LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test QB - KOEO Or Continuous Memory Service Code 15 >> Test QB: Step 3
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test QB: Step 3

3) Check KAPWR Circuit Voltage  Turn key off and wait 10 seconds. Disconnect ECA 60-pin connector and inspect for damaged pins and loose wires. Service as necessary. Install breakout box, leaving ECA disconnected. Set DVOM on 20-volt scale. Connect DVOM positive test lead to Test Pin No. 1 and negative test lead to pins No. 40 or 60 at the breakout box. With KOEO, observe voltage reading. If reading is less than 10.5 volts, repair open circuit. Reconnect ECA and repeat QUICK TEST. If reading is 10.5 volts or more, replace ECA and remove breakout box. Repeat QUICK TEST.