Mitsubishi Montero (2004+). Manual — part 311
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-731
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
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-732
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-733
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 P2103 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-734
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 P2103 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
DTC P2108: Throttle Actuator Control Module Processor Malfunction
.
TECHNICAL DESCRIPTION
• PCM checks the throttle actuator control module
processor for abnormal conditions.
.
DESCRIPTIONS OF MONITOR METHODS
• No watch dog pulse of throttle actuator control
module is detected.
• Difference between throttle position sensor
(main) output and target opening is greater than
the specified value.
.
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
• Ignition switch "ON" position.
Judgement Criteria
• No surveillance pulse signals are input for 0.5
second.
Check Conditions
• Throttle position sensor (main) output voltage is
between 0.35 and 4.8 volts.
• Accelerator pedal position sensor (main) is nor-
mal.
• Throttle position sensor is normal.
Judgement Criteria
• Difference between the throttle position sensor
(main) output voltage and the target throttle posi-
tion sensor (main) voltage should be 1 volt or
higher for 1 second.
.
OBD-II DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• PCM failed.
AK302970
AB
MB991911
MB991824
MB991827
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