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Home >> Ford >> 2004 >> Mustang Mach 1, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System - Pats >> Diagnosis And Testing >> Passive Anti-Theft System (PATS) - Pinpoint Tests >> Pinpoint Test A: No Communication With The Instrument Cluster

Pinpoint Test A: No Communication With The Instrument Cluster

  1. A1 CHECK THE BATTERY POWER SUPPLY TO THE INSTRUMENT CLUSTER 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220b.
    • Measure voltage between instrument cluster C220b Pin 10, Circuit 729 (RD/WH), harness side and ground.
      Fig 1: Checking Battery Power Supply To Instrument Cluster
      G03242797Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes:  GO to A2.
    2. No:  REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
  2. A2 CHECK THE RUN POWER SUPPLY TO THE INSTRUMENT CLUSTER 
    • Key in ON position.
    • Measure the voltage between instrument cluster C220b Pin 11, Circuit 489 (PK/BK), harness side and ground.
      Fig 2: Checking Run Power Supply To Instrument Cluster
      G03242798Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes:  GO to A3.
    2. No:  REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
  3. A3 CHECK RUN/START POWER SUPPLY TO THE INSTRUMENT CLUSTER 
    • Measure the voltage between the instrument cluster C220b Pin 12, Circuit 20 (WH/LB), harness side and ground.
      Fig 3: Checking Run/Start Power Supply To Instrument Cluster
      G03242799Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes:  GO to A4.
    2. No:  REPAIR Circuit 20 (WH/LB). REPEAT the selftest. CLEAR the DTCs.
  4. A4 CHECK GROUND CIRCUIT 397 (BK/WH) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between instrument cluster C220b Pin 20, Circuit 397 (BK/WH), harness side and ground.
      Fig 4: Checking Ground Circuit 397 (BK/WH) For Open
      G03242800Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to A5.
    2. No:  REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
  5. A5 CHECK GROUND CIRCUIT 1205 (BK) FOR OPEN 
    • Measure the resistance between instrument cluster C220b Pin 1, Circuit 1205 (BK), harness side and ground.
      Fig 5: Checking Ground Circuit 1205 (BK) For Open
      G03242801Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  REFER to MODULE COMMUNICATIONS NETWORK .
    2. No:  REPAIR the circuit. REPEAT the self-test. CLEAR the DTCs.
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