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Home >> Toyota >> 1990 >> Pickup Base, 22R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4-CYL CARBURETED >> Diagnostic Circuit Check

Diagnostic Circuit Check

Fig 1: Diagnostic Circuit Check (22R)
G118756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CAUTION: Perform all voltage measurements with ECU harness connector install. Use high-impedance digital voltmeter (10,000 ohm/volt minimum). Verify battery voltage is greater than 11 volts.
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