СИСТЕМА ECD

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Tip: Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Look under "Terminal No. (Symbol)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition". Use the illustration above as a reference for the ECM terminals.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
B88-2 (BATT) - D105-109 (E1)	W - BR	Battery (for measuring the battery voltage and for the ECM memory)	Always	11 to 14 V
B88-25 (IGSW) - D105-109 (E1)	B - BR	Ignition switch	Ignition switch ON	11 to 14 V
B88-1 (+B) - D105-109 (E1)	L - BR	Power source of ECM	Ignition switch ON	11 to 14 V
B88-28 (MREL) - D105-109 (E1)	G - BR	EFI MAIN relay	Ignition switch ON	11 to 14 V
B88-28 (MREL) - D105-109 (E1)	G - BR	EFI MAIN relay	10 seconds elapsed after ignition switch off	0 to 1.5 V
B88-53 (VPA) - B88-54 (EPA)	L - G	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully released	0.6 to 1.0 V
B88-53 (VPA) - B88-54 (EPA)	L - G	Accelerator pedal position sensor (for engine control)	Ignition switch ON, accelerator pedal fully depressed	2.9 to 4.2 V
B88-56 (VPA2) - B88-57 (EPA2)	B - GR	Accelerator pedal position sensor (for sensor malfunction detection)	Ignition switch ON, accelerator pedal fully released	1.4 to 1.8 V
B88-56 (VPA2) - B88-57 (EPA2)	B - GR		Ignition switch ON, accelerator pedal fully depressed	3.7 to 5.0 V
B88-55 (VCPA) - B88-54 (EPA)	W - G	Power source of accelerator pedal position sensor (for VPA)	Ignition switch ON	4.5 to 5.0 V
B88-58 (VCP2) - B88-57 (EPA2)	R - GR	Power source of accelerator pedal position sensor (for VPA2)	Ignition switch ON	4.5 to 5.0 V
D105-110 (THA) - D105-87 (ETHB)	R - Y	IAT sensor	Idling, intake air temperature at 20°C (68°F)	0.5 to 3.4 V
D105-111 (THW) - D105-88 (ETHW)	R-W - Y	ECT sensor	Idling, engine coolant temperature at 80°C (176°F)	0.2 to 1.0 V
D105-113 (THIA) - D105-90 (ETHI)	R - Y	IAT sensor (Turbo)	Idling, intake air temperature at 0 to 80°C (32 to 176°F)	0.5 to 3.4 V
D105-114 (RTHW) - D105-74 (E2)	L - Y	Engine coolant temperature (radiator) sensor	Idling, radiator side engine coolant temperature at 80°C (176°F)	0.5 to 4.5 V
B88-36 (STA) - D105-109 (E1)	R - BR	Starter signal	Cranking	6.0 V or more
D105-50 (#1) - D105-109 (E1) D105-49 (#2) - D105-109 (E1) D105-48 (#3) - D105-109 (E1) D105-47 (#4) - D105-109 (E1)	G - BR GR - BR Y - BR B - BR	Injector	Idling	Pulse generation (see waveform 1)
D105-103 (NE+) - D105-102 (NE-)	B - W	Crankshaft position sensor	Idling	Pulse generation (see waveform 2)
D105-80 (G+) - D105-79 (G-)	R - G	Camshaft position sensor	Idling	Pulse generation (see waveform 2)
B88-35 (STP) - D105-109 (E1)	Y - BR	Stop light switch	Ignition switch ON, brake pedal depressed	7.5 to 14 V
B88-35 (STP) - D105-109 (E1)	Y - BR	Stop light switch	Ignition switch ON, brake pedal released	0 to 1.5 V
B88-34 (ST1-) - D105-109 (E1)	R - BR	Stop light switch (opposite to STP)	Ignition switch ON, brake pedal depressed	0 to 1.5 V
B88-34 (ST1-) - D105-109 (E1)	R - BR	Stop light switch (opposite to STP)	Ignition switch ON, brake pedal released	7.5 to 14 V
B88-26 (TC) - D105-109 (E1)	G - BR	Terminal TC of DLC3	Ignition switch ON	11 to 14 V
B88-14 (SPD) - D105-109 (E1)	P - BR	Speed signal from combination meter	Ignition switch ON, slowly rotate wheel	Pulse generation (see waveform 3)
D105-118 (EGLS) - D105-95 (EEGL)	P - Y	EGR valve position sensor	Ignition switch ON	1.03 to 1.37 V
D105-94 (VCEG) - D105-95 (EEGL)	L - Y	Power source of EGR valve position sensor	Ignition switch ON	4.5 to 5.5 V
D105-117 (PIM) - D105-116 (EPIM)	P - Y	Manifold absolute pressure sensor	Apply negative pressure of 40 kPa (300 mmHg, 11.8 in.Hg)	0.1 to 0.7 V
			Same as atmospheric pressure	0.8 to 1.5 V
			Apply positive pressure of 170 kPa (1275 mmHg, 50.2 in.Hg)	1.6 to 2.3 V
D105-93 (VCPM) - D105-116 (EPIM)	L - Y	Power source of manifold absolute pressure sensor	Ignition switch ON	4.5to 5.5 V
B88-29 (IREL) - D105-109 (E1)	R - BR	EDU relay	Ignition switch ON	0 to 1.5 V
B88-13 (TACH) - D105-109 (E1)	B - BR	Engine speed	Idling	Pulse generation (see waveform 4)
D105-66 (PCR1) - D105-67 (E2S)	P - Y	Fuel pressure sensor	Idling	1.7 to 2.2 V
D105-68 (VCS) - D105-67 (E2S)	L - Y	Power source of fuel pressure sensor	Ignition switch ON	4.5 to 5.5 V
D105-58 (GREL) - D105-109 (E1)	G - BR	GLOW relay	Cranking	11 to 14 V
D105-112 (THF) - D105-89 (ETHF)	R - Y	Fuel temperature sensor	Ignition switch ON	0.5 to 3.4 V
D105-54 (ALT) - D105-109 (E1)	W - BR	Generator duty ratio	Idling	Pulse generation (see waveform 5)
D105-41 (PCV+) - D105-81 (PCV-)	P - Y	Suction control valve	Idling	Pulse generation (see waveform 6)
D105-51 (INJF) - D105-109 (E1)	LG - BR	EDU	Idling	Pulse generation (see waveform 7)
D105-119 (VLU) - D105-96 (EVLU)	R - Y	Throttle position sensor	Ignition switch ON, throttle valve fully opened	3.6 to 4.2 V
D105-119 (VLU) - D105-96 (EVLU)	R - Y	Throttle position sensor	Ignition switch ON, throttle valve fully closed	0.4 to 1.0 V
D105-97 (VCVL) - D105-96 (EVLU)	L - Y	Power source of throttle position sensor	Ignition switch ON	4.98 to 5.02 V
D105-78 (LUSL) - D105-109 (E1)	B - BR	Diesel throttle motor duty signal	Engine warmed up, racing engine	Pulse generation (see waveform 8)
D105-83 (EGR) - D105-109 (E1)	B - BR	VRV for EGR	Ignition switch ON	Pulse generation (see waveform 9)
D105-38 (NSW)* - D105-109 (E1)	B - BR	Park/neutral position switch assembly	Ignition switch ON, shift lever in P or N	Below 3 V
D105-38 (NSW)* - D105-109 (E1)	B - BR	Park/neutral position switch assembly	Ignition switch ON, shift lever not in P and N	11 to 14 V
B88-6 (CANH) - D105-109 (E1)	B - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 10)
B88-7 (CANL) - D105-109 (E1)	W - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 11)
B88-4 (CAN+)* - D105-109 (E1)	L - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 10)
B88-5 (CAN-)* - D105-109 (E1)	Y - BR	CAN communication line	Ignition switch ON	Pulse generation (see waveform 11)

Tip:

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WAVEFORM 1 Table 1. Injector No. 1 (to No. 4) injection signal ECM Terminal Name (a) Between #1 and E1 (b) Between #3 and E1 (c) Between #4 and E1 (d) Between #2 and E1 Tester Range 5 V/DIV., 20 msec./DIV. Condition Idling with warm engine Tip: The waveform varies depending on the injector injection. WAVEFORM 2 Table 2. Crankshaft position sensor signal and Camshaft position sensor signal ECM Terminal Name (a) Between NE+ and NE- (b) Between G+ and G- Tester Range 5 V/DIV., 20 msec./DIV. Condition Idling with warm engine Tip: The waveform varies depending on the engine speed. WAVEFORM 3 Table 3. Vehicle speed signal ECM Terminal Name Between SPD and E1 Tester Range 5 V/DIV., 10 msec./DIV. Condition Driving at vehicle speed of 40 km/h (25 mph) Tip: The wavelength becomes shorter as the vehicle speed increases. WAVEFORM 4 Table 4. Engine speed signal ECM Terminal Names Between TACH and E1 Tester Ranges 5 V/DIV., 10 msec./DIV. Conditions Idling Tip: The wavelength becomes shorter as the engine rpm increases. WAVEFORM 5 Table 5. Generator duty ratio signal ECM Terminal Names Between ALT and E1 Tester Ranges 5 V/DIV., 2 msec./DIV. Conditions Idling Tip: The wavelength becomes shorter as the engine rpm increases. WAVEFORM 6 Table 6. Suction control valve signal ECM Terminal Name Between PCV+ and PCV- Tester Range 10 V/DIV., 5 msec./DIV. Condition Idling or cranking with warm engine Tip: The waveform varies depending on the suction control valve operation. WAVEFORM 7 Table 7. Injector injection confirmation signal ECM Terminal Name Between INJF and E1 Tester Range 2 V/DIV., 20 msec./DIV. Condition Idling with warm engine Tip: The waveform varies depending on the injector injection. WAVEFORM 8 Table 8. Diesel throttle motor signal ECM Terminal Name Between LUSL and E1 Tester Range 1 V/DIV., 2 msec./DIV. Condition Warm engine with racing engine Tip: The waveform varies depending on the throttle valve operation. WAVEFORM 9 Table 9. VRV for EGR Signal ECM Terminal Name Between EGR and E1 Tester Range 5 V/DIV., 1 msec./DIV. Condition Idling with warm engine Tip: The waveform varies depending on the VRV for EGR operation. WAVEFORM 9 Table 10. CAN Communication Signal ECM Terminal Name Between CANH and E1 Between CAN+ and E1 Tester Range 1 V/DIV., 10 msec./DIV. Condition Engine is stopped, ignition switch ON Tip: The waveform varies depending on the CAN communication signal. WAVEFORM 10 Table 11. CAN Communication Signal ECM Terminal Name Between CANL and E1 Between CAN- and E1 Tester Range 1 V/DIV., 10 msec./DIV. Condition Engine is stopped, ignition switch ON Tip: The waveform varies depending on the CAN communication signal.

СИСТЕМА ECD КОНТАКТЫ ECM