Mitsubishi Galant (2004+). Manual — part 1294
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-869
DTC P2101: Throttle Actuator Control Motor Magneto Malfunction
.
CIRCUIT OPERATION
• Controls the current that is applied from the PCM
(terminals No. 141, No. 147) to the throttle actua-
tor control motor (terminals No. 1, No. 2).
.
TECHNICAL DESCRIPTION
• PCM check whether the throttle actuator control
motor magneto has failed.
.
DESCRIPTIONS OF MONITOR METHODS
Throttle acutuator control motor intelligent power
device detects it is overheating.
.
MONITOR EXECUTION
Continuous
.
AK302871
GREEN-WHITE
GREEN-YELLO
W
B-06
147
1
THROTTLE ACTUATOR
CONTROL MOTOR
POWERTRAIN
CONTROL MODULE (PCM)
141
2
6
1 2 3 4 5
B-23
Throttle Actuator Control Motor Circuit
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
147 148 149 150 151 152 153
AK303042
THROTTLE BODY ASSEMBLY
(INCORPORATING THROTTLE
POSITION SENSOR)
B-06 (B)
CONNECTOR: B-06
AB
AK303059
CONNECTOR: B-23
PCM
AB
AIR CLEANER
B-23
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-870
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
• The coil temperature of the throttle actuator con-
trol motor should be 180
°C (356°F) 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,
harness damage or connector damage.
• PCM failed.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
STEP 1. Check harness connector B-06 at throttle actuator
control motor for damage.
Q: Is the harness 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.
2 1
6 5 4 3
AK303044
HARNESS
CONNECTOR:
COMPONENT SIDE
B-06 (B)
CONNECTOR: B-06
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-871
STEP 2. Check the throttle actuator control motor.
(1) Disconnect the connector B-06.
(2) Measure the resistance between throttle actuator control
motor side connector terminal No. 1 and No. 2.
Standard value: 0.3
− 80 ohms [at 20°C (68°F) ]
Q: Is the measured resistance between 0.3 and 80 ohms [at
20
°C (68°F) ] ?
YES : Go to Step 3.
NO : Replace the throttle body assembly. Then go to Step
STEP 3. Check harness connector B-23 at PCM for damage
Q: Is the harness 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.
2 1
6 5 4 3
AK303044
HARNESS
CONNECTOR:
COMPONENT SIDE
B-06 (B)
CONNECTOR: B-06
AB
6
1 2 3 4 5
AK202992
THROTTLE ACTUATOR
CONTROL MOTOR
CONNECTOR
AB
127 126 125 124 123 122 121
133 132 131 130 129 128
140 139 138 137 136 135 134
146 145 144 143 142 141
153 152 151 150 149 148 147
AK303058
HARNESS CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-23
B-23
PCM
AB
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-872
STEP 4. Check for short circuit to ground and harness
damage between throttle actuator control motor connector
B-06 (terminal No. 1) and PCM connector B-23 (terminal
No. 147).
Q: Is the harness wire in good condition?
YES : Go to Step 5.
NO : Repair it. Then go to Step 7.
2 1
6 5 4 3
AK303044
HARNESS
CONNECTOR:
COMPONENT SIDE
B-06 (B)
CONNECTOR: B-06
AB
127 126 125 124 123 122 121
133 132 131 130 129 128
140 139 138 137 136 135 134
146 145 144 143 142 141
153 152 151 150 149 148 147
AK303058
HARNESS CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-23
B-23
PCM
AB
AIR CLEANER
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