Manifold Absolute Pressure (Map) Sensor
- MAP sensor is located on firewall. With ignition on, check supply voltage from ECM to MAP sensor on designated wire terminal. See MAP SENSOR WIRE TERMINAL IDENTIFICATION . Reading should be about 5 volts.
- Disconnect vacuum hose at MAP sensor. Install hand-held vacuum pump. Turn ignition on. Check signal voltage at designated wire terminal of MAP sensor. See MAP SENSOR WIRE TERMINAL IDENTIFICATION .
- Apply vacuum, and note change in signal voltage. As vacuum reading changes, signal voltage should change. Reading should be about 1-1 1/2 volts at high vacuum (idle position) to 4-4 1/2 volts at low vacuum (full throttle position).
MAP SENSOR WIRE TERMINAL IDENTIFICATION
| Application | Supply Voltage Wire Color | Signal Voltage Wire Color |
|---|---|---|
| Tracker | Gray/Red | Gray/Green |
PARK/NEUTRAL POSITION SWITCH CONTINUITY
| Gear Position | Wire Colors |
|---|---|
| Park Or Neutral | Black/Yellow & Black/Red |