Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 679
5A–12
BRAKE CONTROL SYSTEM
EHCU Connector Pin-out Checks
D
Disconnect Electronic Brake Control Module.
D
Perform checks with high impedance digital
multimeter J-39200 or equivalent.
No.
Circuit to be Tested
Ignition
Switch
Position
Multimeter
Scale/Range
Measure be-
tween Pin
Number
Nominal Value
Note
1
Ignition enable
OFF
20DCV
8 (+), 15 (–)
0V to 0.1V
ON
20DCV
8 (+), 15 (–)
11.5V to 14.5V
2
Stop light switch
OFF
20DCV
10, 15
10.5V to 14.5V
Press brake pedal
3
Ground connection
OFF
200
W
12, Ground
15, Ground
Less than 2
W
4
FL speed sensor
OFF
2k
W
20, 21
1.3k to 1.9k
W
Internal Resistance
OFF
200k
W
20, 15
more than
100k
W
Insulation Resistance
OFF
200mACV
20, 21
more than
200mV
Turn wheel at 1RPS
5
FR speed sensor
OFF
2k
W
4, 5
1.3k to 1.9k
W
Internal Resistance
OFF
200k
W
4, 15
more than
100k
W
Insulation Resistance
OFF
200mACV
4, 5
more than
200mV
Turn wheel at 1RPS
6
RL speed sensor
OFF
2k
W
22, 23
1.3k to 1.9k
W
Insulation Resistance
OFF
200k
W
22, 15
more than
100k
W
Internal Resistance
OFF
200mACV
22, 23
more than
200mV
Turn wheel at 1RPS
7
RR speed sensor
OFF
2k
W
2, 3
1.3k to 1.9k
W
Internal Resistance
OFF
200k
W
2, 15
more than
100k
W
Insulation Resistance
OFF
200mACV
2, 3
more than
200mV
Turn wheel at 1RPS
8
G-sensor
ON
26, 8
1k to 2k
W
Horizontal vehicle
9
Transmission Input
ON
20DCV
6 (+), 15 (–)
Less than 6V
(shift lever posi-
tion – L, R)
6.6 to 9.0V
(other shift
position)
A/T
Battery voltage 12V
More than 9.6V
(shift lever posi-
tion – 1, 2, R)
6.6 to 9.0V
(other shift
position)
M/T
Battery voltage 12V