REAR AXLE –
Troubleshooting <AYC>
27-28
CHECK AT AYC-ECU TERMINALS
TERMINAL VOLTAGE LISTING
D
The voltage is to be measured across each terminal and ground terminal.
D
Fig. below shows the arrangement of the terminals.
Terminal
No.
Check item
Check requirement
Normally
1
Lateral acceleration sensor
Ignition switch: ON
2.4 – 2.6 V
(horizontal position)
2
Longitudinal acceleration
sensor ground
Lateral acceleration sensor
ground
At all times
0 V
3
Longitudinal acceleration
sensor
Ignition switch: ON
2.4 – 2.6 V
(horizontal position)
4
Steer sensor (ST-2)
Engine: Idle speed
Turn steering wheel slowly.
0 V
↔
approx. 3 V
flashing
5
Steer sensor (ST-1)
Engine: Idle speed
Turn steering wheel slowly.
0 V
↔
approx. 3 V
flashing
6*
1
FR wheel speed
Vehicle stationary
1 V or less
Forward vehicle slowly.
0 – 5 V
7*
1
FL wheel speed
Vehicle stationary
1 V or less
Forward vehicle slowly.
0 – 5 V
8*
1
RR wheel speed
Vehicle stationary
1 V or less
Forward vehicle slowly.
0 – 5 V
9*
1
FL wheel speed
Vehicle stationary
1 V or less
Forward vehicle slowly.
0 – 5 V
10
Diagnosis selection input
When MUT
-II
is connected
1 V or less
When MUT
-II
is disconnected
System voltage
11
Stop lamp switch
Ignition switch:
ON
Stop lamp switch: ON
System voltage
ON
Stop lamp switch: OFF
1 V or less
12*
1
ABS monitor
When ABS monitor is activated
System voltage
When ABS monitor is deactivated
1 V or less