Isuzu N-Series. Manual — part 285
HSA (HILL START AID) 5A5-19
DTC 03 Back-up Fuse Open
Step
Action
Value
YES
NO
1
Check the fuse “F-19”.
Is the fuse “F-19” normal?
—
2
Check for battery voltage between the HSA
control unit connector terminal 29 “B-285” and
the body ground.
Does it have the battery voltage?
20 V or more
3
Repair the short circuit in the circuit and the
parts connected to the fuse “F-19”.
Is the repair completed?
—
4
Install a new fuse with the HSA control unit
connector “B-285” disconnected.
Is the fuse blown?
—
5
Connect the connector of the HSA control
unit.
Is the fuse blown?
—
6
Check the connector.
Is the connector of the HSA control unit nor-
mal?
—
7
Repair the open circuit between the fuse “F-
19” and 29 “B-285”.
Is the repair completed?
—
8
Replace the HSA control unit.
Is the replacement completed?
—
9
Repair the connector.
Is the repair completed?
—
10
After HSA repair, make sure no trouble is
found during self-diagnosis.
Is this step completed?
—
—
5A5-20 HSA (HILL START AID)
N5A3021E
HSA (HILL START AID) 5A5-21
DTC 08 Clutch Sensor Output Voltage Fault
Step
Action
Value
YES
NO
1
Check the clutch sensor.
Is the clutch sensor normal?
—
2
Measure the resistances between the HSA
control unit and the clutch sensor connector
terminals 24 “B-285” and 3 “B-103”, 25 “B-
285” and 2 “B-103”, 26 “B-285” and 1 “B-103”.
Are all the resistances less than 5
Ω?
Less than 5
Ω
3
Replace the clutch sensor.
Is the replacement completed?
2k
Ω±400
4
Replace the HSA control unit.
Is the replacement completed?
—
5
Repair the open circuit of the circuit that has
resistance of 5
Ω or more.
Is the repair completed?
—
6
After HSA repair, make sure no trouble is
found during self-diagnosis.
Is this step completed?
—
—
5A5-22 HSA (HILL START AID)
N5A3022E
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