For 1990-2009 cars

Table 1: | ECM
Table 2: | IPC

#### ECM

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Engine Output Controls | GEN L-Terminal | The engine control module (ECM) commands the generator OFF by removing the 5-volt reference signal from the L terminal of the voltage regulator when you select OFF. The generator will then stop generating an output voltage.

#### IPC

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Lamp and Gage Check | -- | The IPC illuminates the following indicators when you select ON:

• | ABS

• | Air Bag

• | BRAKE

• | Charge

• | Fasten Safety Belt

• | High Beam

• | Low Oil Pressure

• | LOW TRAC

• | Upshift Indicator

The IPC drives the following gages to maximum position when you select On:

• | Engine Coolant Temperature Gage

• | Fuel Gage

• | Speedometer

• | Tachometer

The indicators should stay illuminated and all gages remain at maximum until commanded OFF. When commanded off, the indicators should turn off and all gages should remain at the minimum position until the test is exited or commanded ON.