relay MITSUBISHI MONTERO 2000 Service Repair Manual
[x] Cancel search | Manufacturer: MITSUBISHI, Model Year: 2000, Model line: MONTERO, Model: MITSUBISHI MONTERO 2000Pages: 1839, PDF Size: 29.19 MB
Page 969 of 1839
Page 973 of 1839
AUTOMATIC TRANSMISSION -Troublehshooting
INSPECTION PROCEDURES CLASSIFIED BY DIAGNOSIS CODE
Code No. 11, 12 Power supply voltage systemProbable cause
Code No. 11 is output to indicate a drop in voltage if the power supply voltage drops
below 9.5 V.
Code No. 12 is output to indicate overvoltage if the power supply voltage rises above
18 V.DMalfunction of ignition switch
DMalfunction of harness or connector
DMalfunction of transfer-ECU
NG OK
OK
Repair NG
Replace
NG
Ignition switch single part check
(Refer to GROUP 54 - Ignition Switch.)
Check the following connectors:
D-210, D-32, E-115, E-105,
E-115, E-105
Repair
Transient malfunction (Refer to GROUP 00 - Points to Note
for Transient Malfunctions.)
Measure at transfer-ECU connector E-105
DMeasure at ECU terminals.
DIgnition switch: ON
DVoltage between terminal 13 and earth
OK:System voltage
Check the harness between the ignition switch and the
transfer-ECU, and repair if necessary.
OK
Replace the transfer-ECU. OKOK NG
NGCheck the trouble symptoms.
MUT-
IIData List
DNo. 9 Ignition voltage
OK:Refer to P.23-87 (Data List Chart).
NG
Check the following connector:E-105
Code No. 13 Main relay (inside ECU) systemProbable cause
Code No. 13 is output to indicate a relay malfunction if the voltage rises to 6 V
or higher when the relay is off, or if it drops below 6 V when the relay is on.DMalfunction of transfer-ECU
Replace the transfer-ECU.
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Page 985 of 1839
AUTOMATIC TRANSMISSION -Troublehshooting
Code No. 41 Shift actuator system (open circuit or
short-circuit)Probable cause
Code No. 41 is output to indicate anopencircuit or short-circuit in the shift
actuator if the transfer-ECU terminal voltage is higher than themainrelay
voltage (90% of the rated voltage), or lower than themainrelay voltage (10% of
the rated voltage) when shift operation is notbeingcarried out.DMalfunction of shift actuator
DMalfunction of harness or connector
DMalfunction of transfer-ECU
LRefer to the Transmission Workshop Manual.
NG
NG
NG
MUT-
IIData List
DNo. 12 Shift actuator voltage
OK:Refer to P.23-87 (Data List Chart).Transient malfunction (Refer to GROUP 00 - Points to Note
for Transient Malfunctions.) OK
OK NG
Check the harness between the shift actuator and the
transfer-ECU, and repair if necessary.Repair
OKOK
OK
OK
NG
NG
Replace the transfer-ECU.
Check the following connectors:C-11, E-105Measure at shift actuator connector C-11.
DDisconnect the connector and measure at the harness
side.
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 2.
DVoltage between terminals 2 and earth
OK:System voltage
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 3.
DVoltage between terminal 1 and earth
OK:System voltage
Measure at transfer-ECU connector E-105
DMeasure at ECU terminals.
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 2.
DVoltage between terminal 1 and earth
OK:System voltage
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 3.
DVoltage between terminals 3 and earth
OK:System voltage
Repair NG
Check the following connector:C-11Repair
Replace the shift actuator.
L
Check the following connector:E-105
Check the trouble symptoms.
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Page 986 of 1839
AUTOMATIC TRANSMISSION -Troublehshooting
Code No. 42 Shift actuator system (short-circuit)Probable cause
Code No. 43 Shift actuator system (open circuit)
Code No. 42 is output to indicate a short-circuit in the shift actuator if the shift
actuator current is +1 A greater than the target value while the actuator isbeing
driven.
