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
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
. 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
. 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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