Mitsubishi Montero (2004+). Manual - part 309

 

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Mitsubishi Montero (2004+). Manual - part 309

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-723

STEP 5. Check for short circuit to ground and harness 
damage between throttle actuator control motor connector 
B-05 (terminal No.  5) and PCM connector D-136 (terminal 
No. 141).
Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO :  Repair it. Then go to Step 7.

STEP 6. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is DTC P2101 set?

YES : Replace the PCM. Then go to Step 7.
NO :  It can be assumed that this malfunction is intermittent. 

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

P.00-6

.

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

AK201170

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

CONNECTOR: D-136

PCM

D-136(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

AK302970

AB

MB991911

MB991824

MB991827

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-724

STEP 7. Using scan tool MB991958, read the diagnostic 
trouble code (DTC).
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is DTC P2101 set?

YES : Retry the troubleshooting.
NO :  The inspection is complete.

DTC P2102: Throttle Actuator Control Motor Circuit (Shorted Low)

AK302970

AB

MB991911

MB991824

MB991827

AK201462

GREEN-

WHITE

GREEN-

YELL

O

W

B-05

133

6

THROTTLE
ACTUATOR
CONTROL
MOTOR

POWERTRAIN
CONTROL
MODULE

141

5

6

1 2 3 4 5

D-136

(MU803801)

121122

123

125126127128129 130 131 132

134135

136 137 138 139 140

142143

144

145

124

133

141

146

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-725

.

CIRCUIT OPERATION

• Controls the current that is applied from the PCM 

(terminals No. 133, No. 141) to the throttle actua-
tor control motor (terminals No. 5, No. 6).

.

TECHNICAL DESCRIPTION

• PCM varies the direction and the amperage of 

the current that is applied to the throttle actuator 
control motor in order to control the opening of 
the throttle valve.

.

DESCRIPTIONS OF MONITOR METHODS
Motor intelligent power device detects shorted-low 

malfunction.

.

MONITOR EXECUTION
Continuous

.

MONITOR EXECUTION CONDITIONS (Other 
monitor and Sensor)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

DTC SET CONDITIONS

Check Condition

• Battery positive voltage is higher than 8.3 volts.

Judgement Criteria

• Throttle actuator control motor current is 12 

amperes or higher for 0.8 second.

.

OBD-II DRIVE CYCLE PATTERN
None.

.

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

• Throttle actuator control motor failed.

• Shorted throttle actuator control motor circuit or 

connector damage.

• PCM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

AK201173AC

THROTTLE 
ACTUATOR 
CONTROL 
MOTOR 

AK201038AI

CONNECTOR: D-136

PCM

D-136(GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-726

STEP 1. Check connector B-05 at throttle actuator control 
motor for damage.
Q: Is the connector in good condition?

YES : Go to Step 2.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 7.

STEP 2. Check the throttle actuator control motor.
(1) Disconnect the connector B-05.

(2) Measure the resistance between throttle actuator control 

motor side connector terminals No. 5 and No. 6.

Standard value: 0.3 

− 100 ohms

Q: Is the measured resistance between 0.3 and 100 ohms?

YES : Go to Step 3.
NO :  Replace the throttle body ASSY. Then go to Step 7.

STEP 3. Check connector D-136 at PCM for damage.
Q: Is the connector in good condition?

YES : Go to Step 4.
NO :  Repair or replace it. Refer to GROUP 00E, Harness 

Connector Inspection 

P.00E-2

. Then go to Step 7.

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

AK201174

1

6 5 4 3 2

B-05(B)

CONNECTOR: B-05

HARNESS 
CONNECTOR: 
COMPONENT SIDE

AB

6

1 2 3 4 5

AK201513AB

THROTTLE ACTUATOR
CONTROL MOTOR
SIDE CONNECTOR

AK201170

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

CONNECTOR: D-136

PCM

D-136(GR)

HARNESS CONNECTOR: 
COMPONENT SIDE

AB

 

 

 

 

 

 

 

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