AUTOMATIC TRANSMISSION SYSTEM > DIAGNOSIS SYSTEM |
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DESCRIPTION |
The Malfunction Indicator Lamp (MIL) illuminates when the vehicle's on-board computer detects a malfunction in the computer itself or in drive system components. In addition, the applicable Diagnostic Trouble Codes (DTCs) are recorded in the ECM memory (Click here).
If the malfunction does not reoccur, the MIL stays illuminated until the ignition switch is turned off, and the MIL turns off when the ignition switch is turned on. However, the DTCs remain recorded in the ECM memory.
To check DTCs, connect the tester to the Data Link Connector 3 (DLC3) on the vehicle or connect terminals TC and CG on the DLC3 (DTCs will be displayed on the combination meter).
NORMAL MODE AND CHECK MODE |
2 TRIP DETECTION LOGIC |
FREEZE FRAME DATA |
CHECK MIL |
The MIL illuminates when the ignition switch is turned on and the engine is not running.
- HINT:
- If the MIL does not illuminate, check the MIL circuit (Click here).
When the engine is started, check that the MIL turns off.
If the lamp remains illuminated, the diagnosis system has detected a malfunction or abnormality in the system.