Engine General Information and Diagnosis: 1A-18
Terminal Arrangement of ECM Coupler (Viewed from Harness Side)
Connector: C37
1. Accelerator pedal position (APP) sensor
assembly
22. Stop lamp switch
44. Radiator cooling fan motor No.1
2. Shield wire
23. Stop lamp
45. Radiator cooling fan motor No.2
3. CMP sensor
24. DLC
46. A/C compressor relay (if equipped with A/C)
4. CKP sensor
25. To BCM and ABS hydraulic unit / control
module assembly
47. A/C compressor (if equipped with A/C)
5. MAF and IAT sensor
26. Barometric pressure sensor
48. “CPRSR” fuse
6. CO adjust resistor (if equipped)
27. Throttle actuator control relay
49. Ignition coil assembly (for No.1 and No.4
spark plugs)
7. MAP sensor
28. “THR MOT” fuse
50. Ignition coil assembly (for No.2 and No.3
spark plugs)
8. ECT sensor
29. Electric throttle body assembly
51. “IG COIL” fuse
9. A/C refrigerant pressure sensor (if equipped
with A/C)
30. Throttle actuator
52. Main relay
10. Generator
31. Throttle position sensor
53. “IG2 SIG” fuse
11. “O2 HTR” fuse
32. Fuel injector No.1
54. “DOME” fuse
12. HO2S heater relay
33. Fuel injector No.2
55. “FI” fuse
13. HO2S-2
34. Fuel injector No.3
56. Ignition switch
14. A/F sensor
35. Fuel injector No.4
57. “IGN” fuse
15. Knock sensor
36. EVAP canister purge valve
58. “STR MOT” fuse
16. Power steering pump pressure switch
37. EGR valve
59. “ST SIG” fuse
17. Immobilizer coil antenna (if equipped)
38. Oil control valve (Camshaft position control)
60. Starting motor control relay
18. ABS hydraulic unit / control module assembly
39. Fuel pump relay
61. Starting motor
19. BCM
40. Fuel pump
62. Diagnosis connector (if equipped)
20. Combination meter
41. Radiator cooling fan relay No.1
63. Battery
21. Main fuel level sensor
42. Radiator cooling fan relay No.2
64. Engine ground
21-1. Sub fuel level sensor
43. Radiator cooling fan relay No.3
65. Body ground
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
I4RS0A110008-01
Terminal
Wire color
Circuit
Terminal
Wire color
Circuit
1
PNK
Fuel injector No.1
31
BLK/YEL
Ground for A/F sensor heater
2
PNK/BLK
Fuel injector No.2
32
PNK/BLU
Heater output of A/F sensor
3
YEL/GRN
EGR valve (stepper motor coil
3)
33
GRY/RED
Intake manifold tuning vacuum
solenoid valve output
(for J20 engine)
4
YEL
EGR valve (stepper motor coil
4)
34
RED/BLU
Ground for A/F sensor
adjusting resistor
5
YEL/BLK
EGR valve (stepper motor coil
1)
35
RED/YEL
A/F sensor adjusting resistor
signal
6
YEL/RED
EGR valve (stepper motor coil
2)
36
PNK
Crankshaft position (CKP)
sensor (–)
(for J20 engine)
7
BLU/ORN
Power steering pump pressure
switch signal
37
BLK
A/F sensor signal (–)
8
BRN/RED
(for M16
engine)
Generator field coil monitor
signal
38
WHT
A/F sensor signal (+)
BRN/BLK
(for J20
engine)
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