,1.385 0.313,0.198 10 false *e 4,0.135 4.313,0.333 0.313,0.198 10 false *b 4.833,0.323 5.146,0.521 0.313,0.198 10 false *f 1.438,0.333 1.75,0.531 0.313,0.198 10 false *f 1.156,1.313 1.469,1.51 0.313,0.198 10 false *f 6.063,0.677 6.375,0.875 0.313,0.198 10 false *f 4.26,0.854 4.573,1.052 0.313,0.198 10 false *c 4.375,0.635 4.688,0.833 0.313,0.198 10 false *d 5.99,1.188 6.302,1.385 0.313,0.198 10 false *e

*a	Duty Vacuum Switching Valve (for Acoustic Control Induction System) is ON	*b	Duty Vacuum Switching Valve (for Acoustic Control Induction System) is OFF
*c	Port F	*d	Port E
*e	Air Filter	*f	Air

a.

Disconnect the vacuum hose from the duty vacuum switching valve (for acoustic control induction system).

b.

Connect the GTS to the DLC3.

c.

Turn the ignition switch to ON.

d.

Turn the GTS on.

e.

Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.

Powertrain > Engine and ECT > Active Test

Tester Display
Activate the VSV for Intake Control

50004 234 3

f.

Operate the duty vacuum switching valve (for acoustic control induction system).

g.

Check the duty vacuum switching valve (for acoustic control induction system) air flow when switching the duty vacuum switching valve (for acoustic control induction system).

OK:

Activate the VSV for Intake Control	Specified Condition
ON	Air from port E flows out through port F
OFF	Air from port E flows out through air filter

Result:

Proceed to
OK
NG

OK

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS

NG

2.INSPECT DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM)

a.

Inspect the duty vacuum switching valve (for acoustic control induction system).

Click hereEngine / Hybrid System>2ZR-FE INTAKE / EXHAUST>VACUUM SWITCHING VALVE(for ACIS)>INSPECTION

Result:

Proceed to
OK
NG

OK

3.CHECK TERMINAL VOLTAGE (POWER SOURCE OF DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM))

NG

REPLACE DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM)

Click hereEngine / Hybrid System>2ZR-FE INTAKE / EXHAUST>VACUUM SWITCHING VALVE(for ACIS)>REMOVAL

3.CHECK TERMINAL VOLTAGE (POWER SOURCE OF DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM))

0.521,2.031 1.01,2.323 0.49,0.292 0.25,0.198 0.438,0.385 0.188,0.188 10 false *a 0.615,2.094 1.042,2.26 0.427,0.167 10 false B42

*a	Front view of wire harness connector (to Duty Vacuum Switching Valve (for Acoustic Control Induction System))

a.

Disconnect the duty vacuum switching valve (for acoustic control induction system) connector.

b.

Turn the ignition switch to ON.

c.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
B42-2 - Body ground	Ignition switch ON	11 to 14 V

Result:

Proceed to
OK
NG

OK

4.CHECK HARNESS AND CONNECTOR (DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM) - ECM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM))

4.CHECK HARNESS AND CONNECTOR (DUTY VACUUM SWITCHING VALVE (FOR ACOUSTIC CONTROL INDUCTION SYSTEM) - ECM)

a.

Disconnect the duty vacuum switching valve (for acoustic control induction system) connector.

b.

Disconnect the ECM connector.

c.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
B42-1 - B64-62 (ACIS)	Always	Below 1 Ω
B42-1 or B64-62 (ACIS) - Body ground and other terminals	Always	10 kΩ or higher

Result:

Proceed to
OK
NG

OK

REPLACE ECM

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>ECM>REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR