Diagnostic Test
WARNING: This page is about a different car, the 2014 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR TCM CAN BUS DTCS
- With the scan tool, read TCM DTCs.
Are any TCM CAN BUS DTCs present?
Yes
- Refer to DIAGNOSTIC CODE INDEX - 8HP45 AUTOMATIC TRANSMISSION - 1500 article and perform the appropriate diagnostic procedure.
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Go To 2
- With the scan tool, read TCM DTCs.
- CHECK IF ESM DTCS ARE PRESENT
- With the scan tool, read ESM DTCs.
Are any ESM DTCs present?
Yes
- Refer to ELECTRONIC SHIFT MODULE (ESM) - ELECTRICAL DIAGNOSTICS - 8HP45 AUTOMATIC TRANSMISSION - 1500 article and perform the appropriate diagnostic procedure.
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Using the schematics as a guide, check the Transmission Control Module Assembly (TCMA) terminals for corrosion, damage or terminal push out. If no problems are found, replace and program the TCMA in accordance with the Service Information. Refer to VALVE BODY, REMOVAL .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
- With the scan tool, read ESM DTCs.