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Cold Start Injector Thermal Timer (Prizm)
- With engine coolant less than 86°F (30°C), disconnect cold start injector thermal timer electrical connector. Using an ohmmeter, ensure resistance across terminals "STJ" and "STA" is 20-40 ohms. See Fig 1
.
- Start engine and bring to normal operating temperature. Ensure resistance across terminals "STJ" and "STA" is 40-60 ohms. Ensure resistance across terminals "STA" and ground is 20-80 ohms. Replace thermal timer if not as specified.
Courtesy of GENERAL MOTORS.