LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Plymouth >> 1987 >> Horizon Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EFC System >> DRIVEABILITY Tests >> Test 14 - Coolant Sensor Calibration Check
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 14 - Coolant Sensor Calibration Check

Fig 1: Coolant Sensor Terminals
G5758

Disconnect coolant sensor connector. Connect ohmmeter between terminals No. 1 and No. 3 of coolant sensor. Ohmmeter reading should be 400-6000 ohms. If resistance is not okay, replace coolant sensor. If resistance is okay, connect ohmmeter between coolant sensor terminals No. 1 and No. 2. Ohmmeter reading should be 176-3900 ohms. If resistance is okay, proceed to TEST 15  . If resistance is not okay, replace coolant sensor.