Toyota Tundra (2015 year). Manual — part 1079
Last Modified: 9-16-2014
6.6 U
Doc ID: RM000000PDH0QMX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS OF ECM; 2015 MY Tundra [08/2014 -
]
TERMINALS OF ECM
1. CHECK ECM
(a) Measure the voltage according to the value(s) in the table below.
HINT:
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL DESCRIPTION
CONDITION
SPECIFIED
CONDITION
A24-1 (BATT) -
D74-81 (E1)
L - BR
Battery (for measuring battery
voltage and for ECM memory)
Always
11 to 14 V
D74-41 (+BM) -
D74-81 (E1)
P - BR
Always
11 to 14 V
A24-28 (IGSW) -
D74-81 (E1)
LG - BR
Ignition switch
Ignition switch ON
11 to 14 V
A24-3 (+B) -
D74-81 (E1)
GR - BR
11 to 14 V
A24-2 (+B2) -
D74-81 (E1)
GR - BR
11 to 14 V
D74-58 (OC1+) -
D74-57 (OC1-)
B - B-L
Camshaft oil control valve
(OCV) (for Intake Side of
Bank 1)
Idling
Pulse
generation
(see waveform
1)
D74-52 (OC2+) -
D74-51 (OC2-)
L-B - R-B
Camshaft oil control valve
(OCV) (for Intake Side of
Idling
Pulse
generation
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS...
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL DESCRIPTION
CONDITION
SPECIFIED
CONDITION
Bank 2)
(see waveform
1)
D74-56 (OE1+) -
D74-55 (OE1-)
L-W - L-B
Camshaft oil control valve
(OCV) (for Exhaust Side of
Bank 1)
Idling
Pulse
generation
(see waveform
1)
D74-50 (OE2+) -
D74-49 (OE2-)
L-R - L
Camshaft oil control valve
(OCV) (for Exhaust Side of
Bank 2)
Idling
Pulse
generation
(see waveform
1)
A24-34 (MREL) -
D74-81 (E1)
W - BR
EFI relay
Ignition switch ON
11 to 14 V
D74-74 (VG) -
D74-75 (E2G)
L-Y - G-W
Mass air flow meter
Idling, shift lever in P or N, A/C
switch OFF
0.5 to 3.0 V
D74-73 (THA) -
D74-98 (E2)
Y-B - BR
Intake air temperature sensor
Idling, intake air temperature
20°C (68°F)
0.5 to 3.4 V
D74-76 (THW) -
D74-98 (E2)
G-B - BR
Engine coolant temperature
sensor
Idling, engine coolant
temperature 80°C (176°F)
0.2 to 1.0 V
D74-80 (VCTA) -
D74-79 (ETA)
Y - L
voltage)
Ignition switch ON
4.5 to 5.5 V
D74-78 (VTA1) -
D74-79 (ETA)
R-Y - L
Throttle position sensor (for
engine control)
Ignition switch ON,
throttle valve fully closed
0.5 to 1.1 V
Ignition switch ON,
throttle valve fully open
3.2 to 4.8 V
D74-77 (VTA2) -
D74-79 (ETA)
Y-B - L
Throttle position sensor (for
sensor malfunction detection)
Ignition switch ON,
throttle valve fully closed
2.1 to 3.1 V
Ignition switch ON,
throttle valve fully open
4.6 to 5.0 V
A24-55 (VPA) -
A24-58 (EPA)
W - BE
Accelerator pedal position
sensor (for engine control)
Ignition switch ON,
accelerator pedal released
0.5 to 1.1 V
Ignition switch ON,
accelerator pedal fully
depressed
2.6 to 4.5 V
A24-56 (VPA2) -
A24-60 (EPA2)
LG - P
Accelerator pedal position
sensor (for sensor malfunction
detection)
Ignition switch ON,
accelerator pedal released
1.2 to 2.0 V
Ignition switch ON,
accelerator pedal fully
depressed
3.4 to 4.7 V
A24-57 (VCPA) -
A24-58 (EPA)
B - BE
VPA)
Ignition switch ON
4.5 to 5.5 V
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS...
