Mitsubishi Montero (2002-2004). Manual - part 659

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-333

STEP 5. Check for open circuit and short circuit to ground
between throttle position sensor connector B-05 (terminal
No. 2) and PCM connector D-135 (terminal No. 106).
Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO : Repair it. Then go to Step 12.

AK201174

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

AK200947

100

101

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105

106

107

108

109

110

111

112

113

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119

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CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-334

STEP 6. Using scan tool MB991502, check data list item 14:
Throttle Position Sensor (sub).

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) Detach the intake air hose at the throttle body.
(4) Disconnect the connector of the throttle position sensor.
(5) Use test harness special tool (MB991348) to connect only

terminals No. 1, No. 2, No. 3, and No. 4.

(6) Set scan tool MB991502 to the data reading mode for item

14, Throttle Position Sensor (sub).

• Output voltage should be between 2.2 and 2.8 volts

when the throttle valve is fully closed with your finger.

• Output voltage should be between 3.8 and 4.9 volts

when the throttle valve is fully open with your finger.

(7) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the sensor 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 : Replace the PCM. Then go to Step 12.

STEP 7. Check the throttle position sensor.
(1) Disconnect the connector B-05.

(2) Measure the resistance between throttle position sensor

side connector terminals No. 2 and No. 4

Standard value: 2

− 4 kiloohms

Q: Is the measured resistance between 2 and 4 kiloohms?

YES : Go to Step 8.
NO : Replace the throttle body ASSY. Then go to Step 12.

ACX01539

16-PIN

MB991502

AK201174

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

1 2 3 4 5

AK201512

THROTTLE POSITION
SENSOR SIDE
CONNECTOR

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-335

STEP 8. Check connector D-135 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 12.

STEP 9. Check for harness damage between throttle
position sensor connector B-05 (terminal No. 2) and PCM
connector D-135 terminal No. 106).
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO : Repair it. Then go to Step 12.

AK200947

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

AK201174

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

AK200947

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ac-336

STEP 10. Check for open circuit, short circuit to ground
and harness damage between throttle position sensor
connector B-05 (terminal No. 3) and PCM connector D-135
(terminal No. 113).
Q: Is the harness wire in good condition?

YES : Go to Step 11.
NO : Repair it. Then go to Step 12.

AK201174

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS
CONNECTOR:
COMPONENT SIDE

AK200947

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

CONNECTOR: D-135

HARNESS CONNECTOR:
COMPONENT SIDE

PCM

D-135(GR)

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