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Isuzu
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1989
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Impulse L4-2.3L (4ZD1)
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Repair and Diagnosis
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A L L Diagnostic Trouble Codes ( DTC )
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Testing and Inspection
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Manufacturer Code Charts
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Engine Control System
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DTC 21
DTC 21
DIAGNOSTIC CHART
Code 21 Diagnostic Chart:
THROTTLE VALVE SWITCH INSPECTION PROCEDURE
Throttle Valve Switch Inspection Procedure:
