ABS <4WD> ± Troubleshooting
35B-20
CHECK AT ABS-ECU
TERMINAL VOLTAGE CHECK CHART
1. Disconnect the ABS-ECU connector. (Refer to P. 35B-27.)
2. Use the special tool to measure the voltage between each
terminal and earth (terminal No.23).
3. The terminal layout is shown in the illustration.
Terminal No. Check item Checking requirements Normal condition
3 Stop lamp switch input Ignition switch: ON
Stop lamp switch: ON System voltage
Stop lamp switch: OFF 1 V or less
7 Input from G sensor Ignition switch: ON 2.4 ± 2.6 V
Vehicle is horizontal
8 ABS warning lamp
relay transistor output
Ignition switch: ON
When the lamp is
switched off
2 V or less
When the lamp is illu-
minated
System voltage
9 MUT-II
When the MUT-II is connected Serial communication
with MUT-II
When the MUT-II is not connected 1 V or less
10 ABS-ECU power
pp
Ignition switch: ON System voltage
supp
y
Ignition switch: START 0 V
19 Diagnosis changeover
p
When the MUT-II is connected 0 V
npu
When the MUT-II is not connected Approx. 12 V
20 G sensor earth Always 0 V
22 Solenoid valve power
supply
Always System voltage
24 Motor power supply Always System voltage
Check connector
MB991547
ABS-ECU
Body side harness
Earth terminal