Engine General Information and Diagnosis: 1A-137
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Check DTC and pending DTC.
Troubleshooting
NOTE:
• Before performed trouble shooting, be sure to read the “Precautions of ECM Circuit Inspection: ”.
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to “Inspection of ECM and Its Circuits: ”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and
confirm that the trouble has been corrected.
DTC detecting condition
Trouble area
A/C refrigerant pressure sensor signal voltage is less than
0.15 V for 0.5 sec. continuously.
(1 driving detection logic but MIL does not light up)
• A/C refrigerant pressure sensor circuit
• A/C refrigerant pressure sensor
• TP sensor
• MAP sensor
• ECM
Step
Action
Yes
No
1
Was “Engine and Emission Control System Check”
performed?
Go to Step 2.
Go to “Engine and
Emission Control
System Check: ”.
2
A/C refrigerant pressure sensor power supply circuit
check
1) Disconnect connector from A/C refrigerant pressure
sensor with ignition switch turned OFF.
2) Check for proper connection of A/C refrigerant pressure
sensor at “GRY/RED”, “RED” and “ORN” wire terminals.
3) Turn ON ignition switch, measure voltage between
engine ground and “GRY/RED” wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
Go to Step 5.
Go to Step 3.
3
A/C refrigerant pressure sensor power supply circuit
check
1) Disconnect connectors from TP sensor and MAP sensor
with ignition switch turned OFF.
2) Turn ON ignition switch, measure voltage between
engine ground and “GRY/RED” wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
Faulty TP sensor and/or
MAP sensor.
Go to Step 4.
4
A/C refrigerant pressure sensor power supply circuit
check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between engine ground and “C37-
14” terminal of ECM connector.
Is resistance infinity?
Go to Step 6.
“GRY/RED” wire is
shorted to ground
circuit.
Содержание SWIFT RS415 2017
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