240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
Crankshaft Position Sensor: Testing and Inspection
FE. DIAGNOSTIC TROUBLE CODE (DTC) 2-1-4 DI EZ 116 K
2-1-4 RPM sensor signal absent intermittently
DTC Conditions:
RPM sensor signal absent intermittently
Causes of fault:
Damaged or scratched flywheel/drive plate. Loose contact in connections. Incorrectly installed RPM sensor. (Too large a gap between RPM sensor and
flywheel/drive plate).
Fault symptoms:
Engine will not start, engine overheating, engine running roughly.
FE1
Checking The RPM Sensor
-Ignition off.
Connect an ohmmeter between 1 and 2 on the RPM sensor.
RPM sensor 1 389 567-7 (early models):
The ohmmeter should read approx. 240 OHMS and a maximum of 400 OHMS when the engine is warm.
RPM sensor 3 547 847-8 (later models):
The ohmmeter should read approx. 170 OHMS and a maximum of 350 OHMS when the engine is warm.
If the reading is OK.
-Clean the RPM sensor connector and treat it for corrosion.
-Continue with Connecting the test box FE2.
If the reading deviates
-Try using a new RPM sensor.
-Clean the RPM sensor connector and treat it for corrosion.
