Suzuki SWIFT RS415 2017, Service Manual

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1A-138 Engine General Information and Diagnosis:
DTC P0533: A/C Refrigerant Pressure Sensor Circuit High
S4RS0A1104076
Wiring Diagram
DTC Detecting Condition and Trouble Area
5 A/C refrigerant pressure sensor signal circuit check
1) Connect connectors to ECM.
2) Turn ON ignition switch, measure voltage between
engine ground and “RED” wire terminal of A/C
refrigerant pressure sensor connector.
Is voltage 4 – 6 V?
Go to Step 7. Go to Step 6.
6 A/C refrigerant pressure sensor signal circuit check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Measure resistance between engine ground and “E23-
55” terminal of ECM connector.
Is resistance infinity?
Go to Step 7. “RED” wire is shorted to
ground circuit.
7 A/C refrigerant pressure sensor check
1) Check A/C refrigerant pressure sensor referring to “A/C
Refrigerant Pressure Sensor and Its Circuit Inspection:
in Section 7B”
Is it in good condition?
Substitute a known-
good ECM and recheck. Faulty A/C refrigerant
pressure sensor.
Step Action Yes No
E23 C37
3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8 3 4
18 19
5 6 7 10 11
17 20
47 46 49 50 51
21 22
52
16 25
9
24
14
29
55 57 54 53
59
60 58
2
26 27 28
15
30
56 48
32 31 34 35 36 37 40 42 39 38
44
45 43 41 33
1 12 13
23
8
4
C37-58
C37-15
C37-30
BLK/ORN
BLK
BLK
1
2
3
GRY/RED GRY/RED
ORN ORN
5V
5V
C37-14
E23-55
E23-54
RED
I4RS0A110047-
1. A/C refrigerant pressure sensor 3. To other sensors
2. To TP sensor and MAP sensor 4. ECM
DTC detecting condition Trouble area
A/C refrigerant pressure sensor signal voltage is higher
than 4.93 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