Mitsubishi Montero (2004+). Manual — part 934
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-311
STEP 2. Disassemble and clean the valve body.
Check the O-ring installation bolts for looseness and valve
body for damage. Repair or replace the faulty parts. Refer to
GROUP 23B, Valve Body
.
Replace the valve body assembly if the damages are thought
to be irreparable. Then retest the system.
Q: Is the repair possible and the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 4.
STEP 3. Check the transmission power train components.
Disassemble the transmission and check the planetary carrier
and output shaft, etc. Repair or replace the damaged parts.
Refer to GROUP 23B, Transmission
, Low-Reverse
Annulus Gear
. Then check the symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 5.
STEP 4. Replace the transmission oil pump.
(1) Remove the transmission.
(2) Replace the transmission oil pump (Oil pump cannot be
repaired). Refer to GROUP 23B, Transmission
.
Then check the symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 5.
STEP 5. Replace the PCM.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Start over at Step 1.
ACX02161AD
VALVE BODY ASSEMBLY
AC204883AJ
PLANETARY
CARRIER
DIRECT
PLANETARY
CARRIER
AC204883 AD
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-312
INSPECTION PROCEDURE 5: Engine Stalls when Moving Selector Lever from "N" to "D" or "N" to "R"
.
COMMENT
If the engine stalls when the selector lever is shifted
from "N" to "D" or "R" range while the engine is idling,
the cause is probably a malfunction of the engine
system, torque converter clutch solenoid valve, valve
body or torque converter (torque converter clutch
malfunction).
.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CASE:)
• Malfunction of the engine system
• Malfunction of the torque converter clutch sole-
noid
• Malfunction of the valve body
• Malfunction of the torque converter (Malfunction
of the torque converter clutch)
• Malfunction of the PCM
DIAGNOSIS
STEP 1. Check the engine system.
Refer to GROUP 13A, Diagnosis
− Trouble Symptom Chart −
When the engine is hot, it stalls at idle
Q: Is the inspection result good?
YES : Go to Step 2.
NO : Repair or replace the engine components.
STEP 2. Replace the torque converter clutch solenoid
valve.
Replace the torque converter clutch solenoid valve. Refer to
GROUP 23B, Valve Body
. Then check the symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 3.
STEP 3. Disassemble and clean the valve body.
Check the O-ring installation bolts for looseness and valve
body for damage. Repair or replace the faulty parts. Refer to
GROUP 23B, Valve Body
.
Replace the valve body assembly if the damages are thought
to be irreparable. Then check the symptom.
Q: Is the repair possible and the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 4.
ACX02161AE
ACX02161AD
VALVE BODY ASSEMBLY
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-313
STEP 4. Replace the torque converter assembly.
(1) Remove the transmission.
(2) Replace the torque converter assembly. Refer to GROUP
23B, Transmission
. Then check the symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 5.
STEP 5. Replace the PCM.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Start over at Step 1.
INSPECTION PROCEDURE 6: Shift Shock when Shifting from "N" to "D" and Long Delay
.
COMMENT
If abnormal shock or delay of two seconds or more
occurs when the selector lever is shifted from "N" to
"D" range while the engine is idling, the cause is
probably abnormal underdrive clutch pressure or a
malfunction of the underdrive clutch, valve body or
APP sensor.
.
TROUBLESHOOTING HINTS (THE MOST LIKELY
CAUSES FOR THIS CASE:)
• Abnormal underdrive clutch pressure
• Malfunction of the underdrive solenoid valve
• Malfunction of the underdrive clutch
• Malfunction of the valve body
• Malfunction of the APP sensor
• Malfunction of the PCM
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
AC204883 AE
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-314
STEP 1. Using scan tool MB991958, check actuator test
item 02: Underdrive Solenoid Valve.
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) Set scan tool MB991958 to the actuator test mode.
• Item 02: Underdrive Solenoid Valve.
• An audible clicking or buzzing should be heard when
the underdrive solenoid valve is energized.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?
YES : Go to Step 2.
NO : Repair or replace the underdrive solenoid valve.
Refer to GROUP 23B, Valve Body
confirm that the symptom is eliminated.
STEP 2. Check when shift shock occurs.
Q: When does the shift shock occur?
When engaging from N to D : Go to Step 3.
When the vehicle starts moving : Go to Step 6.
STEP 3. Check the hydraulic pressure (for underdrive
clutch).
Measure the hydraulic pressure for underdrive clutch when the
selector lever is shifted from "N" to "D" range. Check if the
hydraulic pressure is within the standard value. Refer to
, Hydraulic Pressure Test.
Q: Is the hydraulic pressure within the standard value?
YES : Go to Step 4.
NO : Go to Step 8.
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст