On-board Diagnostic System: Function
WARNING: This page is about a different variant/trim than selected.
- The on-board diagnostic system detects malfunction and generates and displays the codes corresponding to the location of each malfunction. The malfunction indicator light (AT OIL TEMP light) on the combination meter blinks to indicate occurrence of a failure or error.
- If the malfunction indicator light lights up as a result of TCM detecting a malfunction, the diagnostic trouble code (DTC) corresponding to the malfunction is stored in TCM.
- When checking DTC on the models supporting OBD-II, it is required to connect Subaru Select Monitor (SSM) to data link connector.
- To facilitate each function and failure diagnosis, a diagnostic system that supports SSM is used.
- The on-board diagnostic system detects electrical failures or system errors as shown below.
| Front brake oil pressure switch | Front and rear wheel speed sensor |
| Input clutch oil pressure switch | Turbine speed sensor 1 and 2 |
| Forward brake oil pressure switch | Brake signal |
| Direct clutch oil pressure switch | ATF temperature sensor |
| High&low reverse clutch oil pressure switch | Lateral G sensor |
| Line pressure solenoid (circuit) | CAN communication system |
| Transfer solenoid (circuit) | SPORT shift mode switch |
| Lock-up solenoid (circuit, function) | Range switch system |
| Front brake solenoid (circuit, function) | Back lamp relay output circuit |
| Input clutch solenoid (circuit, function) | PN signal output circuit |
| Forward brake solenoid (circuit, function) | Reverse inhibitor circuit |
| Direct clutch solenoid (circuit, function) | 1, 2, 3, 4, 5, R gear ratio |
| High&low reverse clutch solenoid (circuit, function) |
If a malfunction is detected, the system notifies the malfunction by blinking the AT OIL TEMP light.