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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1427 (Four-Wheel Drive (4WD) Systems) >> Diagnosis And Testing >> Four Wheel Drive (4WD) Systems >> Pinpoint Tests >> Pinpoint Test D: DTCs P1824/P1825 - 4-Wheel Drive Clutch Relay Circuit Failure/4-Wheel Drive Clutch Relay Open Circuit >> PINPOINT TEST D: DTCs P1824/P1825 - 4-WHEEL DRIVE CLUTCH RELAY CIRCUIT FAILURE/4-WHEEL DRIVE CLUTCH RELAY OPEN CIRCUIT

PINPOINT TEST D: DTCs P1824/P1825 - 4-WHEEL DRIVE CLUTCH RELAY CIRCUIT FAILURE/4-WHEEL DRIVE CLUTCH RELAY OPEN CIRCUIT

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Carry out a thorough inspection and verification as outlined before carrying out this pinpoint test. Refer to INSPECTION AND VERIFICATION .
  1. D1 CHECK FOR 4X4 CONTROL MODULE DTCs 
    • Ignition ON.
    • Carry out the 4X4 control module self-test.
    • Are any DTCs received? 
  2. D2 CHECK CIRCUITS CCF21 (VT/WH) AND RCF21 (WH/VT) FOR A SHORT TO GROUND WITH ATC SOLENOID (PART OF REAR AXLE) CONNECTED 
    • Ignition OFF.
    • Disconnect: 4X4 Control Module C3184.
    • Measure the resistance between 4X4 control module C3184-8, circuit CCF21 (VT/WH), harness side and ground; and between 4X4 control module C3184-16, circuit RCF21 (WH/RD), harness side and ground.
      Fig 1: Checking Circuit(s) In Question
      G06064360Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to  D5.
    • No:  GO to D3  .
  3. D3 CHECK CIRCUITS CCF21 (VT/WH) AND RCF21 (WH/VT) FOR A SHORT TO GROUND WITH C4347 DISCONNECTED 
    • Disconnect: ATC  Solenoid Jumper Harness C4347.
    • Measure the resistance between 4X4 control module C3184-8, circuit CCF21 (VT/WH), harness side and ground; and between 4X4 control module C3184-16, circuit RCF21 (WH/RD), harness side and ground.
      Fig 2: Checking Circuit(s) In Question
      G06064360Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10,000 ohms? 
    • Yes:  GO to D4  .
    • No:  REPAIR the circuit(s) in question. CLEAR the DTCs. REPEAT the self-test.
  4. D4 CHECK CIRCUITS CCF21 (VT/WH) AND RCF21 (WH/VT) FOR AN OPEN WITH ATC SOLENOID CONNECTED 
    • Connect: ATC  Solenoid C4347.
    • Measure the resistance between 4X4 control module C3184-8, circuit CCF21 (VT/WH), harness side and 4X4 control module C3184-16, circuit RCF21 (WH/RD), harness side.
      Fig 3: Checking Circuits CCF21 (VT/WH) And RCF21 (WH/VT) For An Open With ATC Solenoid Connected
      G06064362Courtesy of FORD MOTOR CO.
    • Is the resistance less than 10 ohms? 
    • Yes:  GO to  D7.
    • No:  GO to D5  .
  5. D5 CHECK CIRCUITS CCF21 (VT/WH) AND RCF21 (WH/VT) FOR AN OPEN AT C4347 
    • Disconnect: ATC  Solenoid C4347.
    • Measure the resistance between 4X4 control module C3184-8, circuit CCF21 (VT/WH), harness side and ATC  solenoid jumper harness C4347-1, circuit CCF21 (VT/WH).
      Fig 4: Measuring Resistance Between 4X4 Control Module C460-8, Circuit CCF21 (VT/WH) And ATC Solenoid Jumper Harness C460-1, Circuit CCF21 (VT/WH)
      G06064363Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Measure the resistance between 4X4 control module C3184-16, circuit RCF21 (WH/RD), harness side and ATC  solenoid jumper harness C4347-2, circuit RCF21 (WH/RD), harness side.
      Fig 5: Checking Circuits CCF21 (VT/WH) And RCF21 (WH/VT) For An Open C4347
      G06098367Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Are the resistances less than 5 ohms? 
    • Yes:  GO to D6  .
    • No:  REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  6. D6 CHECK THE ATC SOLENOID CIRCUIT FOR AN INTERNAL OPEN 
    • Disconnect: ATC  Solenoid C4347.
    • Measure the resistance between ATC  solenoid C4347-1, circuit CCF21 (VT/WH), component side, and ATC  solenoid C4347-2, circuit RCF21 (WH/RD), component side.
      Fig 6: Checking Or Installing ATC Solenoid Jumper Harness
      G06064365Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Is the resistance less than 10 ohms? 
    • Yes:  REPAIR or INSTALL a new ATC solenoid jumper harness. CLEAR the DTCs. REPEAT the self-test.
    • No:  INSTALL a new rear axle assembly. REFER to REMOVAL AND INSTALLATION . CLEAR the DTCs. REPEAT the self-test.
  7. D7 CHECK CIRCUIT GD148 (BK/YE) FOR AN OPEN 
    • Measure the resistance between 4X4 control module C3184-15, circuit GD182 (BK/GY), harness side and ground.
      Fig 7: Checking Circuit
      G06064366Courtesy of FORD MOTOR CO.
    • Repeat this measurement while wiggling the harness.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to D8  .
    • No:  REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  8. D8 CHECK THE 4X4 CONTROL MODULE POWER CIRCUITS 
    • Ignition ON.
    • Measure the voltage between 4X4 control module C3184-5, circuit SBP11 (BU/RD), harness side and ground; and between 4X4 control module C3184-4, circuit CBP35 (YE/GY), harness side and ground.
      Fig 8: Checking Circuit In Question
      G06075019Courtesy of FORD MOTOR CO.
    • Are the voltages greater than 10 volts? 
    • Yes:  GO to D9  .
    • No:  CHECK Smart Junction Box (SJB) fuses 11 (10A) and 35 (10A). REPAIR the circuit in question for open or short to ground. CLEAR the DTCs. REPEAT the self-test.
  9. D9 CHECK FOR CORRECT 4X4 CONTROL MODULE OPERATION 
    • Disconnect: 4X4 Control Module C3184.
    • Check the harness and component side connectors for:
      • corrosion.
      • pushed-out/bent pins.
    • Check the ATC  solenoid jumper harness between the 4X4 control module and the ATC  solenoid, located on the rear subframe.
    • Connect the 4X4 control module and make sure it seats correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
    • Yes:  INSTALL a new 4X4 control module. REFER to 4X4 CONTROL MODULE . CLEAR the DTCs. REPEAT the self-test.
    • No:  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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