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+# CANBUS Inputs
+
+The TCM CAN bus inputs used by the NAG 1 electronic control system are: 
+* ABS Wheel Speed Sensors (two-wheel drive uses rear sensors, four-wheel drive 
+uses front and rear sensors) 
+* Engine Coolant Temperature 
+* Engine Static Torque 
+* Driver Input Requested Torque 
+* Pedal Position 
+* Demanded Engine Torque (Electronic Stability Program [ESP]) 
+* Engine RPM 
+* Brake Light Switch 
+* Cruise Control Off Signal 
+* Limp-In Mode Message (from PCM on Grand Cherokee and Sprinter) 
+* Acknowledge Transmission Torque Request 
+* Cluster Ambient Air Temperature 
+* Shift Lever Position (from SLA) 
+* Winter/Standard Switch (Crossfire) 
+* FCM Inputs to TCM 
+* — Axle Ratio 
+* — Transfer Case 
+* — Dynamic Tire Circumference 
+* — Model Year 
+* — Country Code 
+* — Body Style 
+* — Odometer 
+* — Brake Light Switch 
+* — Kickdown Signal 
+* — Ignition Switch Status (Key In, Ignition Off Active, Ignition Run, Ignition 
+* Start Active)
+
+The SLA (Shift Lever Assembly) processes the following information: 
+* Stop lamp speed control signal (service brake) 
+* Shift lever position (internal to module) 
+* Request ID 
+* Brake pedal depressed 
+* Vehicle speed signal from ABS/ESP controller 
+* Ignition switch status 
+* Odometer 
+* VIN message information 
+* Network configuration 
+* Vehicle information 
+The SLA outputs the following signals: 
+* SLA Status 
+* Response ID
+
+The following are the output signals the TCM transmits over the CAN bus. 
+* Current/Actual/Target Gear (TCM to CAB/PCM) 
+* Maximum Engine Torque 
+* Minimum/Maximum Transmission Torque 
+* Requested Engine Torque 
+* Calculated Output Shaft Speed 
+* Allow Transmission Torque Request
+* Torque Converter Status (Open, Closed, Slipping, Open Slipping [5%], Closed 
+Slipping [95%]) 
+* Kickdown 
+* Transmission Overtemp (to PCM) 
+* Transmission in Limp-In Mode (to PCM) 
+* OK to Crank (to PCM) 
+* Garage Shift Torque Demand 
+* Output Shaft Torque (CAB/EPS Option Only) 
+* PRNDL Display Request (to FCM and FCM to Cluster, Sprinter is Shifter to 
+* Cluster) 
+* Transmission Fluid Temperature 
+* PRNDL Status (Signal Not Available) 
+* Freeze Frame DTC 
+* Number of DTCs Stored (Set) 
+* MIL On For This DTC 
+* Freeze Frame Priority (Value 1–15) 
+* MIL Fault Occurred This Trip 
+* Store Freeze Frame Now 
+* Delete Freeze Frame Now
+
+# Fault Results
+
+The TCM continuously checks for electrical problems, mechanical problems and 
+some hydraulic problems. When a problem is sensed, the TCM stores a Diagnostic 
+Trouble Code (DTC). Some of these codes cause the transmission to go into “Limp-In” 
+or “Default” mode. 
+The NAG 1 transmission defaults in the current gear position if a DTC is detected. 
+Then after a key cycle or if the transmission is placed in Park, the transmission goes 
+into Limp-In Mode, which is mechanical second gear. Some DTCs allow the 
+transmission to resume normal operation (recover) if the detected problem goes away. 
+A Permanent Limp-In DTC recovers when the key is cycled; but if the same DTC is 
+detected for three key cycles, the system does not recover and the DTC must be 
+cleared from the TCM with a scan tool.
