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45RFE/545RFE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE For a complete wiring diagram Refer to Section 8W. 1. Perform the following before attempting any diagnostic procedures: • Check the transmission fluid level. If the fluid level is low, locate and repair any leaks and fill the transmission • Check the battery. To avoid false diagnosis, testing should only be performed with the battery fully charged. • With the scan tool, read Engine (PCM) DTCs. If DTCs are present, refer to the Driveability Category and per- • With the scan tool, read Transmission (TCM) DTCs. Record all Stored, Active, and Pending DTC information. • With the scan tool, read DTC EVENT DATA. Use this data to identify the conditions in which the DTC was set. • Performing a Battery Disconnect will clear all DTC EVENT DATA and reset all learned Transmission values to • With the scan tool, perform the Shift Lever Position Test. If the test does not pass, refer to the diagnostic • For Gear Ratio Error DTCs, use the scan tool to view CVI Monitor data. Read and record the Clutch Volume • Use the wiring diagram as a guide. Inspect the wiring and connectors related to this circuit. Repair as neces- • Refer to the When Monitored and Set Conditions for this DTC. DTCs can set at ignition on, at start up, after • Refer to applicable Technical Service Bulletins (TSBs) for controller software update information. Some condi- • Refer to any Service Information Tune Ups or Technical Service Bulletins that apply. Were there any repairs made that fixed the vehicle? Yes >> Testing complete. Perform 45RFE/545RFE TRANSMISSION VERIFICATION TEST - VER 1. (Refer to 21 - TRANSMIS- No >> Refer to the Transmission category and perform the appropriate diagnostic procedure(s). 21 - 676 AUTOMATIC TRANSMISSION 545RFE - ELECTRICAL DIAGNOSTICS - (DIESEL) KJ |