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No Testing is complete. NAG1 PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article. Perform the following pre-diagnostic troubleshooting procedures prior to performing any diagnostic test. Always perform diagnostics with a fully charged battery to avoid false symptoms. 1. With the scan tool, read the engine DTCs. Check and repair all engine DTCs prior to performing transmission symptom diagnostic procedures. 2. With the scan tool, read and record all Transmission DTCs. Record the controller software version and variant ID (configuration or level). 3. Verify the current software level of transmission controller. Various problems are corrected by software upgrades (flash) to the transmission controller. 4. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors to all components related to the transmission and shift lever assembly. Clean and repair as necessary. 5. Most DTCs set on start up but some may only set by driving the vehicle. Note the when monitored and set conditions of the reported DTC. If variant DTCs are present, perform their respective test first. NOTE: Due to different power control configurations, the Transmission Control Relay NOTE: Incorrect fluid level, and/or poor fluid condition can be the cause of many NOTE: Check for any Service Information Tune-ups or Technical Service Bulletins NOTE: If the TCM detects and stores a DTC, the TCM also stores the vehicles NOTE: If a TCM software update is performed, all DTC information (Environmental
2007 Dodge Nitro R/T 2007 AUTOMATIC TRANSMISSION NAG1 - Shifter Diagnostics - Nitro
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