Knock Sensor

Using an ohmmeter capable of reading greater than 10-megohm, test for continuity between knock sensor terminal and chassis ground. If continuity exists, circuit is okay. If continuity does not exist, replace knock sensor. If a fault is present in detonation sensor circuit, a Code 34 will be set in ECM memory. If a Code 34 is set, proceed to appropriate TESTS W/CODES article in the ENGINE PERFORMANCE Section.