Mitsubishi Montero (2002-2004). Manual - part 713

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-549

DTC P0660: Intake Manifold Tuning Solenoid Circuit Malfunction

WHITE-

BLA

CK

WHITE-

BLA

CK

GREEN-WHITE

AK201144

RED

MFI RELAY

BATTERY

4

2

1

3 4

1 2

B-22X

2

4

3

1

POWERTRAIN
CONTROL
MODULE (PCM)

INTAKE MANIFOLD
TUNING SOLENOID

B-04

(MU802722)

Intake Manifold Tuning 

Solenoid Circuit

1

2

1

2

3

5

6 7 8 9

4

20

21 22

232425

2627

10111213

14 15

16 1718

19

D-132

(MU803802)

AK200970AB

B-04(B)

CONNECTOR: B-04

VARIABLE 
INDUCTION 
CONTROL 
SOLENOID

AK201038

CONNECTOR: D-132

AB

PCM

D-132(GR)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-550

.

CIRCUIT OPERATION

• Power to the intake manifold tuning solenoid 

power is supplied from the MFI relay (terminal 
No. 1).

• The PCM controls ground intake manifold tuning 

solenoid by turning the power transistor in the 
PCM "ON" and "OFF".

.

TECHNICAL DESCRIPTION

• To judge if there is open circuit in the intake man-

ifold tuning solenoid drive circuit, PCM measures 
the surge voltage of the intake manifold tuning 
solenoid coil.

• The PCM drives the intake manifold tuning sole-

noid. After the solenoid is turned off, the PCM  
will check if the solenoid coil produces a surge 
voltage of 2 V or more.

.

DTC SET CONDITIONS

Check Conditions

• Engine is being cranked.

• Battery positive voltage is at between 10 and 16 

volts.

Judgment Criteria

• The intake manifold tuning solenoid coil surge 

voltage (battery positive voltage + 2 volts) is not 
detected for 0.2 second.

• The PCM monitors for this condition once during 

the drive cycle.

Check Conditions

• Battery positive voltage is at between 10 and 16 

volts.

• Intake manifold tuning solenoid is ON.

• More than 1 second has elapsed after the above 

mentioned conditions have been met. 

Judgment Criteria

• The intake manifold tuning solenoid coil surge 

voltage (battery positive voltage + 2 volts) is not 
detected for 1 second. When the intake manifold 
tuning solenoid is turned OFF.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are: )

• Intake manifold tuning solenoid failed.

• Open or shorted intake manifold tuning solenoid 

circuit, or loose connector.

• PCM failed. 

AK201039

MFI RELAY

B-22X

AB

CONNECTOR: B-22X

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-551

DIAGNOSIS

Required Special Tool:

• MB991502: Scan Tool (MUT-II)

STEP 1. Using scan tool MB991502, check actuator test 
item 11: Variable Induction control Solenoid.

CAUTION

To prevent damage to scan tool MB991502, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the actuator test mode for item 

11, Intake manifold tuning solenoid.

• An operation sound should be heard and vibration 

should be felt when the intake manifold tuning solenoid 
is operated.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points 

P.00-6

.

NO :  Go to Step 2.

STEP 2. Check connector B-04 at the intake manifold 
tuning solenoid for damage.
Q: Is the connector in good condition?

YES : Go to Step 3.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 12.

ACX01539

16-PIN

MB991502

AC

AK200971

1

2

AB

HARNESS 
CONNECTOR: 
COMPONENT 
SIDE

CONNECTOR: B-04

B-04(B)

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-552

STEP 3. Check the intake manifold tuning solenoid.
(1) Disconnect the intake manifold tuning solenoid connector 

B-04.

(2) Measure the resistance between intake manifold tuning 

solenoid side connector terminal No. 1 and No. 2.

Standard value: 29 

− 35 ohms [at 20°C (68°F)]

Q: Is the resistance between 29 and 35 ohms [at 20

°C 

(68

°F)]?

YES : Go to Step 4.
NO :  Replace the intake manifold tuning solenoid. Then go 

to Step 12.

STEP 4. Measure the power supply voltage at intake 
manifold tuning solenoid harness side connector B-04.
(1) Disconnect the connector B-04 and measure at the harness 

side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal No. 1 and ground.

• Voltage should be battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts) 

present?
YES : Go to Step 6.
NO :  Go to Step 5.

AK200971

1

2

AB

HARNESS 
CONNECTOR: 
COMPONENT 
SIDE

CONNECTOR: B-04

B-04(B)

AK201425

AK200971

1

2

AB

HARNESS 
CONNECTOR: 
COMPONENT 
SIDE

CONNECTOR: B-04

B-04(B)

AK103038

1

2

B-04 HARNESS 
CONNECTOR: 
COMPONENT SIDE

AC