Circuit Testing: Notes

CAUTION: On vehicles equipped with Supplemental Restraint System (SRS), SRS wiring harness is routed close to instrument cluster, steering wheel and related components. All SRS wiring harnesses and connectors are Yellow. DO NOT use electrical test equipment on these circuits. Before working on cruise control components, disable air bag system. See AIR BAG RESTRAINT SYSTEM article in ACCESSORIES & EQUIPMENT.

WARNING: Wait at least 90 seconds after disabling SRS. Back-up power circuit capacitor maintains system voltage for about 90 seconds after battery is disconnected. Servicing air bag system before 90 seconds may cause accidental air bag deployment and possible personal injury.

NOTE: Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Voltage readings may vary slightly due to battery condition or charging rate. When checking harness connectors always backprobe connectors. If necessary to check connector from front side (without harness), use care not to bend connector terminals.