Mitsubishi Galant 9G. Manual — part 503
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-90
DTC 23 (P0720): Output Shaft Speed Sensor System
POWERTRAIN
CONTROL MODULE
JOINT
CONNECTOR (1)
JUNCTION
BLOCK
IGNITION
SWITCH (IG1)
OUTPUT SHAFT
SPEED SENSOR
AC209756AC
Output Shaft Speed Sensor System Circuit
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-91
AC306223
A-13 (GR)
AB
CONNECTOR: A-13
1
4
7
8
2 3
5
13
14
17
15
12
16
11
10
9
6
AC306248AE
B-22
(B)
CONNECTOR: B-22
PCM
AIR
CLEANER
JAE
94
98
107
103
112
91
100
109
101102
106
110
105
111
97
92
96
93
104
113
108
95
99
AC305353AC
CONNECTOR: B-107
BATTERY
B-107 (GR)
3
2
1
AC305231
CONNECTOR: C-01
AS
33
22
11
28
17
16
15
14
13
12
25
2324
2627
3
1 2
4 5
21
20
19
18
29 30
32
31
7
6
8
10
9
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-92
.
CIRCUIT OPERATION
• The output shaft speed sensor generates a 0 ⇔ 5
volt pulse signal when the output shaft rotates.
The pulse signal frequency increases with a rise
output shaft speed.
• The output shaft speed sensor is connected to
the PCM (terminals 112 and 113) via the output
shaft speed sensor connector (terminals 1 and 2).
• The PCM detects the output shaft speed by the
signal input to terminal 112.
• The output shaft speed sensor generates the
pulse signal as the teeth of the transfer drive gear
pass the magnetic tip of the sensor.
.
DESCRIPTIONS OF MONITOR METHODS
• <If open circuit occurs during driving test> If
abruptly reduced output revolution is detected
during driving test, and a difference between tur-
bine revolution and that value calculated from
output revolution equals or exceeds specified
value, PCM judges that output shaft speed sen-
sor has a failure.
• <If open circuit occurs with vehicle stopped, and
driving test is started> If there is no detection
pulse from output shaft speed sensor (output
rotation) even when engine revolution and turbine
revolution both equal or exceed specified value,
PCM judges that output shaft speed sensor has a
failure.
.
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)
• DTC 22 (P0715): Input shaft speed sensor mal-
function
• DTC 36 (P0743): Torque converter clutch sole-
noid malfunction
• DTC 31 (P0753): Low and reverse solenoid mal-
function
• DTC 32 (P0758): Underdrive solenoid malfunc-
tion
• DTC 33 (P0763): Second solenoid malfunction
• DTC 34 (P0768): Overdrive solenoid malfunction
• DTC 54 (P1751): A/T control relay malfunction
Sensor (The sensor below is determined to be
normal)
• Input shaft speed sensor
• Torque converter clutch solenoid
• Low and reverse solenoid
• Underdrive solenoid
• Second solenoid
• Overdrive solenoid
• A/T control relay
.
AC207134
C-214
C-215
CONNECTORS: C-214, 215
AO
1
3 4
2
6
5
C-214
C-215
6
1
7
2
9
8
10
3
5
12
11
4
1314
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-93
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS
Check Conditions
• Transmission range switch position: D, 3, 2 or L.
• Input speed: 1,000 r/min or more.
• Engine speed: 1,000 r/min or more.
• Transmission fluid temperature sensor voltage:
4.5 volts or less.
• Calculated slip (engine speed - input speed): 100
r/min or more.
Yes
No
No
AC205226
N
E
:
Engine speed
START
Yes
No
Transmission fluid
temperature sensor
voltage < 4.5 V
Transmission range
switch position is in
D, 3, 2 or L range
Yes
N
OPG-B
< (N
IPG-A
- 200 r/min) / I
Continuous failure for 4 secs.
Good
Malfunction
END
Yes
Yes
No
N
OPG-B
: Output speed
(output shaft speed sensor)
No
Yes
N
OPG-B
< -18.5 r/min / 16 msec.
N
IPG-A
> 500 r/min
No
No
No
No
Yes
N
IPG-A
> 1,000 r/min
No
Yes
N
E
> 1,000 r/min
No
Yes
N
E
> N
IPG-A
+ 100 r/min
Yes
Pulses of output shaft
speed sensor are not
inputted
Malfunction
Yes
Continuous failure
for 4 secs.
Good
N
OPG-B
: Output speed change
N
IPG-A
: Input speed
(input shaft speed sensor)
I
:
Gear ratio
AC
-31.9
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