Code No. 43 is output to indicate anopencircuit in the shift actuator if themain
relay voltage is lower than 6 V, or the shift actuator current is 0.1 A lower than
the actual value while the actuator isbeing driven.DMalfunction of shift actuator
DMalfunction of harness or connector
DMalfunction of transfer-ECU
LRefer to the Transmission Workshop Manual.
NG
NG
MUT-
IIData List
DNo. 10 Shift actuator voltage
OK:Refer to P.23-87 (Data List Chart).Transient malfunction (Refer to GROUP 00 - Points to Note
for Transient Malfunctions.) OK
OK NG
Check the harness between the shift actuator and the
transfer-ECU, and repair if necessary.Repair
Check the following connector:E-105
OK OK
NG
OK
OK
NG
NG
Check the trouble symptoms.
Replace the transfer-ECU.
Check the following connectors:C-11, E-105Measure at shift actuator connector C-11.
DDisconnect the connector and measure at the harness
side.
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 2.
DVoltage between terminals 2 and earth
OK:System voltage
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 3.
DVoltage between terminal 1 and earth
OK:System voltage
Measure at transfer-ECU connector E-105
DMeasure at ECU terminals.
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 2.
DVoltage between terminal 1 and earth
OK:System voltage
DDrive the shift actuator in accordance with MUT-
IIactuator
test No. 3.
DVoltage between terminals 3 and earth
OK:System voltage
Repair NG
Check the following connector:C-11Repair
Replace the shift actuator.
L
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Page 988 of 1839
AUTOMATIC TRANSMISSION -Troubleshooting
DATA LIST REFERENCE TABLE
Item
No.Check itemInspection conditionsNormal condition
1Accelerator pedalEngine: StoppedAccelerator pedal: Fully closed985 - 1,085 mV
position sensor
(APS)Selector lever position:
PAccelerator pedal: DepressedGradually increases from
the above value.
Accelerator pedal: Fully open4000 mV or higher
2Front propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
3Rear propeller shaftTransfer position: 4WDDriving at a constant speed of30 km/h3Rear propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
4Difference between
front and rear pro-
peller shaft speedsTransfer position: 4WDDriving at a constant speed of
30 km/hWithin 5 km/h
5Vehicle speedIdling in 1st (Vehicle stopped)0 km/h
Driving at a constant speed of 50 km/h in 3rd50 km/h
6Transfer lever posi-Ignition switch: ONTransfer shift lever position: 2H2H
tionEngine: StoppedTransfer shift lever position: 4H4H
Transfer shift lever position:
4HLc4HLc
Transfer shift lever position:
4LLc4LLc
7Transfer positionDriving at a constant
speed of 10 km/hTransfer shift lever position:
2H®4H2H - 4H®4H
Transfer shift lever position:
4H®4HLc4H - 4HL®4HL
Engine: Stopped
Selector lever position:Transfer shift lever position:
4HLc®4LLc4HL - 4LL®4LL
NTransfer shift lever position:
4LLc®4HLc4HL - 4LL®4HL
Driving at a constant
speed of 10 km/hTransfer shift lever position:
4HLc®4H4H - 4HL®4H
Transfer shift lever position:
4H®2H2H - 4H®2H
8Main relay voltageIgnition switch: ONSystem voltage (V)
9Ignition voltageIgnition switch: ONSystem voltage (V)
10Shift actuator cur-
rentDuring transfer selection (while motor is running)0A®0.2 A®0A
11Target currentDuring transfer selection (while motor is running)0A®1.5 A®0A
12Shift actuator volt-
ageIgnition switch: ON
Selector lever position: N
Transfer shift lever position: 2H®4H (or 4H®4HLc,
4HLc®4LLc)System voltage (V)
Ignition switch: ON
Selector lever position: N
Transfer shift lever position: 4LLc®4HLc (or 4HLc®4H,
4H®2H)System voltage (V)
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Page 1210 of 1839
35A-2
BASIC BRAKE
SYSTEM
CONTENTS
GENERAL INFORMATION 3..................
