LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 3.6L - DTCS P0440 To P04FC >> DTC Troubleshooting >> P0480-Cooling Fan 1 Control Circuit/Open - With A/C >> Fan 2 (Right) Is Completely Inoperative (Low And High Speed) - Any Or All Of The Following DTCS May Be Present (P0482, P0695 Or P0696)

Fan 2 (Right) Is Completely Inoperative (Low And High Speed) - Any Or All Of The Following DTCS May Be Present (P0482, P0695 Or P0696)

  1. Check the fuse for radiator fan 2 in the PDC.
    1. If the fuse is open, continue to step 2.
    2. If the fuse is good, this would indicate that the output circuits are not shorted and the fan is not internally shorted or drawing excessive current. continue to step 3 to test for an open in the circuitry or motor.
  2. Replace the fuse and retest. Operate the fan on high speed to check the fan and circuits.
    1. If the fuse opens immediately when the fan is actuated on high speed, use the wiring information to check both output circuits (A112 and N24) for a short to ground. If the output circuits (A212 and N23) are not shorted to ground, replace the radiator fan motor.
    2. If the fuse does not open immediately, check the amperage draw of the fan. Monitor the in-rush current and steady state current of the fan when high speed operation is initiated. A faulty fan can draw excessive current and damage a fuse. The current may not stay above the fuse threshold but may stay very close to the fuse threshold and slowly damage the fuse and eventually cause an open.
  3. Remove the radiator fan 2 low relay from the PDC. Turn the ignition on. Check for voltage on terminal 30 at the radiator fan 2 low relay connector in the PDC. Battery voltage should be present.
    1. If no voltage is present, verify a good fused B+ connection at the PDC. If the connection is good, and the fuse was not open, replace the PDC in accordance with the Service Information.
    2. If Battery voltage is present, continue to step 4.
  4. Connect a fused jumper between terminal 30 and 87 at the relay connector in the PDC. Back probe and measure the voltage on the radiator fan relay 2 output circuit (A112) at the PDC connector. Battery voltage should be present.
    1. If battery voltage is not present, replace the PDC in accordance with the Service Information.
    2. If battery voltage is present, continue to step 5.
  5. Measure the voltage on the radiator fan relay 2 output circuit (A112) at the radiator fan 2 resistor. Remove radiator fan 2 high relay and measure the voltage at terminals 30 and 87. There should be battery voltage to each of the terminals.
    1. If battery voltage is not present, repair the (A112) circuit for an open.
    2. If battery voltage is present, continue to step 6.
  6. Disconnect the radiator fan 2 connector and load test the ground circuit at the radiator fan harness connector. Read the CIRCUIT LOAD TESTING PROCEDURE for information on building a simple load test tool and for additional load testing information and alternative methods of load testing or voltage drop testing a circuit. Refer to CIRCUIT LOAD TESTING PROCEDURES .
    GC0174957Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    A way to verify that there is no resistance in the circuit being tested is to perform a simple voltage drop test across the 3156 bulb of the load test tool. The voltage drop across the bulb should be equal to the voltage reading across the Battery terminals if there is no resistance in the circuit being tested.

    1. If the ground circuit fails load testing, repair the chassis ground for the radiator fan.
    2. If the ground circuit tests good, continue testing in step 7.
  7. Load test the battery supply to the fan at the fan harness connector. Re-install the radiator fan 2 high relay and connect a 12-volt test light between ground and the control circuit to operate the fan at high speed for load testing the circuit. Do not use low speed fan operation because of the resistor in the low speed circuitry.
    GC0174938Courtesy of CHRYSLER GROUP, LLC
    1. If the battery supply circuit tests good, replace the radiator fan 2 in accordance with the Service Information.
    2. If the battery supply circuit fails load testing, check the (N24) circuit for an open or high resistance between the radiator fan harness connector and the harness splice. If the (N24) circuit tests good, verify that the (A112) does not have high resistance.