Mitsubishi Eclipse. Manual — part 817
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-277
Judgement Criteria
• Calculated slip (engine speed - input speed): 5
r/min or less. (10 seconds)
• Calculated slip (engine speed - input speed): -5
r/min or more. (10 seconds)
.
OBD-II DRIVE CYCLE PATTERN
Start the engine, and drive at 30 km/h (19 mph) for
30 seconds. Then stop the vehicle, and turn "LOCK"
(OFF) the ignition switch. After that, restart the
engine, and drive again at 30 km/h (19 mph) for 30
seconds.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
• Malfunction of the torque converter clutch sole-
noid valve
• Malfunction of the valve body
• Damaged harness or connector
• 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
STEP 1. Using scan tool MB991958, read the A/T
diagnostic trouble code.
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) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 36 set?
YES : Refer to
, DTC 36: Torque Converter
Clutch Solenoid Valve System.
NO : Go to Step 2.
AC303127
AB
MB991911
16-PIN
MB991827
MB991824
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-278
STEP 2. Using scan tool MB991958, check data list item 52:
Amount of Torque Converter Clutch Slippage.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and drive the vehicle at a constant speed of
60 km/h (37 mph). (Gear range: 3rd gear)
(3) Set scan tool MB991958 to the data reading mode for item
52: Amount of Torque Converter Clutch Slippage.
• Driving at a constant speed of 60 km/h (37 mph), the
display should be "
−10 to 10 r/min."
• If the accelerator pedal is released, the display on the
scan tool changes. (50 km/h (31 mph) and less).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the torque converter clutch slippage within the
specified range?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.
NO : Go to Step 3.
STEP 3. Replace the PCM.
(1) Replace the PCM.
(2) Test drive the vehicle.
(3) Check for A/T diagnostic trouble code.
Q: Is DTC 53 set?
YES : Go to Step 4.
NO : The procedure is complete.
STEP 4. Replace the valve body.
(1) Replace the valve body. Refer to GROUP 23B, Transaxle
.
(2) Test drive the vehicle.
(3) Check for A/T diagnostic trouble code.
Q: Is DTC 53 set?
YES : Replace the Torque Converter. Refer to GROUP 23B,
Transaxle
NO : The procedure is complete.
AC303127
AB
MB991911
16-PIN
MB991827
MB991824
AC001860 AB
VALVE
BODY
ASSEMBLY
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-279
DTC 54 (P1751): A/T Control Relay System
AC106637AB
A/T Control Relay System Circuit
AC102447AF
BATTERY
CONNECTOR: A-17X
A-17X
FRONT OF VEHICLE
AC001729AY
CONNECTOR: C-07
C-07
AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-280
.
CIRCUIT OPERATION
• A/T control relay (terminal 1) receives battery
positive voltage through a dedicated 20 amp
fuse.
• The PCM (terminal 50) applies voltage to ener-
gize the A/T control relay (terminal 2). With the
A/T control relay energized, system voltage is
applied to the PCM (terminals 77 and 89).
.
DESCRIPTIONS OF MONITOR METHODS
If relay output voltage is below specified value, PCM
judges that A/T control relay 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 41 (P0731): 1st gear incorrect ratio
• DTC 42 (P0732): 2nd gear incorrect ratio
• DTC 43 (P0733): 3rd gear incorrect ratio
• DTC 44 (P0734): 4th gear incorrect ratio
• DTC 46 (P0736): Reverse gear incorrect ratio
• DTC 36 (P0743): Torque converter clutch sole-
noid malfunction
• DTC 31 (P0753): Low-reverse solenoid malfunc-
tion
• DTC 32 (P0758): Underdrive solenoid malfunc-
tion
• DTC 33 (P0763): Second solenoid malfunction
• DTC 34 (P0768): Overdrive solenoid malfunction
Sensor (The sensor below is determined to be
normal)
• Torque converter clutch solenoid
• Low-reverse solenoid
• Underdrive solenoid
• Second solenoid
• Overdrive solenoid
.
AC001657
CONNECTORS: C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>, C-57 <2.4L ENGINE>
OR C-59 <3.0L ENGINE>
BB
PCM
C-54 <2.4L ENGINE> OR
C-55 <3.0L ENGINE>
C-57 <2.4L ENGINE>
OR
C-59 <3.0L ENGINE>
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст