GENERAL SYSTEM DIAGNOSTICS SERVICE MANUAL NUMBER 23
Page 5E-4 90-861326--1 MARCH 1999
J-2
a
J-2 Output Connector (Rear)
a-Shaded Area Denotes Pin Connector Location
IMPORTANT: The following conditions must be met before testing.
1. Engine at operating temperature.
2. Ignition on or engine running.
3. Scan tool not connected.
THESE NOTES APPLY TO FOLLOWING ECM CONNECTOR AND SYMPTOM CHARTS
The “B+” Symbol indicates a system voltage (battery).
NOTE 1: Battery voltage for first two seconds, then 0 volts.
NOTE 2: Varies with temperature.
NOTE 3: Varies with manifold vacuum.
NOTE 4: Varies with throttle movement.
NOTE 5: Less than .5 volt (500 mV).
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