SERVICE SPECIFICATIONS 5.................
LUBRICANTS 6..............................
SPECIAL TOOLS 6..........................
TROUBLESHOOTING
ON-VEHICLE SERVICE 19...................
Brake Pedal Check and Adjustment 19..........
Hydraulic Brake Booster (HBB) Operation Check
HBB Check
HBB Motor Relay Continuity Check
Brake Booster Operating Test
Check Valve Operation Check
Load Sensing Spring Length Check and
Adjustment
Load Sensing Proportioning Valve Function
Test
Bleeding
Brake Fluid Level Sensor Check 30.............
Brake Booster Vacuum Switch Check
Disc Brake Pad Check and Replacement 31.....
Disc Brake Rotor Check 32.....................
Brake Disc Thickness Check 32.................
Brake Disc Run-out Check and Correction 33....
BRAKE PEDAL 34..........................
HYDRAULIC BRAKE BOOSTER (HBB)
HBB BUZZER
MASTER CYLINDER AND BRAKE
BOOSTER
Master Cylinder 43.............................
FRONT DISC BRAKE 44....................
REAR DISC BRAKE 49......................
LOAD SENSING PROPORTIONING
VALVE
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Page 1217 of 1839
BASIC BRAKE SYSTEM -Troubleshooting35A-9
INSPECTION CHART FOR DIAGNOSIS CODES
Diagnosis
code No.Diagnosis itemsReference page
16*ABS-ECU power supply (Abnormal voltage decrease or increase)35A-9
17, 18ABS-ECU power supply (Open circuit or short circuit)
53Motor relay system (open circuit, short circuit or motor relay coil failure)35A-10
55Pump motor system (Pump motor seized or abnormal ABS-ECU current
detection circuit)35A-11
63ABS-ECU systemReplace ABS-ECU
(Refer to 35B.)
78Accumulator system (Motor has been energized abnormally for long time
or abnormal low-pressure accumulator)35A-12
79Pressure switch system (open circuit or short circuit)35A-13
NOTE
*: Code No. 16 is erased by turning the ignition switch OFF.
INSPECTION PROCEDURE FOR DIAGNOSIS CODES
Code No.16 ABB-ECU power supply system (abnormal
voltage increase or decrease)Probable cause
Code No.17, 18 ABS-ECU power supply system (open or
short circuit)
Code No.16 is output if the ABS-ECU power supply voltage is increased or decreased
than the specified.
Code No.17, 18 is output if the ABS-ECU power supply circuit isopen orshort, or
the ABS-ECU internal circuit is defective.
In addition, code No. 16 is erased by turning the ignition switch OFF.DMalfunction of the battery
DMalfunction of connector or harness
DMalfunction of the ABS-ECU
Caution
If the battery voltage is decreased or increased during the test, code No. 16 is output as a present
malfunction, disabling a correct diagnosis. Check the battery and fully charge it if necessary before
carrying out the following tests.
NG
NG
OK
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)
OK
Check trouble symptom.
NG
Repair
NG
Check the harness wire, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
OK
Check trouble symptom.
Measure at the ABS-ECU connector E-107.
DDisconnect the connector, and measure at the harness side.
DStart theengine and then measure the voltage between terminal
31 and the body earth.
OK:System voltageNGCheck the following connectors:E-13, E-107
Repair
OK
Check the following connectors:E-106, E-107
NG
Check the harness wire, and repair if necessary.
DBetween the ignition switch and the ABS-ECU
OK
Check trouble symptom.
Measure at the ABS-ECU connector E-106.
DDisconnect the connector, and measure at the harness side.
DStart theengine and then measure the voltage between terminal
13 and the body earth.
