Isuzu 2000 Trooper Workshop Manual page 964

Step
1 Was the "On - Board Diagnostic (OBD) System Check"
performed?
2 Attempt to start the engine.
Does the engine start?
3 Check the meter fuse for the instrument cluster
ignitionfeed circuit.
Is the fuse OK?
4 Ignition "ON," probe the ignition feed circuit at
thecluster connector with a test light to ground.
Is the test light "ON?"
5 1. Ignition "OFF."
2. Disconnect the PCM.
3. Jumper the RPL driver circuit at the PCM connector
to ground.
4. Ignition "ON."
Is the RPL "ON?"
6 Check the PCM ignition feed and battery feed fuses
(15A engine fuse and 15 A PCM fuse).
Are both fuses OK?
7 1. Ignition "OFF."
2. Disconnect the PCM.
3. Ignition "ON."
4. Probe the ignition feed circuit at the PCM harness
connector with a test light to ground.
Is the test light "ON?"
8 Probe the battery feed circuit at the PCM harness
connector with a test light to ground.
Is the test light "ON?"
9 Check for a faulty PCM ground connection.
Was a problem found?
10 Check for damaged terminals at the PCM.
Was a problem found?
11 Check for an open RPL driver circuit between the PCM
and the RPL.
Was a problem found?
12 Substitute a known "good" relay for the PCM mainrelay.
Was the malfunction fixed?
13 Repair the open in the ignition feed circuit.
Is the action complete?
14 Locate and repair the open PCM battery feed circuit.
Is the action complete?
TROOPER 6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
No Reduced Power Lamp (RPL)
Action Value(s) Yes
— Go to Step 2
— Go to Step 3
Go to Step 4
—
— Go to Step 5
— Go to Step 10
— Go to Step 7
— Go to Step 8
Go to Step 9
—
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
6E–95
No
Go to OBD
System
Check
Go to Step 6
Go to Step 16
Go to Step 13
Go to Step 11
Go to Step 15
Go to Step 12
Go to Step 14
Go to Step 10
Go to Step 17
Go to Step 18
Go to Step 13
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