Isuzu 4ja1 - 1. Hard Starting

TROUBLESHOOTING 6 – 3
1. Hard Starting
Inspect the following items before diagnosis.
1. The battery conditions.
The terminal connection condition.
The battery charge condition or battery power weakness.
2. The fan belt loosen or broken.
3. The main fuse condition (open or not).
4. Fuel quantity level.
1–1 Starter motor inoperative
Step Action Value(s) Yes No
1 Check the starter switch.
Does the starter switch work?
—
Go to Step 2
Repair or
replace the
starter switch
2 Check the starter relay.
Does the starter relay work?
—
Go to Step 3
Repair or
replace the
starter relay
3 Check the magnetic switch.
Does the magnetic switch work?
—
Go to Step 4
Repair or
replace the
magnetic
switch
4 Check the pinion gear condition on the starter motor.
Was the condition normal?
—
Go to Step 5
Replace the
pinion gear
5 Check the brush wear or brush spring weakness.
Was the condition normal?
—
Replace the
starter motor
assembly
Repair or
replace the
brush or brush
spring
1-2 Starter motor operates but engine does not turn over
Step Action Value(s) Yes No
1 Check the engine internal seizure.
Was the engine seized?
—
Repair or
replace seized
parts
Check other
DTC by Tech
2 and go to
indicated DTC