Test Tb: Step 2

2) Check Continuity of Vehicle Harness Circuits  With key off, install breakout box. Leave ECA and transmission bulkhead connector (A4LD solenoids) disconnected. Set DVOM on 200-ohm scale. Measure resistance between test pins No. 37 and 57 at the breakout box and VPWR circuit pin of the vehicle harness connector at the transmission. Measure resistance between the appropriate ECA signal output pin (No. 52 or 53) at the breakout box and same circuit at the transmission vehicle harness connector.