2008 Jeep Commander Base, 4.7 N, RWDFACTORY OEM SERVICE PROCEDURE

Transmission Control Module (NAG1) Connector End View (C2)

MODULE-TRANSMISSION CONTROL C2 - BLACK 12-WAY(NAG1)

GXK780271Courtesy of CHRYSLER CORP.
CAV  CIRCUIT  FUNCTION 
12 T70 20YL INPUT SPEED SENSOR 1 (N2) SIGNAL
13 T72 20YL/DB SENSOR SUPPLY VOLTAGE
14 T60 18DG/BK 1-2/4-5 SOLENOID CONTROL
15 T73 18YL/GY 3-4 SOLENOID CONTROL
16 T74 18YL/LG 2-3 SOLENOID CONTROL
17 T75 18YL/LB TCC SOLENOID CONTROL
33 T13 20DG/VT SENSOR GROUND
34 T54 20DG/OR TRANSMISSION TEMPERATURE SENSOR-P/N SWITCH SIGNAL
35 T71 20YL/OR INPUT SPEED SENSOR 2 (N3) SIGNAL
36 T76 20YL/TN MODULATION PRESSURE SOLENOID CONTROL
37 T77 20YL/BR SHIFT PRESSURE SOLENOID CONTROL
38 T78 18YL SOLENOID SUPPLY VOLTAGE
H1 D65 20WT/LG CAN C BUS (+)
L1 D64 20WT/LB CAN C BUS (-)
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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