PCC1302 Command fault code 195 engine Coolant level sensor signal is out of range – shorted high.
Related Contents:
2023 InPower 14.5 Service Tool Diagnostic Software+INCAL 2023.06
Cummings INLINE6 Diagnostic Kit
Possible Causes:
1. Faulty coolant level sensor connections
2. Faulty coolant level sensor
3. Faulty engine harness
4. Faulty extension harness
NOTICE
Part Number 3822758 – Male Deutsch/AMP/Metri-Pack test lead
Part Number 3822917 – Female Deutsch/AMP/Metri-Pack test lead
Diagnosis and Repair:
1. Faulty coolant level sensor connections
a. Inspect the coolant level sensor and the harness connector pins.
a. Disconnect the engine harness connector from the coolant level sensor.
b. Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c. Inspect for evidence of moisture in or on the connector.
d. Inspect for missing or damaged connector seals.
e. Inspect for dirt or debris in or on the connector pins.
- Faulty coolant level sensor
a. Check the resistance of the sensor
a. Disconnect the engine harness connector from the coolant level sensor.
b. Measure the resistance between the coolant level sensor signal pin and the coolant level sensor return pin. - Faulty engine harness
a. Inspect the engine harness and the extension harness connector pins.
a. Disconnect the engine harness from the extension harness.
b. Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c. Inspect for evidence of moisture in or on the connector.
d. Inspect for missing or damaged connector seals.
e. Inspect for dirt or debris in or on the connector pins. - Check for a short circuit from pin to pin.
a. Disconnect the engine harness connector from the extension harness.
b. Disconnect the engine harness from the coolant level sensor.
c. Disconnect the engine harness from all sensors that have a shared return with the coolant level sensor. Measure the resistance from the intake manifold temperature return pin on the engine harness inline connector to all other pins in the engine harness inline connector.
d. Measure the resistance from the coolant level sensor signal pin on the engine harness inline connector to all other pins in the engine harness inline connector.
e. If all measurements are greater than 100k Ohms, then the resistance is correct. - Check for an open circuit.
a. Disconnect the engine harness connector from the extension harness.
b. Disconnect the engine harness from the coolant level sensor. c. Measure the resistance from the coolant level sensor return pin on the engine harness inline connector to the coolant level sensor return pin at the engine harness sensor connector.
d. Measure the resistance from the coolant level sensor signal pin on the engine harness inline connector to coolant level sensor signal pin at then engine harness sensor connector.
e. If the measurement is less than 10 ohms, then the resistance is correct. - Faulty extension harness
a. Inspect the extension harness pins.
a. Disconnect the extension harness.
b. Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c. Inspect for evidence of moisture in or on the connector.
d. Inspect for missing or damaged connector seals.
e. Inspect for dirt or debris in or on the connector pins. - Check for an open circuit.
a. Disconnect the extension harness from the engine harness.
b. Measure the resistance from the intake manifold temperature return pin on the
extension harness connector to the intake manifold temperature return pin at the
extension harness inline connector.
c. Measure the resistance from the coolant level sensor signal pin on the extension
harness connector to the coolant level sensor signal pin at then engine harness
inline connector. - Check for a short circuit from pin to pin.
a. Disconnect the extension harness from the engine harness.
b. Measure the resistance from coolant level sensor return pin on the extension harness connector to all other pins in the extension harness connector.
c. Measure the resistance from the coolant level sensor signal pin on the extension harness connector to all other pins in the extension harness connector.
d. If all measurements are greater than 100k ohms, then the resistance is correct.
