Manifold Absolute Pressure MAP/BARO
2-29
Location
The sensor is mounted either on the bulkhead, air
cleaner, throttle body or elsewhere in the engine
compartment. A vacuum hose connects the sensor
to a strong source of manifold vacuum. (Some new
MAP sensor types may be directly mounted to the
manifold, eliminating the vacuum hose connection.)
The BARO sensors are vented to the atmosphere -
there is no vacuum hose attached.
Some Honda engines locate the MAP sensor inside
a control box containing several vacuum hoses and
solenoids.
When to Test
• Related trouble codes sent by computer.
• No start, hard starting, stalling, rough idle,
hesitation, stumble, surging, poor fuel economy,
black exhaust smoke, knocking, backfiring,
catalytic converter overheating or no torque
converter lock-up.
Signal
Power
Signal
Ground
Power
Signal
Ground
Power
Ground
TOYOTA
HONDA
GM/CHRYSLER
MAP Signal
Power
Ground
MAP Signal
Ground
Power
FORD
Vehicle
Harness
Connectors
for MAP
Sensor
(Mating side of
connector shown.)
Refer to vehicle service manual for connectors not shown.
Summary of Contents for CP9087
Page 82: ...3 22 Notes...
