Test 31, Check VRS For Open Circuit
With key off and ECA disconnected, set DVOM to 20-k/ohm scale. Measure resistance between breakout box pins No. J32 (VRS S) and J48 (VRS E).
If resistance is less than 2025 ohms, replace VR sensor. Remove all test equipment, and reconnect all components. Clear Continuous Memory, and check for fault codes. If resistance is greater than 2025 ohms, repair open circuit. Remove all test equipment, and reconnect all components. Clear Continuous Memory, and check for fault codes.
NOTE:
Tests 32-37 may also be used for diagnosing KOEO Code 16, Continuous Memory Code 18 and/or "CHECK ENGINE" light on: IDM failure.
CAUTION:
DO NOT connect EEC-IV ECA to EEC-IV breakout box while performing EDIS diagnosis unless so instructed.