Mitsubishi Outlander (2013+). Manual — part 365

TROUBLESHOOTING

CVT

23A-30

STEP 4. Retest the system.

Q: Is the check result normal?

YES :

The inspection is complete.

NO :

Replace the CVT assembly.

Code P0882: Malfunction of power supply system (Low)

Code P0883: Malfunction of power supply system (high)

DIAGNOSTIC FUNCTION

CVT-ECU monitors if power supply system is normal
or not and judges the trouble.

JUDGEMENT CRITERIA

• <P0882> : When the engine speed is 450 r/min

or more and secondary pressure is above 0.3
MPa, the power supply voltage is 9.0 V or less
(for 5 seconds)

• <P0883>: When the engine speed is 450 r/min or

more, the secondary pressure is above 0.3 MPa
and the vehicle speed is 1 km/h or more, the
power supply voltage is 16.0 V or more (for 5 sec-
onds)

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Check for short circuit in power supply
line between the fusible link and the CVT control
relay connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the connector(s) or wiring harness.

STEP 2. Check for short circuit in VIG1, VIG2 line
between the CVT control relay connector and the
CVT-ECU connector.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the connector(s) or wiring harness.

STEP 3. Check for open circuit in GND1, GND2
line between the CVT-ECU connector and earth.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the wiring harness.

STEP 4. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1637: Malfunction of Memory Backup

DIAGNOSTIC FUNCTION

CVT-ECU checks the consistency between EEP-
ROM and the backup memory.

JUDGEMENT CRITERIA

When the ignition switch is turned to the ON position,
CVT-ECU determines that the writing to the EEP-
ROM area had failed last time the ignition switch was
turned to the OFF position.

PROBABLE CAUSES

• Damaged wiring harness and connectors

• Malfunction of CVT-ECU (Faulty EEPROM)

DIAGNOSTIC PROCEDURE

STEP 1. Check if diagnosis code P1637 is erased
by turning the ignition switch from the OFF
position to the ON position.

Q: Is the check result normal?

YES :

This diagnosis code will be set by

disconnecting the battery. If the diagnosis
code is not erased by turning the ignition
switch to the ON position, it is judged to be
normal.

NO :

Go to Step 2.

TROUBLESHOOTING

CVT

23A-31

STEP 2. Check for open circuit in power supply
line

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the wiring harness.

STEP 3. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1706: Malfunction of Throttle Signal

DIAGNOSTIC FUNCTION

CVT-ECU detects the abnormality in the throttle posi-
tion signal sent from the engine-ECU.

JUDGMENT CRITERIA

The value inverted against the throttle position signal
received from the engine ECU is fixed for one sec-
ond.

PROBABLE CAUSES

• Malfunction of the CAN bus

• Malfunction of engine system

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to perform the CAN bus diagnosis.

Q: Is the check result normal?

YES :

Go to Step 2

NO :

Repair the CAN bus lines (Refer to GROUP
54C

− Troubleshooting, Diagnosis Code

Chart ).

STEP 2. M.U.T.-III diagnosis code
Check if the engine-related diagnosis code is set.

Q: Is diagnosis code set?

YES :

Diagnose the engine control system.

NO :

Go to Step 3

STEP 3. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1710: Malfunction of Vehicle Speed Signal

DIAGNOSTIC FUNCTION

CVT-ECU conducts fault detection by detecting the
rapid change in the estimated vehicle speed signal
received from the ASC-ECU.

JUDGEMENT CRITERIA

• Difference between the estimated vehicle speed

and the one measured before 0.1 seconds is 29
km/h or more.

• The status with the vehicle speed of 10 km/h or

more and with the estimated vehicle speed of 2
km/h or less continues for 20 seconds.

PROBABLE CAUSES

• Malfunction of the CAN bus

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Troubleshoot the CAN system if
diagnosis code U0121 is set.

Q: Is the diagnosis code U0121 set?

YES :

Diagnose the CAN system.

NO :

Go to Step 2.

STEP 2. M.U.T.-III data list

• Item 21: Vehicle speed signal

• Item 22: Vehicle speed

OK: The difference between to vehicle speed
signal and the vehicle speed is 10 km/h or
less.

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Go to Step 3.

TROUBLESHOOTING

CVT

23A-32

STEP 3. Check ASC-related diagnosis codes.

Q: Is the ASC-related diagnosis code set?

YES :

Carry out the appropriate troubleshooting.

NO :

Go to Step 4.

STEP 4. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1723: Abnormality in Speed Sensor System Function

DIAGNOSTIC FUNCTION

CVT-ECU detects the abnormal wave pattern of the
speed sensor signal.

JUDGEMENT CRITERIA

• Rotational fluctuation of primary pulley is large

(for 1 second).

• Rotational fluctuation of secondary pulley is large

(for 1 second).

PROBABLE CAUSES

• Malfunction of primary pulley speed sensor

• Malfunction of secondary pulley speed sensor

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Check the following connector:

• CVT-ECU connector

• Primary pulley speed sensor connector

• Secondary pulley speed sensor connector

• Intermediate 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

P.23A-47

.

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
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1740: Malfunction of Lockup/Select Switching Solenoid Valve

DIAGNOSTIC FUNCTION

CVT-ECU detects abnormal operation of the
lockup/select switching solenoid valve.

JUDGEMENT CRITERIA

• The status with the switching solenoid valve ON

and with the monitoring value OFF is detected for
0.2 second.

• The status with the switching solenoid valve OFF

and with the monitoring value ON is detected for
0.5 seconds.

PROBABLE CAUSES

• Malfunction of valve body assembly (Faulty

lockup/select switching solenoid valve)

• Damaged wiring harness and connectors

• Malfunction of CVT-ECU

TROUBLESHOOTING

CVT

23A-33

DIAGNOSTIC PROCEDURE

STEP 1. M.U.T.-III data list
Item 36: LU/SEL switching solenoid output
Item 37: LU/SEL switching solenoid monitor

OK: Check that the output and monitor do
not differ greatly.

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Go to Step 2.

STEP 2. Check for open circuit and short to earth
in LUOS line between the CVT-ECU connector
and the CVT assembly connector.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the wiring harness.

STEP 3. Lockup/select switching solenoid valve
single unit check
Refer to

P.23A-52

.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the valve body assembly.

STEP 4. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1745: Monitoring of Percentage Change in Gear Ratio

DIAGNOSTIC FUNCTION

CVT-ECU conducts fault detection by monitoring the
internal calculated value.

JUDGMENT CRITERIA

Percentage change in gear ratio is larger than the
standard value.

PROBABLE CAUSES

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.

Code No. P1773: Malfunction of ABS

DIAGNOSTIC FUNCTION

CVT-ECU detects the ABS abnormality.

JUDGEMENT CRITERIA

When the ABS error signal reception continues for
0.5 seconds.

PROBABLE CAUSES

• Malfunction of the ABS system

• Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. ABS system diagnosis code check

Q: Is the ABS system diagnosis code set?

YES :

Carry out the troubleshooting for ABS.

NO :

Go to Step 2.

STEP 2. Symptom recheck after erasing
diagnosis code

Q: Is the check result normal?

YES :

Intermittent malfunction

NO :

Replace CVT-ECU.