Mitsubishi Outlander GS45X. Manual — part 1635
DIAGNOSIS
TSB Revision
CVT
23A-97
DTC P1723: Abnormality in Speed Sensor System Function
SECONDARY
PULLEY
SPEED
SENSOR
PRIMARY
PULLEY
SPEED
SENSOR
TRANSAXLE
CONTROL MODULE
RELAY BOX
CVT
CONTROL
RELAY
FUSIBLE
LINK
36
ENGINE
COMPARTMENT
Speed sensor system circuit
AC901226AB
DIAGNOSIS
TSB Revision
CVT
23A-98
.
DIAGNOSTIC FUNCTION
TCM detects the abnormal wave pattern of the speed
sensor signal.
.
DESCRIPTIONS OF MONITOR METHODS
• Rotational fluctuation of primary pulley is large
(for 1 second).
• Rotational fluctuation of secondary pulley is large
(for 1 second).
.
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)
• P0741: Abnormality in lockup function
• P0746: Abnormality in hydraulic control system
function
• P0841: Abnormality in line pressure sensor func-
tion
• P0868: Secondary pressure drop
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
AC709490
Connectors: A-12, A-13
AC
A-12
A-13
AC709650
Connector: A-18X
AB
AC709493
AF
Connectors: B-124, B-126
B-124 (B)
B-126 (B)
AC703253
Connector: C-37
Brake pedal
AC
DIAGNOSIS
TSB Revision
CVT
23A-99
LOGIC FLOW CHARTS (Monitor Sequence)
.
DTC SET CONDITIONS
Check Conditions
• Voltage of battery: 9 volts or more.
• Voltage of battery: 16 volts or less.
JUDGMENT CRITERIA
• Noise of primary pulley or primary pulley speed
sensor signal: more than 30 r/min. (1 second)
• Noise of primary pulley or secondary pulley
speed sensor signal: more than 30 r/min. (1 sec-
ond)
.
OBD-II DRIVE CYCLE PATTERN
Ignition switch : ON (start the engine and keep it for
10 seconds or more)
.
PROBABLE CAUSES
• Malfunction of primary pulley speed sensor
• Malfunction of secondary pulley speed sensor
• Malfunction of TCM
AC802631
START
Yes
Yes
No
Noise of primary
speed sensor > 30 r/min
Noise of primary
speed sensor > 30 r/min
No
Good
Malfunction
END
Yes
No
No
Continuous for 1 sec
Yes
Continuous for 1 sec
DIAGNOSIS
TSB Revision
CVT
23A-100
DIAGNOSTIC PROCEDURE
STEP 1. Check the following connector:
• C-37 TCM connector
• B-126 Primary pulley speed sensor connector
• B-124 Secondary pulley speed sensor connector
Check for the connection with terminals.
Q: Is the check result normal?
YES : Go to Step 2.
NO : Repair the defective connector.
STEP 2. Use an oscilloscope to measure the wave patterns
of the primary pulley speed sensor and secondary pulley
speed sensor.
Refer to
.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Replace the primary pulley speed sensor or
secondary pulley speed sensor.
STEP 3. Symptom recheck after erasing diagnostic trouble
code
Q: Is the check result normal?
YES : Intermittent malfunction
NO : Replace TCM.
DTC P1740: Malfunction of Lockup/Select Switching Solenoid Valve
.
SOLENOID VALVE SYSTEM CIRCUIT
Refer to
.
.
DIAGNOSTIC FUNCTION
TCM detects abnormal operation of the lockup/select
switching solenoid valve.
.
DESCRIPTIONS OF MONITOR METHODS
• Specified amount of current is not flown to the
lockup/select switching solenoid valve because
of an open or short circuit.
.
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)
• P0741: Abnormality in lockup function
• P0746: Abnormality in hydraulic control system
function
• P0841: Abnormality in line pressure sensor func-
tion
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
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