Mitsubishi Montero (2004+). Manual — part 310

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-727

STEP 4. Check for short circuit to ground between throttle
actuator control motor connector B-05 (terminal No. 6) and
PCM connector D-136 (terminal No. 133).
Q: Is the harness wire in good condition?

YES : Go to Step 5.
NO : Repair it. Then go to Step 7.

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

13A-728

STEP 5. Check for short circuit to ground 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 P2102 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-729

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 P2102 set?

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

DTC P2103: Throttle Actuator Control Motor Circuit (Shorted High)

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-730

.

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-high

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 Conditions

• Battery positive voltage is higher than 8.3 volts.

Judgement Criteria

• Throttle actuator control motor current is 8

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)