Automatic gearbox - Jatco (Diagnostics): Description and operation
- Make
- Land Rover
- Model
- Freelander System Description and Operation (UK)
- Section
- Description and operation › Diagnostics
Diagnostics
A diagnostic socket allows the exchange of information between the EAT ECU and TestBook/T4. The diagnostic socket is located behind the centre console, in the passenger footwell.
1 Diagnostic socket
The diagnostic socket is connected to the EAT ECU on an ISO 9141 K Line. The system uses a 'P' code diagnostic strategy and can record faults relating to gearbox operation. The codes can be retrieved using TestBook/T4 or any diagnostic tool using Keyword 2000 protocol.
Diagnostic Trouble Codes (DTC)
The following table lists P codes, affected components and fault description.
The diagnostics related to diagnostic trouble codes introduced by ECD3 are disabled on vehicles built prior to the ECD3 compliance date.
| P Code | Component | Description |
|---|---|---|
| P0702 | GND return (sensor earth) | Short circuit to battery |
| P0705 | Selector and inhibitor switch input | Multiple signal or No signal |
| P0710 | ATF temperature sensor | Signal out of range |
| P0715 | Turbine speed sensor | No signal |
| P0720 | Vehicle speed sensor | No signal |
| P0732 | 1st gear ratio | Out of range |
| P0732 | 2nd gear ratio | Out of range |
| P0733 | 3rd gear ratio | Out of range |
| P0734 | 4th gear ratio | Out of range |
| P0735 | 5th gear ratio | Out of range |
| P0736 | Reverse gear ratio | Out of range |
| P0740 | Lock-up clutch solenoid | Out of range |
| P0743 | Lock-up duty solenoid | Short circuit to earth or battery |
| P0748 | Line pressure duty solenoid | Short circuit to earth or battery |
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