Isuzu N-Series. Service manual — part 282
HSA (HILL START AID) 5A5-7
HSA Off Switch
The HSA is released with this switch depressed.
(HSA off warning light comes on at this time.)
HSA Adjust Switch
Used for fine adjustment of the clutch pedal position to
release the HSA brake force when operating to start the
vehicle. Also, used for initial adjustment.
N5A3009E
N5A3010E
HSA
ADJUST
N5A3011E
5A5-8 HSA (HILL START AID)
HSA Reset Switch
Used when the timing to release the HSA brake force is
shifted considerably when operating to start the vehicle
after clutch replacement or clutch play adjustment.
HSA Indicator Lamp
The HSA indicator lamp comes ON when HSA operat-
ing, and OFF when not operating. Also, it blinks sy-
cronized with alarm. It blinks or illuminates when a
malfunction occurs. Also used for while diagnosing.
N5A3012E
N5A3013E
HSA (HILL START AID) 5A5-9
Parts Location
B-1
B-7
F-28 FUSE
FL-1, FL-2 FUSIBLE LINK
J-128 HBB LEVEL SW
P-1~P-4 BATTERY
P-5
F-4, F-5, F-16, F-17, F-19
FUSE BOX ASM
H-3
B-318
HSA OFF SW
B-105
HSA RESET SW
H-12
H-10
B-79
DATA LINK
CONNECTOR
B-106
HSA ADJUST SW
B-51, B-52,
METER
L-2
ROOM LIGHT
N-2
DOOR SW RH
B-67
STARTER SW
N-7
DOOR SW LH
J-32
VEHICLE SPEED SENSOR
J-50
NEUTRAL SW
X-32 DIODE
X-33 DIODE
N-6
PARKING BRAKE SW
B-285
HSA CONTROL UNIT
J-155
HSA VALVE
B-102
CLUTCH FLUID PRESSURE SW
H-5~H-7
B-66
STOP LIGHT SW
B-103
CLUTCH SENSOR
N5A3070E
5A5-10 HSA (HILL START AID)
Circuit Diagram
F-17
10A
3B/Y
0.5B/O
0.5B/O
5W/B
0.5B/Y
0.5W/R
0.3GY/L
0.3GY/R
0.3GY/B
0.3SB
0.5B/O
0.5B/O
0.5B/O
0.5G
0.5G/Y
0.5G
0.5GY/R
1.25GR/B
0.3GY/B
0.5GY/B
0.5GR/B
0.5Y
0.5GY/R
0.5GY/R
0.5G
4
3
X-32
5W/B
8W/B
2
H-6
X-32
3W/B
8B
B-79
7
5
B-79
B-79
11
0.3B/W
0.3SB
B-79
4
METER
NEES (IG) / HSA
DATA LINK CONNECTOR
6
21
HSA CONTROL UNIT
B-285
15
B-285
B-285
0.5B
23
B-285
0.5B
3
B-285
0.5B
1.25B
30
B-285
7
B-285
0.5B/O
14
B-285
29
B-285
19
B-285
1
B-285
1
H-10
2
L-2
0.5R
0.5R
1
L-2
3
H-10
3
H-3
1
N-7
ST
ACC
ON
OFF
3B/Y
STARTER SWITCH
F-16
10A
3
B-67
3W/L
3W/L
1
H-7
2
B-67
AUDIO (B)
DOOR LOCK
F-4
15A
STOP LIGHT
F-5
10A
ENG. (BACK UP)
HSA
F-19
10A
MAIN
FL-1 100A/120A
KEY SW
FL-2 40A
STOP LIGHT
ROOM LIGHT SWITCH
ROOM LIGHT
DIODE
DOOR SWITCH LH
1.25GR/R
3
H-12
1
N-2
DOOR SWITCH RH
3
L-2
P-1
P-2
P-3
P-4
P-5
FRAME
STOP LIGHT SWITCH
B-66
B-66
1
2
HSA RESET SWITCH
HSA ADJUST SWITCH
SLOW
FAST
B-105
B-105
4
6
B-106
3
B-106
2
B-106
1
CLUTCH FLUID PRESSURE SWITCH
B-102
B-102
1
2
B-1
FRAME LH (FRONT)
B-7
3B
2B
HEADLIGHT BRACKET (LH)
N5A3068E
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