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Symptom Chart

WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHART

Condition Possible Sources Action
  • The vehicle security module does not respond to the diagnostic tool
  • Circuit or connection in universal asynchronous receiver transmitter (UART) based protocol (UBP) network
  • Central junction box (CJB) fuse 20 (5A)
  • Battery junction box (BJB) fuse 2 (30A)
  • Circuitry
  • Vehicle security module
  • The driver seat module (DSM) does not respond to the diagnostic tool
  • Circuit or connection in universal asynchronous receiver transmitter (UART) based protocol (UBP) network
  • Central junction box (CJB) fuses:
    • 20 (5A)
    • 1 (30A)
  • Circuitry
  • DSM
  • The restraint control module (RCM) does not respond to the diagnostic tool
  • Circuit or connection in the international standards organization (ISO) 9141 communication network
  • RCM
  • The tire pressure monitoring system module does not respond to the diagnostic tool
  • Circuit or connection in the controller area network (CAN)
  • Tire pressure monitoring system module
  • The anti-lock brake system (ABS) module does not respond to the diagnostic tool
  • Circuit or connection in the controller area network (CAN)
  • ABS Module
  • The parking aid module does not respond to the diagnostic tool
  • Circuit or connection in the international standards organization (ISO) 9141 communication network
  • Parking aid module
  • The powertrain control module (PCM) does not respond to the diagnostic tool
  • Circuit or connection in the controller area network (CAN)
  • PCM
  • The instrument cluster does not respond to the diagnostic tool
  • Circuit or connection in the controller area network (CAN)
  • Instrument cluster
  • No instrument cluster universal asynchronous receiver transmitter (UART) based protocol (UBP) network communication
  • Circuit or connection in the UBP network.
  • Instrument cluster.
  • The electronic automatic temperature control (EATC) module does not respond to the diagnostic tool
  • Circuit or connection in the controller area network (CAN)
  • EATC module
  • No controller area network (CAN) communication
  • Circuit or connection in the CAN
  • CAN-networked modules.
  • No international standards organization (ISO 9141) network communication
  • Circuit or connection in the ISO 9141 communication network
  • ISO 9141 -networked modules
  • No universal asynchronous receiver transmitter (UART) based protocol (UBP) network communication
  • Circuit or connection in the UBP communication network
  • UBP-networked modules
  • No module/network communication - no power to the diagnostic tool
  • Data link connector (DLC)
  • Central junction box (CJB) fuse 24 (15 A)
  • Circuitry
  • Diagnostic tool
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