OK:System voltageNG
Check the following connectors:D-32
D-128, D-208, D-210
Repair
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Page 1218 of 1839
BASIC BRAKE SYSTEM -Troubleshooting35A-10
Code No.53 Motor relay system (open circuit, short circuit
or a defective motor relay coil)Probable cause
This code is output if the motor relay circuit is short or open, ABS-ECU internal circuit
is defective, or the hydraulic brake booster (HBB) master cylinder and hydraulic unit
assembly is defective.DMalfunction of connector or harness
DMalfunction of the motor relay
DMalfunction of the ABS-ECU
DMalfunction of the HBB (master cylinder and
hydraulic unit assembly)
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)NG
Repair
NG
OK
Check trouble symptom.
Repair NGNG
OK
Check trouble symptom.
Replace
OK
Check the following connectors:
B-17, B-18, B-19X, B-20X,
D-32
Check the harness wire:
DBetween the ignition switch and the motor relay
DBetween fusible link No.9 and the motor relay
DBetween the motor relay and HBB
DBetween the motor relay and the ABS-ECU
DBetween the HBB and the ABS-ECU
Check trouble symptom.
NG
NG
Replace
OK
Check the motor relay. (Refer to P.35A-24.)
Check the hydraulic brake booster (HBB).
(Refer to P.35A-23.)
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Page 1219 of 1839
BASIC BRAKE SYSTEM -Troubleshooting35A-11
Code No.55 Pump motor system (pump motor seized or
abnormal ABS-ECU current detection circuit)Probable cause
This code is output if the motor relay drive circuit is short or open, the motor relay
or the ABS-ECU internal circuit is defective, or the hydraulic brake booster (HBB)
pump motor ormaster cylinder and hydraulic unit assembly is defective.DMalfunction of connector or harness
DMalfunction of the motor relay
DMalfunction of the ABS-ECU
DMalfunction of the HBB (pump motor or master
cylinder and hydraulic unit assembly)
NG
Repair
NG
OK
Check trouble symptom.
Repair NGNG
OK
Check trouble symptom.
Replace
OK
Check the following connectors:
B-17, B-18, B-19X, B-20X,
E-107
Check the harness wire:
DBetween fusible link No.9 and the motor relay
DBetween the motor relay and HBB
DBetween the HBB and the ABS-ECU
DBetween the HBB and the earthNG
Check the motor relay. (Refer to P.35A-24.)
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)
Check trouble symptom.
NG
OKCheck the hydraulic brake booster (HBB).
(Refer to P.35A-23.)Replace NG
Replace
OKCheck the continuity and resistance of thepump motor.(Refer
to P.35A-23.)
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Page 1220 of 1839
BASIC BRAKE SYSTEM -Troubleshooting35A-12
Code No. 78 Accumulator system (Motor has
been energized abnormally for long time or
abnormal low-pressure accumulator)Probable cause
This code is output under the following cases:
DPump motor is operated for consecutive 300 seconds
DBrake fluid pressure is decreased, the HBB buzzer sounds due
to the operation of the pressure switch (for low pressure
warning), and then the brake warninglamp illuminates.DBrake fluid leaks inside the hydraulic brake booster (HBB)
DMalfunction of the HB motor relay
DMalfunction of connector or harness
DMalfunction of the ABS-ECU
DMalfunction of HBB (accumulator, pressure switch,pump motor or
master cylinder and hydraulic unit assembly)
NG
Repair
NG
OK
Check trouble symptom.
Repair NGNG
OK
Check trouble symptom.
Replace
OK
Check the following connectors:
B-17, B-18, B-19X, B-20X,
E-106, E-107
Check the harness wire:
DBetween fusible link No.9 and the motor relay
DBetween the motor relay and HBB
DBetween the HBB and the ABS-ECU
DBetween the HBB and the earthNG
Check the motor relay. (Refer to P.35A-24.)
NG
Replace the ABS-ECU. (Refer to GROUP 35B.)
Check trouble symptom.
NG
OKCheck the pressure switch. (Refer to P.35A-23.)NG
Replace
OKCheck the continuity and resistance of thepump motor.(Refer
to P.35A-23.)NG
Replace
OKVisually check the accumulator
Replace the master cylinder and hydraulic unit assembly.
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