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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test P - Spark Timing Check >> Test P: Step 7
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Test P: Step 7

7) Check SPOUT/SAW Voltage at ECA  With key off, and breakout box installed, connect ECA to breakout box. Reconnect TFI, DIS or EDIS module. Ensure timing switch on breakout box is in DIST position. Set DVOM on 20-volt AC scale. With KOEO, measure voltage between Test Pin No. 36 and battery negative post. If voltage is not to specification, replace ECA, remove breakout box and repeat QUICK TEST. If voltage is within specification, EEC-IV system is okay, remove breakout box, reconnect ECA and check ignition system. See I - SYS/COMP TESTS article in this section.

SPOUT/SAW VOLTAGE SPECIFICATIONS

Application Voltage
4.0L EDIS 0.6-1.8
All Others 4.0-10.0