240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
-Ignition off.
-Remove the connector at the EGR temperature sensor.
Connect an ohmmeter between terminal 2 in the temperature sensor connector and GND.
The ohmmeter should read approx. 0 OHMS.
If the reading is OK
-Check the signal wiring FL3.
If the reading is incorrect
-Check the wiring between terminal 2 in the temperature sensor connector and GND for breaks.
FL3
Checking The Signal Wiring
-Ignition on.
Connect a voltmeter between terminals 1 and 2 in the temperature sensor wiring connector.
The voltmeter should read approx. 5 V.
If the voltmeter reads 0 V.
-Check the signal wiring for breaks or grounding.
If the voltmeter reads approx. 5 V.
-Try using a new EGR temperature sensor (PTC type).
If the voltmeter reads over 5 V.
-Check the wiring between terminal 1 on the sensor and #22 on the control module for short circuiting.
-Continue with Checking the EGR temperature sensor signal FL4.
FL4
Checking The EGR Temperature Sensor Signal
If the signal wiring has been short circuited the EGR temperature sensor may have broken. Check the EGR temperature sensor in accordance with the
following.
Connect the connector to the EGR temperature sensor.
-Switch on the ignition.
