Isuzu 1999 RODEO Workshop Manual page 1001

6E1–374 RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Step
11 Check the injector connections. If any of the injectors
are connected to an incorrect cylinder, correct as
necessary.
Was a problem found?
12 1. Perform the Injector Coil/Balance Test.
Was a problem found?
13 1. Check for fuel in the pressure regulator vacuum
hose.
2. If fuel is present, replace the fuel pressure regulator
assembly.
Was a problem found?
14 Check for proper ignition voltage output with spark
tester J 26792.
Was a problem found?
15 1. Remove spark plugs and check for gas or oil fouling,
cracks, wear, improper gap, burned electrodes of
heavy deposits.
2. If spark plugs are fouled, the cause of fouling must
be determined before replacing the spark plugs.
Was a problem found?
16 Check for a loose ignition control module ground.
Was a problem found?
17 Using a Tech 2, monitor the TP angle with the engine
idling.
Is the TP angle at the specified value and steady?
18 Check the PCV valve for proper operation.
Was a problem found?
19 Check for the following engine mechanical problems:
f
Low compression
f
Leaking cylinder head gasket
f
Worn or incorrect camshaft
f
Incorrect valve timing
f
Sticking or leaking valves
f
Camshaft drive belt slipped or stripped.
Was a problem found?
20 Check for faulty motor mounts. Refer to Engine
Mechanical for inspection of the mounts.
Was a problem found?
21 1. Review all the diagnostic procedures within this
table.
2. If all procedures have been completed and no
malfunctions have been found, review/inspect the
following:
f
Visual/physical inspection
f
Tech 2 data
f
Freeze Frame data/Failure Records buffer
f
All electrical connections within a suspected
circuit and/or system
Was a problem found?
Action Value(s) Yes
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
Go to Step 18
0%
— Verify repair
— Verify repair
— Verify repair
— Verify repair
No
Go to Step 12
Go to Step 13
Go to Step 14
Go to Step 15
Go to Step 16
Go to Step 17
For further
diagnosis,
refer to DTC
P0123
Go to Step 19
Go to Step 20
Go to Step 21
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