How to Use Pinpoint Tests

Do not run any of the following Pinpoint Tests unless you are so instructed by a Quick Test. Each Pinpoint Test assumes that a fault has been detected in the system with direction to enter a specific repair routine. Doing any Pinpoint Test without direction from the Quick Test may produce incorrect results and replacement of non-defective components. Correct test results for the Quick Test are dependent on the proper operation of related components/systems. It may be necessary to correct any defects in these areas before passing the Quick Test.

Do not replace any parts unless the test results indicate they should be replaced.

When more than one diagnostic trouble code is received, always start service with the first code received.

Do not measure voltage or resistance at the anti-lock brake control module or connect any test indicators to it, unless otherwise specified.

Isolate both ends of a circuit, and turn key OFF whenever checking for shorts or continuity unless otherwise specified.

Disconnect solenoids and switches from the harness before measuring for continuity, resistance, or energizing by way of 12 volt source.

In using the Pinpoint Tests, follow each step in order, starting from the first step in the appropriate test. Follow each step until the fault is found.

After completing any repairs to the ABS, verify all components are properly reconnected and repeat the functional Quick Test (Retest). Quick Check/Symptom Tests