Mitsubishi Lancer Evolution VI. Manual — part 70
ABS –
Troubleshooting
35B-30
ACTUATOR TEST REFERENCE TABLE
The MUT-
II
activates the following actuators for testing.
NOTE
(1) If the ABS-ECU runs down, actuator testing cannot be carried out.
(2) Actuator testing is only possible when the vehicle is stationary.
ACTUATOR TEST SPECIFICATIONS
Item
No.
Checking item
Activation
01
Solenoid valve for front-right
wheel
Solenoid valves and
pump motors in the
h d
li
it ( i
l
02
Solenoid valve for front-left
wheel
p
p
hydraulic unit (simple
inspection mode)
03
Solenoid valve for rear-right
wheel
04
Solenoid valve for rear-left
wheel
CHECK AT ABS-ECU TERMINALS
TERMINAL VOLTAGE LISTING
1.
The voltage is to be measured across each terminal and ground terminal.
2.
Fig. below shows the arrangement of the terminals.
<EVOLUTION-IV>
Terminal
No.
Check item
Check requirement
Normally
1
Solenoid valve IN (RR) output
Ignition switch: ON (after initial check)
System voltage
2
Ground
At all times
0 V
14
Solenoid valve OUT (FL) output
Ignition switch: ON (after initial check)
System voltage
15
Solenoid valve OUT (RR) output
Ignition switch: ON (after initial check)
System voltage
16
Solenoid valve IN (FL) output
Ignition switch: ON (after initial check)
System voltage
2s
1s
Activation pattern of Items No. 01 – 04
Solenoid
valve
Pump
motor
ON
OFF
MUT-
II
actuator test
(Items No. 01, 02, 03, 04) start
End
A
B
C
About 0.05s
About
0.01s
NOTE
A: Hydraulic pressure increase
B: Hydraulic pressure holds
C: Hydraulic pressure decrease
ABS –
Troubleshooting
35B-31
Terminal
No.
Normally
Check requirement
Check item
17
Acceleration sensor input
Ignition switch: ON
2.4 – 2.6 V
(horizontal position)
18
Acceleration sensor ground
At all times
0 V
25
ABS-ECU backup power supply
At all times
System voltage
26
ABS-ECU power supply
Ignition switch: ON
System voltage
Ignition switch: START
0 V
31
Ground
At all times
0 V
33
Diagnosis changeover input
When the MUT-
II
is connected
0 V
When the MUT-
II
is not connected
System voltage
34
Valve relay monitor input
Ignition switch: ON (after initial check)
System voltage
35
Motor monitor input
Ignition switch:
ON (after initial
When motor is ON
System voltage
ON (after initial
check)
When motor is OFF
0 V
37
Solenoid valve OUT (RL) output
Ignition switch: ON (after initial check)
System voltage
38
Solenoid valve IN (FR) output
Ignition switch: ON (after initial check)
System voltage
39
Ground
At all times
0 V
40
Stop lamp switch input
Ignition switch:
ON
Stop lamp switch: ON
System voltage
ON
Stop lamp switch: OFF
0 V
41
Diagnosis data input/output
When the MUT-
II
is connected
Serial communica-
tion with MUT-
II
possible
When the MUT-
II
is not connected
–
42
Valve relay output
Ignition switch:
ON
When relay is ON
(after initial check)
0 V
When relay is OFF
System voltage
43
Motor relay output
Ignition switch:
ON
When motor is energized
0 V
ON
When motor is deenergized
System voltage
44
ABS warning lamp output
Ignition switch:
ON
When lamp is off
System voltage
ON
When lamp is on
0 V
45
Solenoid valve IN (RL) output
Ignition switch: ON
System voltage
46
Solenoid valve OUT (FR) output
Ignition switch: ON
System voltage
ABS –
Troubleshooting
35B-32
<EVOLUTION-V, VI>
Terminal
No.
