LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2018 >> Durango Pursuit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (3.6L - DTCS P2100 To U0121) >> DTC Troubleshooting >> P2AF6-Starter Relay 3 Stuck Off >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OTHER DTCS 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.

      Are there any Power Control Relay, PCR Control Relay or charging system DTCs present?

      Yes 

      • Perform the applicable diagnostic procedure(s). Refer to DTC INDEX .

      No 

      • Go To  2
  2. CHECK AUXILIARY BATTERY POSITIVE AND NEGATIVE CABLE CONNECTIONS 
    1. Perform a voltage drop test between the Battery Cable ends and the Battery posts on the Auxiliary Battery.

      Is the voltage drop less than 0.2 volts for both cables?

      Yes 

      • Go To  3

      No 

  3. CHECK THE AUXILIARY BATTERY CONDITION 
    1. Turn the ignition off.
    2. Disconnect the Negative Cable from the Auxiliary Battery.
    3. Use the (special tool #GR8-1220KIT-CHRY, AGM Battery Tester/Charger Station) or equivalent to load test the Battery.

      Did the Auxiliary Battery pass the load test?

      Yes 

      • Go To  4

      No 

  4. CHECK AUXILIARY BATTERY NEGATIVE CABLE GROUND 
    1. Check the Auxiliary Battery Negative Cable for a proper ground.

      Is the Negative Battery Cable grounded properly?

      Yes 

      • Go To  5

      No 

  5. CHECK AUXILIARY BATTERY POSITIVE CABLE 
    1. Reconnect the Negative Cable to the Auxiliary Battery.
    2. Perform a voltage drop test on the Auxiliary Battery Positive Cable between the cable end at the Auxiliary Battery post and the Remote Positive Jump Post connection.

      Is the voltage drop less than 0.25 volts?

      Yes 

      • Go To  6

      No 

      • Repair the Auxiliary Battery Positive Cable for high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  6. CHECK THE POWER CONTROL RELAY (Z909) GROUND CIRCUIT FOR HIGH RESISTANCE BY LOAD TESTING THE CIRCUIT 
    1. Disconnect the Power Control Relay C1 harness connector to isolate the ground circuit.
    2. Connect the positive lead of the load test tool to the positive side of the Battery.
    3. Connect the negative lead of the load test tool to the ground circuit at the Power Control Relay harness connector (A). Note:  refer to the diagram below.
    4. The bulb on the load test tool should be illuminated and bright if there is no resistance in the circuitry.
      NOTE:

      Why load test a circuit?  A load test is used to determine if a circuit is capable of carrying the amperage needed to perform properly. The 3156 bulb in the load tool illustrated, is a simple but effective method of testing circuit functionality. A 3156 Bulb has approximately 6.0 Ohms of resistance when the bulb is powered  and draws approximately 2.0 amps of current. 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 .

      NOTE:

      A 12-volt test light can be substituted for the load test tool, but only  if the test light draws enough current to effectively load test the circuit. Many high impedance test lights draw very little amperage (less than 0.1 amps) and are not reliable to load test a circuit. To perform a proper load test of a circuit, the tool being used should draw more than approximately 0.75 amps.

      NOTE:

      Why perform a Voltage Drop Test?  To verify with certainty there is not any resistance in the circuit being tested, perform a simple voltage drop test across the 3156 bulb of the load test tool. To do so perform the following:

      • 1. Connect the leads of a DVOM to the alligator clips on the load test tool while the load test tool is connected in series with the circuit.
      • 2. Compare the voltage drop across the bulb to the voltage reading across the Battery terminals.
      • 3. The voltage dropped across the bulb should be equal to the voltage reading across the Battery terminals if there is no resistance in the circuit being tested.

      Example:  2.0 Ohms of resistance in the circuit being tested will cause the voltage measurement across the bulb to be 25% less than when compared to Battery voltage. The reason for this is that the 2.0 Ohms in the circuit makes up 25% of the total circuit resistance of 8.0 Ohms. 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:

      Compare the brightness of the bulb in the load test tool to that of a direct connection to Battery.

      Is the load test bulb illuminated and bright?

      Yes 

      • Go To  7

      No 

      • Repair the Power Control Relay (Z909) Ground circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  7. CHECK THE POWER CONTROL RELAY (T760) CONTROL CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the PDC C3 harness connector.
    3. Check for continuity between ground and the Power Control Relay (T760) Control circuit at the Power Control Relay harness connector.

      Is there continuity between ground and the Power Control Relay (T760) Control circuit?

      Yes 

      • Repair the Power Control Relay (T760) Control circuit for a short to ground and check the fuses in the PDC.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  8
  8. ISOLATE AND LOAD TEST THE POWER CONTROL RELAY (T760) CONTROL CIRCUIT TO CHECK FOR HIGH RESISTANCE 
    1. The ignition must be off when performing a load test on a circuit.
    2. Connect the positive lead of the load test tool to the positive side of the Battery (A). Note:  Refer to the diagram below.
    3. Using an approved back probe tool, connect the negative lead of the load test tool to the Power Control Relay (T760) Control circuit at the one of the component harness connectors (B).
    4. Using an approved back probe tool and a fused jumper wire, connect the Power Control Relay (T760) Control circuit to the negative side of the Battery or a known good ground at the other component harness connector (C and D).
      CAUTION:

      Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the GPEC Diagnostic Adaptor to perform the diagnosis.

      NOTE:

      IMPORTANT - The GPEC Diagnostic Adaptor can add up to 1.5 Ohms of resistance to the circuit.

    5. If it is necessary to probe a terminal at a PCM harness connector, connect the (special tool #10436, Adapter, GPEC Diagnostic) to the appropriate PCM harness connector.
    6. The bulb on the load test tool should be illuminated and bright if there is no resistance in the circuit.
      GC0174954Courtesy of CHRYSLER GROUP, LLC
      NOTE:

      Compare the brightness of the bulb in the load test tool to that of a direct connection to Battery.

      Is the load test bulb illuminated and bright?

      Yes 

      • Go To  9

      No 

      • Repair the Power Control Relay (T760) Control circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  9. CHECK THE POWER CONTROL RELAY FOR PROPER OPERATION 
    1. Reconnect the Power Control Relay C1 harness connector.
    2. Remove the eyelet from the Power Control Relay C2 terminal. Leave the C3 eyelet connected to the Power Control Relay.
      NOTE:

      This eyelet is still connected to Main Cranking Battery. Be careful to insulate and/or isolate the cable so that it cannot make contact with any engine ground.

    3. Connecting a fused jumper between B+ and the (T760) Power Control Relay Control circuit at the PDC C2 harness connector to energize the Power Control Relay.
    4. Measure the voltage at the C2 terminal of the Power Control Relay with the C2 eyelet removed and the C3 eyelet still connected.
      NOTE:

      The Power Control Relay should be open when energized and should not have voltage passing through the relay from the C3 terminal to the C2 terminal.

      Is voltage present at the C2 terminal?

      Yes 

      • Replace the Power Control Relay in accordance with the Service Information.

      No 

      • The Power Control Relay is not stuck closed at this time. This may be an intermittent condition. Try energizing and de-energizing the relay several times while checking voltage across the relay to check for an intermittent stuck condition. If the relay does not intermittently stick closed replace the Power Distribution Center in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
scientia non olet · About LEMON Manuals