Diagnostic programs
The following programs are accessible during diagnosis
- Reading and erasing diagnostic trouble codes (DTCs)
- Activating components and functions
- Reading off input and output signals
- Reading module identification
Diagnostic trouble codes (DTCs) and fault messages
An unlimited number of diagnostic trouble codes (DTCs) can be stored in the Transmission Control Module (TCM) which is different to previously. All diagnostic trouble codes (DTC) stored appear on the VIDA screen when it is connected to the car.
There are 13 standard symptoms in the 4T65EV / EV-GT to select between. There are step-by-step service instructions for each standard symptom.
Self-diagnosis can Identify 44 different faults, most of which are of an electrical nature. 41 of the diagnostic trouble codes (DTCs) are common to the AW 42 and the 4T65EV / EV-GT.
Of the 44 diagnostic trouble codes (DTCs) there are 5 which affect the gear selector module (more than the AW 42).
| TCM 15 | Lock-up solenoid SL | Hydraulic fault |
|---|---|---|
| TCM 008D | Lock-up pressure switch | Faulty signal |
| TCM 96 | Park / neutral position shift lock solenoid | Faulty signal |
Specific diagnostic trouble codes (DTCs) for the 4T65EV / EV-GT
| Replace transmission oil | Fix next service |
|---|---|
| Internal transmission fault | Service urgent |
| Internal transmission fault | Fix next service |
| Internal transmission fault | Service necessary |
| Transmission temperature | High |
The following fault messages can be displayed in the display
On Board Diagnostics II (OBD II)
Only USA/CDN
TCM diagnostic functions
See TCM DIAGNOSTIC FUNCTIONS
See DESIGN
See TCM DIAGNOSTIC FUNCTIONS
See DESIGN
Transmission control module (TCM) diagnostic functions
See TRANSMISSION CONTROL MODULE (TCM) DIAGNOSTIC FUNCTIONS