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Pontiac
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1988
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J2000/Sunbird L4-121 2.0L
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Testing and Inspection
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Scan Tool Testing and Procedures
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Port Fuel Injection Models
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Function Selector Positions
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Transmission/Transaxle Gear Position Switches
Transmission/Transaxle Gear Position Switches
Indicates signal to ECM from switch. Indication may vary depending upon tool manufacturer. However, it is important that tool indicate change in status when gear is engaged.