Pin Voltage Tests
Cruise control ECU pin testing chart is used for diagnosing intermittent symptoms and faults that are unable to be resolved during self-diagnostics. Pin test ensures cruise control ECU is receiving and transmitting proper voltage signals. To perform pin voltage test, remove cruise control ECU with connector attached. Test cruise control ECU voltages by backprobing ECU connector using a DVOM with ignition switch in ON position, unless otherwise specified. If voltage readings are as specified, cruise control ECU may be faulty. See Figure and Fig 1 .