Checking Wiring And Sensors

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS CORPORATION

• Ignition off
• Connect the breakout box.

  Check the power supply cable for the transmission input speed sensor between control module terminal #A59 (#A59) and transmission connector terminal #A2. Check for an open-circuit. See OPEN-CIRCUIT, PERMANENT FAULTS . Check for a short-circuit to ground. See SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS . Check for a short-circuit to supply voltage. See SHORT-CIRCUIT TO SUPPLY VOLTAGE. PERMANENT FAULTS .

  Check the signal cable between control module terminal #A41 (#A41) and transmission connector terminal #A1. Check for an open-circuit. See OPEN-CIRCUIT, PERMANENT FAULTS . Check for a short-circuit to ground. See SHORT-CIRCUIT TO GROUND, PERMANENT FAULTS . Check for a short-circuit to supply voltage. See SHORT-CIRCUIT TO SUPPLY VOLTAGE. PERMANENT FAULTS .

  HINT: With the control module connected and the ignition on, the voltage between transmission output speed sensor connector terminals #A1 and #A2 must be approximately 1-3 V below Ubat. 

  Remedy as necessary.

  Other information: 

  • To connect the breakout box, see CONNECTING THE BREAKOUT BOX
  • To disconnect the automatic transmission connectors, see CONNECTORS, TRANSMISSION, DISCONNECTING / CONNECTING
  • To replace the transmission input speed sensor, see INPUT SPEED SENSOR/OUTPUT SPEED SENSOR, REPLACING
  • For information about signals, see SIGNAL DESCRIPTION. TRANSMISSION CONTROL MODULE (TCM) .
  Fig 2: Identifying Transmission Output Speed Sensor Terminals

  Courtesy of VOLVO CARS CORPORATION
  Fig 3: Identifying Ohms Display

  Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  FAULT NOT FOUND:  Troubleshooting has been completed.