5-7
5
Primary Winding
1. Connect the red tester lead to either terminal; then
connect the black tester lead to the other terminal.
2. The meter reading must be within specification.
Secondary Winding
1. Remove the plug cap from the high tension lead;
then connect the red tester lead to the high tension
lead.
2. Connect the black tester lead to either primary
connector.
FI519B
3. The meter reading must be within specification.
NOTE: If the meter does not show as specified,
replace ignition coil.
Spark Plug Cap
1. Connect the red tester lead to one end of the cap;
then connect the black tester lead to the other end
of the cap.
AR603D
2. The meter reading must be within specification.
NOTE: If the meter does not read as specified,
replace the spark plug cap.
PEAK VOLTAGE
NOTE: All of the peak voltage tests should be
made using the Fluke Model 77 Multimeter with
Peak Voltage Reading Adapter. If any other type of
tester is used, readings may vary due to internal
circuitry.
NOTE: The battery must be at full charge for
these tests.
Primary Voltage - ECU
1. Set the meter selector to the DC Voltage position;
then disconnect the two wires from the coil.
2. Connect the red tester lead to the orange wire and
the black tester lead to the blue/white wire.
3. Turn the ignition switch to the ON position. The
meter must show battery voltage.
EFI Sensors/
Components
CRANKSHAFT POSITION (CKP)
SENSOR
To test the CKP sensor, see Stator Coil/Crankshaft
Position (CKP) Sensor in this section.
MANIFOLD ABSOLUTE PRESSURE/
INLET AIR TEMPERATURE
(MAP/IAT) SENSOR
1. Disconnect the MAP/IAT connector from the sen-
sor located on top of the throttle body.
2. Select DC Voltage on the tester and turn the igni-
tion switch to the ON position.
3. Connect the black tester lead to the black/pink
wire and the red tester lead to the orange/blue
wire. The meter should read 4.5-5.5 DC volts. If
the meter does not read as specified, check the
ECU connector or wiring.
4. Connect the MAP/IAT to the harness; then using
MaxiClips, connect the red tester lead to the
brown/white wire and the black tester lead to the
black/pink wire. With the engine running at idle
speed, the meter should read approximately 2.5
DC volts (MAP sensor signal).
5. Connect the red tester lead to the green/red wire.
With the engine at idle and at room temperature
(approximately 60° F), the meter should read
approximately 2.9 DC volts.
NOTE: If the meter does not read as specified,
replace the sensor.
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