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FUEL SYSTEM (DFI) 3-67
Crankshaft Sensor (Service Code 21)
The crankshaft sensor has no power source, and when
the engine stops, the crankshaft sensor generates no sig-
nals.
Crankshaft Sensor Removal/Installation
•
Refer to the Crankshaft Sensor Removal/Installation in
the Electrical System chapter.
Crankshaft Sensor Resistance Inspection
•
Refer to the Crankshaft Sensor Inspection in the Electrical
System chapter.
If the reading is within the standard, check the peak volt-
age (see Crankshaft Sensor Peak Voltage Inspection).
Crankshaft Sensor Peak Voltage Inspection
•
Refer to the Crankshaft Sensor Peak Voltage Inspection
in the Electrical System chapter.
If the reading is within the standard, remove the ECU and
check the wiring for continuity between main harness con-
nectors.
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Crankshaft Sensor Connector [B]
Y/BK lead (ECU terminal 37) [C]
Y lead (ECU terminal 48) [D]
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).
Crankshaft Sensor Circuit
1. Crankshaft Sensor
2. ECU
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