Intermittent Fault

Check the communication cable between gear selector control module terminal #2 and transmission control module (TCM) terminal #B31 (#B21). Check for an intermittent short-circuit to ground. See SHORT-CIRCUIT TO GROUND, INTERMITTENT FAULTS . Check for contact resistance and oxidation. See CONTACT RESISTANCE AND OXIDATION .

Remedy as necessary.

Other information: 

• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• For other values, see SIGNAL DESCRIPTION. TRANSMISSION CONTROL MODULE (TCM) .

Fig 1: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

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