Crankshaft Sensor (Service Code 21)
The crankshaft sensor has no power source, and when
the engine stops, the crankshaft sensor generates no sig-
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
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-
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Crankshaft Sensor Connector [B]
Y lead (ECU terminal 36) [C]
Y/BK lead (ECU terminal 37) [D]
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection in the
Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation in the Fuel System (DFI)
Crankshaft Sensor Circuit
2. Crankshaft Sensor
SELF-DIAGNOSIS SYSTEM 17-45