Isuzu 1999 RODEO Workshop Manual page 1683

6E2–440
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
Step
17 1. Check ignition coils for cracks or carbon tracking.
2. If a problem is found, repair as necessary.
Was a problem found?
18 Using a Tech 2, monitor the TP angle with the engine
idling.
Is the TP angle at the specified value and steady?
19 1. Check the PCV valve for proper operation. Refer to
Crankcase Ventilation System .
2. If a problem is found, repair as necessary.
Was a problem found?
20 1. Check the transmission range switch circuit. Use a
Tech 2 and be sure the Tech 2 indicates that the
vehicle is in drive with the gear selector in drive or
overdrive.
2. If a problem is found, diagnose and repair the
transmission range switch as necessary (refer to
4L30-E Automatic Transmission Diagnosis ).
Was a problem found?
21 1. Check the following engine mechanical items.
Refer to Engine Mechanical for diagnosis
procedures:
f
Low compression
f
Sticking or leaking valves
f
Worn camshaft lobe(s)
f
Camshaft drive belt slipped or stripped
f
Incorrect valve timing
f
Worn rocker arms
f
Broken valve springs
2. If a problem is found, repair as necessary.
Was a problem found?
22 1. Check for faulty motor mounts. Refer to Engine
Mechanical for inspection of mounts.
2. If a problem is found, repair as necessary.
Was a problem found?
23 1. Review all 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 butter
f
All electrical connections within a suspected
circuit and/or system
3. If a problem is found, repair as necessary.
Was a problem found?
Cuts Out, Misses Symptom (Cont'd)
Action Value(s) Yes
— Verify repair
0% Go to Step 19
— Verify repair
— Verify repair
— Verify repair
— Verify repair
— Verify repair
No
Go to Step 18
Refer to DTC
P0123 for
further
diagnosis
Go to Step 20
Go to Step 21
Go to Step 22
Go to Step 23
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Technical
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