+
+# Fault Codes
+
+FAULT 
+CODE 
+J2012 
+DTC 
+A580 
+DTC 
+DESCRIPTION OF 
+FAULT 
+LIMP-IN 
+SET 
+MIL 
+LIT 
+TYPE OF 
+FAILURE 
+2 P0753 2100 1–2/4–5 Shift Solenoid Yes (P) Yes C, E, S 
+3 P0758 2102 2–3 Shift Solenoid Yes (P) Yes C, E, S 
+4 P0763 2104 3–4 Shift Solenoid Yes (P) Yes C, E, S 
+5 P0743 2106 TCC Solenoid Circuit Yes (P) Yes C, E, S 
+6 P0748 2107 Modulating Pressure 
+Solenoid Circuit 
+Yes (P) Yes C, E, S 
+7 P0778 2108 Shift Pressure Solenoid 
+Circuit 
+Yes (P) Yes C, E, S 
+10 P0657 2602 Solenoid Supply Voltage Yes (P) Yes C, E, S 
+11 P0642 2603 Sensor Supply Voltage 
+Low 
+Yes (P) Yes C, E, S 
+78 P0643 Sensor Supply Voltage 
+High 
+Yes (P) Yes C, E, S 
+12 P0717 2200 N2 Input Speed Sensor 
+Circuit 
+Yes (T) Yes C, E, S 
+13 P2767 2203 N3 Input Speed Sensor 
+Circuit 
+Yes (T) Yes C, E, S 
+14 P2784 220A Input Sensors Mismatch Yes (T) Yes C, E, S, T 
+15 P1704 220B N2 Sensor Overspeed Yes (N) Yes C, T 
+99 P1705 N3 Sensor Overspeed Yes (N) Yes C, T 
+19 P0563 2601 System Overvoltage Yes (T) Yes C, E 
+20 P0712 2220 Transmission Oil Temp. 
+Sensor Shorted 
+No No C, E, S 
+21 P0562 2600 System Undervoltage Yes (T) Yes C, E 
+22 U140C 2400 CAN Right Rear Wheel 
+Speed Signal Not Valid 
+No No C, E, S 
+23 U140B 2401 CAN Left Rear Wheel 
+Speed Signal Not Valid 
+No No C, E, S 
+24 U140A 2402 CAN Right Front Wheel 
+Speed Signal Not Valid 
+No No C, E, S 
+25 U1409 2403 CAN Left Front Wheel 
+Speed Signal Not Valid 
+No No C, E, S 
+ P0501 Vehicle Speed Sensor 
+Performance/Rationality 
+Yes (T) Yes C, E, S 
+26 U1400 2405 CAN Engine TPS Message 
+Not Valid 
+No No C, E, S 
+27 U1404 2406 CAN Static Engine Torque 
+Message Not Valid 
+No No C, E 
+28 U1401 240A CAN Engine Speed 
+Message Not Valid 
+No No C, E, S 
+29 U1405 2408 CAN Minimum Engine 
+Torque Message Not Valid 
+No No C, E 
+30 U0141 2314 Lost Communication with 
+Central Gateway 
+No No C, E 
+31 U1406 2409 CAN Maximum Engine 
+Torque Message Not Valid 
+No No C, E 
+32 U1407 2407 CAN Engine Torque 
+Demand Message Not 
+Valid 
+No No C, E 
+33 U1408 2404 CAN ABS Brake Light 
+Switch Message Not Valid 
+No No C, E 
+34 U0103 2313 Lost Communication with 
+Electric Gearshift Module 
+Yes (T) Yes C, E 
+35 U0155 2315 Lost Communication with 
+Instrument Panel 
+No No C, E 
+36 U110B 2312 CAN Engine Coolant 
+Message Missing 
+No No C, E 
+37 U0002 2300 Bus-Off CAN Controller 1 Yes (T) Yes C, E 
+38 U0121 2310 ABS CAN Messages 
+Missing 
+Yes (T) Yes C, E 
+39 U0100 2311 Engine CAN Messages 
+Missing 
+No Yes C, E 
+40 U0164 2316 Lost Communication with 
+A/C Control Module 
+No No C, E
+41 U0114 2317 Lost Communication with 
+CAN Transfer Case 
+Yes (T) Yes C, E 
+42 U0404 240C CAN Gearshift Position 
+Message Not Valid 
+Yes (T) Yes C, E 
+43 U1402 240B CAN Engine Coolant 
+Temperature Message Not 
+Valid 
+No No C, E, S 
+44 U0414 240D CAN Transfer Case 
+Message Not Valid 
+Yes (T) Yes C, E 
+48 P0602 2010 Internal Controller 
+Variant Not Coded 
+Yes (P) Yes C 
+49 P0219 2501 Engine Overspeed Yes (N) Yes C, T 
+50 P0730 2500 Improper Gear Ratio Yes (N) Yes C, E, T 
+51 P0731 2502 Transmission Slipping in 
+First Gear 
+Yes (C) Yes C, T 
+100 P0732 Transmission Slipping in 
+Second Gear 
+Yes (C) Yes C, T 
+101 P0733 Transmission Slipping in 
+Third Gear 
+Yes (C) Yes C, T 
+102 P0734 Transmission Slipping in 
+Fourth Gear 
+Yes (C) Yes C, T 