Check item
Check requirement
Normally
1
Solenoid valve OUT (FL) output
Ignition switch: ON (after initial check)
System voltage
2
Solenoid valve OUT (RR) output
Ignition switch: ON (after initial check)
System voltage
3
Solenoid valve IN (RR) output
Ignition switch: ON (after initial check)
System voltage
4
Acceleration sensor (longitudinal
acceleration) input
Ignition switch: ON
2.4 – 2.6 V
(horizontal position)
11
Wheel speed (FL) output
Vehicle stationary
1 V or less
Moving forward slowly
0 – 5 V
13
ABS-ECU power supply
Ignition switch: ON
System voltage
14
Solenoid valve IN (FL) output
Ignition switch: ON (after initial check)
System voltage
15
Ground
At all times
0 V
17
Acceleration sensor ground
At all times
0 V
18
Acceleration sensor (lateral
acceleration) input
Ignition switch: ON
2.4 – 2.6 V
(horizontal position)
24
Wheel speed (RL) output
Vehicle stationary
1 V or less
Moving forward slowly
0 – 5 V
25
Ground
At all times
0 V
32
ABS-ECU backup power supply
At all times
System voltage
33
Wheel speed (FR) output
Vehicle stationary
1 V or less
Moving forward slowly
0 – 5 V
34
Stop lamp switch input
Stop lamp switch: ON
System voltage
Stop lamp switch: OFF
0 V
36
Diagnosis data input/output
When the MUT-
II
is connected
Serial communica-
tion with MUT-
II
possible
When the MUT-
II
is not connected
–
37
Valve relay output
Ignition switch:
ON
When relay is ON
0 V
ON
When relay is OFF
System voltage
38
Motor relay output
Ignition switch:
ON
When motor is energized
0 V
ON
When motor is deenergized
System voltage
40
Solenoid valve OUT (RL) output
Ignition switch: ON (after initial check)
System voltage
41
Solenoid valve OUT (FR) output
Ignition switch: ON (after initial check)
System voltage
42
Ground
At all times
0 V
ABS –
Troubleshooting
35B-33
Terminal
No.
Normally
Check requirement
Check item
44
Wheel speed (RR) output
Vehicle stationary
1 V or less
Moving forward slowly
0 – 5 V
47
Diagnosis changeover input
When the MUT-
II
is connected
0 V
When the MUT-
II
is not connected
System voltage
48
Valve relay monitor input
Ignition switch: ON (after initial check)
System voltage
49
Motor relay monitor input
Ignition switch:
ON
When motor is energized
0 V
ON
When motor is deenergized
System voltage
50
ABS warning lamp output
Ignition switch:
ON
When lamp is off
System voltage
ON
When lamp is on
0 V
51
Solenoid valve IN (RL) output
Ignition switch: ON (after initial check)
System voltage
52
Solenoid valve IN (FR) output
Ignition switch: ON (after initial check)
System voltage
LISTING OF RESISTANCE AND CONTINUITY ACROSS CONNECTOR TERMINALS ON HARNESS
SIDE
1.
Measure the resistance and check for continuity with the ignition switch in the “OFF” position and
ABS-ECU connector disconnected.
2.
Measure the resistance and check for continuity across terminals listed below.
3.
Fig. below shows the arrangement of terminals.
<EVOLUTION-IV>
Terminal No.
Signal name
Normally
1 – body ground
Solenoid valve IN (RR)
8.04 – 9.04
Ω
2 – body ground
ECU ground
Conducting
6 – 19
Wheel speed sensor (FL)
1.4 – 1.8 k
Ω
7 – 20
Wheel speed sensor (RR)
1.4 – 1.8 k
Ω
8 – 21
Wheel speed sensor (FR)
1.4 – 1.8 k
Ω
9 – 22
Wheel speed sensor (RL)
1.4 – 1.8 k
Ω
14 – body ground
Solenoid valve OUT (FL)
4.04 – 4.54
Ω
15 – body ground
Solenoid valve OUT (RR)
4.04 – 4.54
Ω
16 – body ground
Solenoid valve IN (FL)
8.04 – 9.04
Ω
18 – body ground
Acceleration sensor ground
Conducting
31 – body ground
ECU ground
Conducting
34 – body ground
Valve relay monitor
Conducting
35 – body ground
Motor monitor
Conducting
37 – body ground
Solenoid valve OUT (RL)
4.04 – 4.54
Ω
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