ECM Inputs and Outputs at Connector C (○) (44P)
NOTE: Standard battery voltage is about 12 V.
Terminal number
Wire color
Terminal name
Description
Signal
22
WHT/BLK
POILCS (ENGINE OIL PRESSURE (EOP) SENSOR)
Detects EOP sensor signal
With ignition switch ON (II): about 0.7 V
With engine running: about 0.7 V (depending on engine oil pressure)
27
WHT/RED
SHO2S (SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S) (SENSOR 2))
Detects secondary HO2S (sensor 2) signal
With throttle fully opened at idle and fully warmed up engine: about 0.6 V
With throttle quickly closed: below 0.4 V
29
RED
AFS+ (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) +SIDE)
Detects A/F sensor (sensor 1) signal
With ignition switch ON (II): about 2.2 V
30
RED/YEL
AFS− (AIR FUEL RATIO (A/F) SENSOR (SENSOR 1) −SIDE)
Detects A/F sensor (sensor 1) signal
With ignition switch ON (II): about 1.8 V
31
WHT/GRN
CMP (CAMSHAFT POSITION (CMP) SENSOR)
Detects CMP sensor signal
With engine running: pulses
32
BLU/WHT
CKP (CRANKSHAFT POSITION (CKP) SENSOR)
Detects CKP sensor signal
With engine running: pulses
36
BLK/YEL
IG1 (IGNITION SIGNAL)
Detects ignition signal
With ignition switch ON (II): battery voltage
37
ORN
OILLVL (ENGINE OIL LEVEL SENSOR SIGNAL)
Detects engine oil level sensor signal
With ignition switch ON (II): pulses
39
BLU
SG3 (SENSOR GROUND)
Sensor ground
Less than 1.0 V at all times
40
BRN/YEL
LG1 (LOGIC GROUND)
Ground circuit for ECM circuit
Less than 1.0 V at all times
42
RED/BLU
KS (KNOCK SENSOR)
Detects knock sensor signal
With engine knocking: pulses
43
BLK/BLU
NC (OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR)
Detects output shaft (countershaft) speed sensor signals
With ignition switch ON (II): pulses
With vehicle moving: about 5.0 V (pulses)
44
BRN/YEL
LG2 (LOGIC GROUND)
Ground circuit for ECM circuit
Less than 1.0 V at all times