MITSUBISHI MONTERO 2000 Service Repair Manual
Manufacturer: MITSUBISHI, Model Year: 2000, Model line: MONTERO, Model: MITSUBISHI MONTERO 2000Pages: 1839, PDF Size: 29.19 MB
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AUTOMATIC TRANSMISSION -Troubleshooting AUTOMATIC TRANSMISSION -Troubleshooting 23-51
Inspection procedure 5
Does not move (forward or reverse)
Probable cause
If the vehicle does not move forward or reverse when the selector lever is
moved to any position while the engine is idling, thecause is probably a
problem with line pressure or a malfunction of the oil pumps and valve bodies in
the power train.DAbnormal line pressure
DMalfunction of power train components
DMalfunction of oil pump
DMalfunction of valve body
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
Fluid pressure test (Refer to P.23-106.)
DMeasure the fluid pressure at each element in 1st, 2nd
and reverse.
Standard value:Refer to P.23-106.OKCheck the power train components
L
DDisassemble the transmission and check the condition of
components such as the planetary carrier, output shaft and
differential.
NG
Replace the oil pumpassembly.
L
(The oilpump cannot be disassembled.)
Disassemble, clean and re-assemble the valve body.
L
DMake sure that the mounting bolts are not loose and that
the O-ring and valve body are notdamaged or positioned
incorrectly.
DIf the extent of thedamagelooks too bad for repairs to be
carried out, replace the valve body assembly.NG
NG
Check the trouble symptoms.
Replace the engine-A/T-ECU or A/T-ECU.
Inspection procedure 6
Engine stalls during shifting
Probable cause
If the enginestalls when the selector lever is moved from N to D or R while the
engine is idling, thecause is probably a malfunction of theenginesystem, DCC
solenoid valve, valve body, or torque converter (damper clutch).DMalfunction of enginesystem
DMalfunction of DCC solenoid valve
DMalfunction of valve body
DMalfunction of torque converter (malfunction of
damper clutch)
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
LRefer to the Transmission Workshop Manual.
Engine system check
DControl system, ignition system, fuel system, vehicle bodyNG
Repair or replace
OK
Replace the DCC solenoid valve.
L
Disassemble, clean and re-assemble the valve body.
L
DMake sure that the mounting bolts are not loose and that
the O-ring and valve body are notdamaged or positioned
incorrectly.
DIf the extent of thedamagelooks too bad for repairs to be
carried out, replace the valve body assembly.NGReplace the torque converter assembly.
Check the trouble symptoms.
Replace the engine-A/T-ECU or A/T-ECU.NG
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AUTOMATIC TRANSMISSION -Troubleshooting AUTOMATIC TRANSMISSION -Troubleshooting 23-58
Inspection procedure 16
Inhibitor switch system
Probable cause
The cause is probably a malfunction of the inhibitor switch circuit or the ignition
switch circuit.DMalfunction of Inhibitor switch
DMalfunction of ignition switch
DMalfunction of harness or connector
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
Inhibitor switch check (Refer to P.23-98.)NG
OK
Inhibitor switch connector C-05 voltage check
DDisconnect the connector and measure at the
harness side.
DVoltage between terminal 7 and earth
(Ignition switch: ON)
OK:System voltage
OKCheck the following connectors:D-208, D-213,
D-32, E-115, C-05NG
Repair
OK
Check the harness between the inhibitor switch
and the ignition switch.
OK
Check the trouble symptoms.
NGNG
Repair
Check the trouble symptoms.Replace
NG
Repair
Ignition switch check
NG
Repair
DCheck the harness between the inhibitor
switch and the engine-A/T-ECU. <6G7>
DCheck the harness between the inhibitor
switch and the A/T-ECU.<4M4>
OK
Replace the engine-A/T-ECU or A/T-ECU. NGNG
OK
Check the following connectors:<6G7> C-05,
E-113, D-128, D-122, <4M4>C-05, E-115, D-128,
B-109
Inspection procedure 17
Shift switch assembly system
Probable cause
The cause is probably a malfunction of the inhibitor switch circuit, shift switch
assembly circuit, or of the engine-A/T-ECU or A/T-ECU.DMalfunction of inhibitor switch
DMalfunction of select switch
DMalfunction of shift switch (UP)
DMalfunction of shift switch (DOWN)
DMalfunction of harness or connector
DMalfunction of engine-A/T-ECU <6G7>
DMalfunction of A/T-ECU<4M4>
Inhibitor switch check (Refer to P.23-98.)NGInhibitor switch check
DInspection Procedure 16: Inhibitor switch system check
(Refer to P.23-58.)
OK
Shift switch assembly check (Refer to P.23-117.)NG
Replace
OK
DCheck the harness between the shift switch assembly and
the engine-A/T-ECU. <6G7>
DCheck the harness between the shift switch assembly and
the A/T-ECU.<4M4>NG
Repair
OK
Check the trouble symptoms.NGReplace the engine-A/T-ECU or A/T-ECU.
OK
Check the following connectors:<6G7> E-117, E-113,
D-122, <4M4> E-117, E-113,D-109NG
Repair
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