+103 P0735 Transmission Slipping in 
+Fifth Gear 
+Yes (C) Yes C, T 
+52 P0742 2510 TCC Stuck On 
+(Mechanical) 
+No No C, E, S, T 
+53 P2783 2511 TCC Overtemp No No T 
+54 P2638 2520 Torque Reduction 
+Acknowledge Not Correct 
+No No C 
+55 P1731 2503 Incorrect Gear Engaged Yes (T) Yes C, E, S 
+56 P1629* 2013 Solenoid 
+Supply/Watchdog 
+Yes (P) Yes C 
+57 P1631* 2004 Internal Controller Clock 
+Failure 
+Yes (P) Yes C
+58 P1632* 2000 Internal Controller Test 
+Internal Watchdog Failure 
+Yes (P) Yes C 
+59 P1633* 2002 Internal Controller Test 
+External Watchdog 
+Failure 
+Yes (P) Yes C 
+60 P1634* 2001 Internal Controller 
+Internal Watchdog 
+Occurred 
+No Yes C 
+61 P1636* 2003 Internal Controller 
+External Watchdog 
+Occurred 
+No Yes C 
+62 P0604 2005 Internal Controller RAM 
+Failure 
+Yes (P) Yes C 
+63 P0605 2008 Internal Controller ROM 
+Failure 
+Yes (P) Yes C 
+65 P1637 200A Internal Controller 
+EEROM Failure 
+No No C 
+66 P1638* 2006 Internal Controller CAN 1 
+RAM Failure 
+Yes (P) Yes C 
+67 P1639* 2007 Internal Controller CAN 2 
+RAM Failure 
+Yes (P) Yes C 
+ P0613 Internal Controller Failure Yes (P) Yes C 
+71 P0752 2101 1–2/4–5 Solenoid Circuit Yes (P) Yes C, E, S 
+72 P0757 2103 2–3 Solenoid Circuit Yes (P) Yes C, E, S 
+73 P0762 2105 3–4 Solenoid Circuit Yes (P) Yes C, E, S 
+74 P0710 2221 Temperature Sensor P/N 
+Switch Circuit 
+No No C, E, S 
+75 P0714 2222 Temp. Sensor Erratic No No C, E, S 
+80 U1508 2333 Electric Gearshift Module 
+Incorrect Message Length 
+Yes (T) Yes C, E 
+81 U0415 2330 ABS Controller Incorrect 
+Message Length 
+Yes (T) Yes C, E 
+82 U0401 2331 Engine Controller 
+Incorrect Message Length 
+No Yes C, E 
+83 U1507 2335 Engine Coolant 
+Temperature Incorrect 
+Message Length 
+No No C, E 
+84 U0431 2334 Central Gateway Incorrect 
+Message Length 
+No No C, E 
+85 U0423 2332 Instrument Panel 
+Incorrect Message Length 
+No No C, E 
+86 U0424 2336 A/C Controller Incorrect 
+Message Length 
+No No C, E 
+87 U1506 2337 Transfer Case Controller 
+Incorrect Message Length 
+Yes (T) Yes C, E 
+111 U140F CAN Engine Variant 
+Message Not Valid or 
+Missing 
+Yes (P) Yes C, E 
+112 U1410 CAN FCM Variant 
+Message Not Valid or 
+Missing 
+Yes (P) Yes C, E
+
+These faults also set 
+code P0613 
+(P) = Permanent Limp-In 
+(T) = Temporary Limp-In 
+(C) = Controlled Limp-In 
+(N) = Loss of Drive 
+C = Controller 
+E = Electrical 
+S = Sensor/Actuator 
+T = Transmission
+
+#NORMAL TRANSMISSION OPERATION (SHIFT PATTERNS) 
+
+Normal operation of the transmission is when all upshifts and downshifts occur when 
+expected. The shifts should be timely and without harshness. The transmission 
+should be able to attain all forward and reverse gear ranges. The initial engagement 
+of Drive 1st and/or reverse should be prompt, without delay and smooth. There 
+should be no chatter during torque converter clutch operation. 
+The following charts provide illustration in graph form of approximately when 
+transmission automatic shifting should occur based on % accelerator pedal position 
+and transmission calculated output shaft speed (rpm). 
+The charts include: 
+* 1–2, 2–3, 3–4, 4–5 upshift patterns 
+* 5–4, 4–3, 3–2, 2–1 downshift patterns 
+* Steady state gear ranges with Open-to-Slipping (O-S) and Slipping-to-Open 
+(S-O) torque converter clutch operation patterns 
+* Fuel economy patterns 
+* Manual gear upshift patterns using Autostick