T-Map Sensor Circuit Malfunction; T-Map Inspection - TGB BLADE 600 Service Manual

TMAP SENSOR CIRCUIT MALFUNCTION
DETECTED CONDITION
T-MAP sensor voltage low or high
(0.1 V Sensor voltage < 4.8 V)
NOTE:
Note that atmospheric pressure varies
depending on weather conditions as well as
altitude.
Take that into consideration when inspecting
voltage.
INSPECTION
Step 1
1) Loosen and lift up the fuel tank.
2) Turn the ignition switch OFF.
3) Check the T-MAP sensor couple for loose or
poor contacts.
If OK, then measure the T-MAP sensor input
voltage.
4) Disconnect the T-MAP sensor coupler.
5) Turn the ignition switch ON.
6) Measure the voltage at the Yellow/Black wire
and ground.
7) Also, measure the voltage at the
Yellow/Black wire and Gray/Red wire.
T-MAP sensor input voltage: 4.5 – 5.5 V
(+Yellow/Black – - Ground)
(+Yellow/Black – - Gray/Red)
4-1. FUEL INJECTION SYSTEM
POSSIBLE CAUSE
• Clogged vacuum passage between throttle
body and T-MAP sensor
• Air being drawn from vacuum passage
between throttle body and T-MAP sensor
• T-MAP sensor circuit open or shorted to
ground
• T-MAP sensor malfunction
• ECM malfunction
4-1-33