DAELIM VJF125 Service Manual page 72

Check the MAPAT Circuit(Intake Pressure Sensor (IMP)+Intake Temperature Sensor(TBA))'s circuit
Fault code number is displayed by MIL
The Fault code of intake pressure sensor
Checking circuit
CHECKING PROCEDURE
1) Turn off the ignition key .
2) Check to see if the MAPAT coupler has come loose or the wire is peeling off.
If there is normal, measured the input 5 voltage of MAPAT's coupler.
3) Disassemble the coupler of MAPAT and turn on the ignition key
4) Measure the input voltage of MAPAT (intake pressure sensor + intake temperature sensor)'s coupler.
Input voltage : 4.5 ~ 5.5[V]
Measuring terminal :
Remarks : Measuring unit of voltage : voltage [V]
5) If voltage value is not normal,
Check to see if the ECU coupler is loose or if there is a bad contact.
Check the 'P' electric wire, 'P/G' electric wire, 'P/L' to see if they have been broken short-circuited
Remark : refer to (5-16) if the intake pressure sensor is broken
refer to (5-16) if the intake temperature sensor is broken
After fault repaired, To erase the memorized fault code in the ECU is refer to how to remove the fault code(5-11).
MAPAT
ECU
Coupler terminal is based on the side of wire-harness
MAPAT 3 terminal ~ MAPAT 1 terminal
EMS(Engine Management System)
The Fault code of intake temperature sensor
3 : Intake pressure sensor ground
3 : Inhalation pressure
26 : 5V voltage
sensor GROUND
27 : IMP
26 : 5V voltage
28 : TBA
27 : IMP 28 : TBA
5-21