Mitsubishi LANCER EVOLUTION-IV 1998

REAR AXLE – Troubleshooting <AYC>
27-25
Terminal
No.
NormallyCheck requirementCheck item
18 TPS Ignition switch:
ON
Accelerator pedal: Fully closed 0.3 – 1.0 V
ON
Accelerator pedal: Fully open 4.5 – 5.0 V
23 Diagnosis data input/output 1 V or less
24 Idle position switch Ignition switch:
ON
Accelerator pedal: Fully closed 2 V or less
ON
Accelerator pedal: Fully open 4.5 – 5.0 V
25 Accumulator pressure
switch
Ignition switch:
ON
Accumulator internal pressure:
Low
2 V or less
Accumulator internal pressure:
High
Battery voltage
26 ECU ground At all times 0 V
31 AYC-ECU power supply Ignition switch: ON Battery voltage
Ignition switch: OFF 0 V
35 AYC motor relay Ignition switch:
ON
When motor is energized Battery voltage
ON
When motor is deenergized 2 V or less
36 AYC warning lamp Ignition switch:
ON
When lamp is OFF Battery voltage
ON
When lamp is ON 2 V or less
37 Directional control valve
(right)
Ignition switch:
ON
Right clutch: ON Battery voltage
(
r
i
g
ht)
ON
Right clutch: OFF 0 V
38 Proportioning valve Ignition switch:
ON
AYC-ON 0 V to battery volt-
age
AYC-OFF 0 V
39 ECU backup power supply At all times Battery voltage
45 Directional control valve
(le
f
t)
Ignition switch:
ON
Left clutch: ON Battery voltage
(l
e
ft)
ON
Left clutch: OFF 0 V
46 ECU ground At all times 0 V
NOTE
*1: Indicates the vehicles with ABS.