2015 Kia Forte LX, Standard TransFACTORY OEM SERVICE PROCEDURE

ECM Terminal Input/Output Signal (A/T)

CONNECTOR PIN REFERENCE [CNG-AA]

Pin No. Description Condition Type Level
1 Ignition Coil (Cylinder #2) control output Idle Pulse Turn on: Max. 1.6V
Turn off: Battery voltage
Ignition Coil (Cylinder #3) control output
2 -      
3 -      
4 -      
5 -      
6 -      
7 -      
8 -      
9 -      
10 -      
11 Camshaft Position Sensor (CMPS) [Bank 1/Intake] signal input Idle Pulse Around 7Hz at 850rpm
Around 25Hz at 3000rpm
12 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
13 -      
14 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] signal input Idle Analog DC Min. 0.6V ~ Max. 1.0V
15 -      
16 Sensor feedback signal input Idle Analog Min. 0.1V ~ Max. 4.6V
17 -      
18 -      
19 -      
20 Sensor ground Idle DC Max. 50mV
21 Motor [-] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: max 0.1V
Frewheeling: max 0.1V
Reverse direction
Turn on: Battery voltage
Frewheeling: max 0.1V
22 Ignition Coil (Cylinder #4) control output Idle Pulse Turn on: Max. 1.6V
Turn off: Battery voltage
Ignition Coil (Cylinder #1) control output
23 -      
24 -      
25 -      
26 -      
27 -      
28 -      
29 -      
30 Sensor ground Idle DC Max. 50mV
31 Camshaft Position Sensor (CMPS) [Bank 1/Exhaust] signal input Idle Pulse Around 7Hz at 850rpm
Around 25Hz at 3000rpm
32 Sensor ground Idle DC Max. 50mV
33 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
34 -      
35 Sensor ground Idle DC Max. 50mV
36 -      
37 Sensor ground Idle DC Max. 50mV
38 -      
39 -      
40 -      
41 Crankshaft Position Sensor (+) signal input Idle Frequency Vpp Min.: 18V at Idle (for 1 rail)
Vpp Max.: 90V at 5000rpm (for 1 rail)
42 Motor [+] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: Battery voltage
Frewheeling: Max. 0.1V
Reverse direction
Turn on: Max. 0.1V
Frewheeling: Max. 0.1V
43 -      
44 -      
45 -      
46 -      
47 -      
48 -      
49 -      
50 -      
51 -      
52 -      
53 -      
54 Sensor ground Idle DC Max. 50mV
55 -      
56 Sensor shield ground Idle DC Max. 50mV
57 Immobilizer communication line When communicating after IG ON Pulse Hi: Min. 8.5V
Lo: Max. 3.5V
58 Sensor ground Idle DC Max. 50mV
59 Intake Air Temperature Sensor (IATS) signal input Idle Analog Min. 0.1V ~ Max. 4.7V
60 -      
61 Sensor ground Idle DC Max. 50mV
62 Sensor ground Idle DC Max. 50mV
63 Engine Coolant Temperature Sensor (ECTS) signal input Idle Analog Min. 0.1V ~ Max. 4.7V
64 Ignition Coil (Cylinder #3) control output Idle Pulse Turn on: Max. 1.6V
Turn off: Battery voltage
Ignition Coil (Cylinder #2) control output
65 -      
66 -      
67 -      
68 -      
69 -      
70 -      
71 -      
72 -      
73 -      
74 -      
75 Throttle Position Sensor (TPS) 2 signal input Idle Analog Min. 0.4V ~ Max. 4.5V
76 -      
77 Sensor ground Idle DC Max. 50mV
78 -      
79 Battery Sensor signal Idle Analog Min. 0.3V ~ Max. 4.7V
80 -      
81 -      
82 Manifold Absolute Pressure Sensor (MAPS) signal input Idle Analog Min. 0.8V ~ Max. 4.2V
83 VIP (Current Pump) Idle Analog Min. 0.2V ~ Max. 5.2V
84 VG (Virtual Ground) Idle Analog Min. 0.2V ~ Max. 5.2V
85 Ignition Coil (Cylinder #1) control output Idle Pulse Turn on: Max. 1.6V
Turn off: Battery voltage
Ignition Coil (Cylinder #4) control output
86 -      
87 -      
88 -      
89 -      
90 -      
91 -      
92 -      
93 -      
94 -      
95 -      
96 Throttle Position Sensor (TPS) 1 signal input Idle Analog Min. 0.4V ~ Max. 4.5V
97 -      
98 Knock Sensor (KS) signal input Idle Analog/Frequency Freq.: Min. 8KHz ~ Max. 12KHz
Level: Min. 180 ~ Max. 300mVpp
99 -      
100 Battery Current Direct Input Idle Analog Min. 0.4V ~ Max. 4.5V
101 -      
102 -      
103 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
104 VRC (Current Adjust) Idle Analog Min. 0.2V ~ Max. 5.2V
105 VN (NERNST Cell Voltage) Idle Analog Min. 0.2V ~ Max. 5.2V
CONNECTOR PIN REFERENCE [CNG-AB]

