Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR TRANSMISSION CONTROL MODULE (TCM) CONTROLLER AREA NETWORK (CAN) BUS DIAGNOSTIC TROUBLE CODES (DTCS)
1. With the scan tool, read TCM DTCs and record on the repair order.
  Are any TCM CAN Bus DTCs set?
  
  Yes
  - Repair TCM CAN bus DTCs. If DTC U0001-00-CAN C BUS is set, perform that diagnostic first. Refer to DTC INDEX (1 OF 2) and/or DTC INDEX (2 OF 2) .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 8HP50/850RE TRANSMISSION VERIFICATION TEST .
  No
  - Go To 2
CHECK IF ELECTRONIC SHIFT MODULE (ESM) DTCS ARE PRESENT
1. With the scan tool, read ESM DTCs and record on the repair order.
  Are any ESM DTCs set?
  
  Yes
  - Repair ESM DTC(s). Refer to DTC INDEX (1 OF 2) and/or DTC INDEX (2 OF 2) .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 8HP50/850RE TRANSMISSION VERIFICATION TEST .
  No
  - Using the schematics as a guide, check the TCM connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL (TCM), REMOVAL AND INSTALLATION .
  - Perform the TRANSMISSION VERIFICATION TEST. Refer to 8HP50/850RE TRANSMISSION VERIFICATION TEST .