Instructions For Using Pinpoint Tests
- DO NOT run any pinpoint tests unless instructed by QUICK TEST. Each pinpoint test assumes that a fault has been detected in the system with direction to enter a specific service routine. Doing any pinpoint test without direction from the QUICK TEST may produce incorrect results and cause replacement of non-defective components.
- DO NOT replace any parts unless the test results indicates that they should be replaced.
- When more than one (1) service code is received, always start service with first code received.
- DO NOT measure voltage or resistance at ECA or connect any test lights to it, unless otherwise specified.
- Isolate both ends of a circuit, and turn ignition key off whenever checking for shorts or continuity, unless otherwise specified.
- Disconnect solenoids and switches from harness before measuring for continuity, resistance, or energizing by way of 12-volt source, unless otherwise instructed.
- In using the pinpoint test, follow each step in order, starting from the first step in appropriate test. Follow each step until fault is found.
- After completing any service to IVSC system, verify that all components are properly reconnected, and repeat the QUICK TEST.
- An open is defined as any resistance reading greater than 5 ohms unless otherwise specified. A short is defined as any resistance reading less than 10,000 ohms to ground, unless otherwise specified. See Fig 1 .