Pin No. Description Condition Type Level
1 Power ground Idle DC Max. 50mV
2 Power ground Idle DC Max. 50mV
3 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
4 Power ground Idle DC Max. 50mV
5 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
6 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
7 -      
8 -      
9 -      
10 Brake Test Switch signal input Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~Max. 0.5V
11 A/C Compressor switch signal output Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~Max. 0.5V
12 -      
13 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
14 -      
15 Electrical load signal input Idle PWM Battery voltage
16 Alternator PWM control output IG OFF PWM Battery voltage
IG ON Max. 0.5V
17 -      
18 Cooling Fan Relay [High] control output IG OFF DC Battery voltage
IG ON Min. -0.3V ~Max. 1.2V
19 Immobilizer Lamp control output Lamp ON DC Min. -0.3V ~ Max. 1.2V
Lamp OFF Battery voltage
20 ETC Motor [+] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: Battery voltage
Frewheeling: Max. 0.1V
Reverse direction
Turn on: Max. 0.1V
Frewheeling: Max. 0.1V
21 ETC Motor [-] control output Idle PWM Operating freq.: 1000Hz (estimated)
Forward direction
Turn on: max 0.1V
Frewheeling: max 0.1V
Reverse direction
Turn on: Battery voltage
Frewheeling: max 0.1V
22 Electrical load [Wiper] signal input Idle PWM Battery voltage
23 Injector (Cylinder #1) control output Idle DC Hi: Battery voltage
LO: Max. 0.5V
48~50V
24 -      
25 -      
26 -      
27 Brake Light Switch signal input Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~Max. 0.5V
28 A/C request switch signal output Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~Max. 0.5V
29 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
30 Sensor power (+5V) IG OFF DC Max. 0.5V
IG ON Min. 4.75V ~ Max. 5.25V
31 -      
32 -      
33 Cooling Fan Relay [Low] control output IG OFF PWM Battery voltage
IG ON Min. -0.3V ~Max. 1.2V
34 -      
35 -      
36 -      
37 -      
38 -      
39 -      
40 Injector (Cylinder #3) control output Idle DC Hi: Battery voltage
LO: Max. 0.5V
48~50V
41 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
42 -      
43 -      
44 Sensor ground Idle DC Max. 50mV
45 A/C Pressure Transducer (APT) signal input      
46 Sensor ground Idle DC Max. 50mV
47 Sensor ground Idle DC Max. 50mV
48 -      
49 Sensor ground Idle DC Max. 50mV
50 -      
51 -      
52 Start Motor control switch Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~ Max. 0.5V
53 Main Relay control output IG OFF DC Min. -.03V ~Max. 1.2V
IG ON Battery Voltage
54 -      
55 -      
56 -      
57 Injector (Cylinder #4) control output Idle DC Hi: Battery voltage
LO: Max. 0.5V
48~50V
58 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
59 CCP CAN [Low] RECESSIVE Pulse 2.0~3.0V
DOMINANT 0~0.5V
60 C-CAN [Low] RECESSIVE Pulse 2.0~3.0V
DOMINANT 0~0.5V
61 -      
62 -      
63 Accelerator Position Sensor (APS) 1 signal input Idle Analog Min. 0.6V ~Max. 4.3V
64 Accelerator Position Sensor (APS) 2 signal input Idle Analog Min. 0.3V ~Max. 2.1V
65 Blower Max. signal input Idle Analog Min. 0.5V ~Max. 4V
66 -      
67 A/C Compressor Relay control output Relay OFF DC Battery voltage
Relay ON Min. -0.3V ~Max. 1.2V
68 Variable Intake Solenoid (VIS) Valve control output      
69 -      
70 Fuel Pump Relay control output Relay OFF DC Battery Voltage
Relay ON   Min. -.03V ~Max. 1.2V
71 Engine speed signal output Idle Frequency Around 26Hz at 850rpm, idle
Around 16Hz at 3000rpm
72 -      
73 -      
74 Injector (Cylinder #2) control output Idle DC Hi: Battery voltage
LO: Max. 0.5V
48~50V
75 Battery power (B+) IG OFF DC Max. 0.5V
IG ON Battery Voltage
76 CCP CAN [High] RECESSIVE Pulse 2.0~3.0V
DOMINANT 2.75~4.5V
77 C-CAN [High] RECESSIVE Pulse 2.0~3.0V
DOMINANT 2.75~4.5V
78 Vehicle speed signal input Idle Frequency Duty rate 40% ~ 60%
79 -      
80 Sensor ground Idle DC Max. 50mV
81 Fuel Tank Pressure Sensor (FTPS) signal input Idle Analog Min. 0.4V ~Max. 4.6V
82 Start Motor control switch Switch ON Digital Battery voltage
Switch OFF Min. -0.3V ~ Max. 0.5V
83 Fuel Level Sensor (FLS) signal input Idle Analog Min. 0.2V ~Max. 4.7V
84 CVVT Oil Control (OCV) Valve [Bank 1/Exhaust] control output Idle PWM Operating freq. range: 300Hz
Duty rate: 0% ~ 100%
85 CVVT Oil Control (OCV) Valve [Bank 1/Intake] control output Idle PWM Operating freq. range: 300Hz
Duty rate: 0% ~ 100%
86 Purge Control Solenoid Valve (PCSV) control output Relay OFF DC Battery voltage
Relay ON Max. 1.76V
87 Canister Close Valve (CCV) control output Inactive DC Min. -0.3V ~ Max. 1.2V
Active Battery voltage
88 -      
89 -      
90 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2] Heater control output Relay OFF DC Battery voltage
Relay ON Max. 0.5V
91 Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 1] Heater control output Relay OFF DC Battery voltage
Relay ON Max. 0.5V
Factory Service Tools

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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