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL DESCRIPTION
CONDITION
SPECIFIED
CONDITION
A24-59 (VCP2) -
A24-60 (EPA2)
V - P
VPA2)
Ignition switch ON
4.5 to 5.5 V
D74-22 (HA1A) -
D74-23 (E04)
L - W-B
A/F sensor heater
Idling with warm engine
Pulse
generation
(see waveform
2)
D74-22 (HA1A) -
D74-23 (E04)
L - W-B
A/F sensor heater
Ignition switch ON
11 to 14 V
D74-20 (HA2A) -
D74-21 (E05)
G - W-B
A/F sensor heater
Idling with warm engine
Pulse
generation
(see waveform
2)
D74-20 (HA2A) -
D74-21 (E05)
G - W-B
A/F sensor heater
Ignition switch ON
11 to 14 V
D74-126 (A1A+)
- D74-81 (E1)
G -BR
A/F sensor
Ignition switch ON
3.3 V*1
D74-125 (A1A-) -
D74-81 (E1)
R - BR
A/F sensor
Ignition switch ON
2.9 V*1
D74-103 (A2A+)
- D74-81 (E1)
P - BR
A/F sensor
Ignition switch ON
3.3 V*1
D74-102 (A2A-) -
D74-81 (E1)
L - BR
A/F sensor
Ignition switch ON
2.9 V*1
D74-45 (HT1B) -
D74-46 (E03)
G-B - W-B Heated oxygen sensor heater
Idling
Below 3.0 V
D74-45 (HT1B) -
D74-46 (E03)
G-B - W-B Heated oxygen sensor heater
Ignition switch ON
11 to 14 V
D74-44 (HT2B) -
D74-46 (E03)
B - W-B
Heated oxygen sensor heater
Idling
Below 3.0 V
D74-44 (HT2B) -
D74-46 (E03)
B - W-B
Heated oxygen sensor heater
Ignition switch ON
11 to 14 V
D74-114 (OX1B)
- D74-115
(EX1B)
G - L
Heated oxygen sensor
Engine speed maintained at
2500 rpm for 2 minutes after
warming up sensor
Pulse
generation
(see waveform
3)
D74-112 (OX2B)
- D74-113
(EX2B)
R - W
D74-86 (#10) -
D74-43 (E01)
R-L - W-B
Fuel injector assembly
Ignition switch ON
11 to 14 V
D74-109 (#20) -
D74-43 (E01)
L - W-B
Idling
Pulse
generation
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS...
TERMINAL NO.
(SYMBOL)
WIRING
COLOR
TERMINAL DESCRIPTION
CONDITION
SPECIFIED
CONDITION
(see waveform
4)
D74-85 (#30) -
D74-43 (E01)
R - W-B
D74-108 (#40) -
D74-43 (E01)
Y - W-B
D74-84 (#50) -
D74-43 (E01)
G - W-B
D74-107 (#60) -
D74-43 (E01)
R - W-B
D74-83 (#70) -
D74-43 (E01)
W - W-B
D74-106 (#80) -
D74-43 (E01)
R-B - W-B
D74-94 (KNK1) -
D74-93 (EKNK)
R - G
Knock sensor
Engine speed maintained at
4000 rpm after warming up
engine
Pulse
generation
(see waveform
5)
D74-117 (KNK2)
- D74-116
(EKN2)
W - B
D74-96 (KNK3) -
D74-95 (EKN3)
W - B
D74-119 (KNK4)
- D74-118
(EKN4)
R - G
D74-92 (VV1+) -
D74-91 (VV1-)
R - G
Variable valve timing (VVT)
sensor (for Intake Side of
Bank 1)
Idling
Pulse
generation
(see waveform
6)
D74-87 (VV2+) -
D74-88 (VV2-)
R - Y
Variable valve timing (VVT)
sensor (for Intake Side for
Bank 2)
Idling
Pulse
generation
(see waveform
6)
D74-69 (EV1+) -
D74-68 (EV1-)
R-L - B
Variable valve timing (VVT)
sensor (for Exhaust Side of
Bank 1)
Idling
Pulse
generation
(see waveform
17)
D74-64 (EV2+) -
D74-65 (EV2-)
R-L - B
Variable valve timing (VVT)
sensor (for Exhaust Side of
Bank 2)
Idling
Pulse
generation
(see waveform
17)
D74-110 (NE+) -
D74-111 (NE-)
W - Y
Crankshaft position sensor
Idling
Pulse
generation
(see waveform
6)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: TERMINALS...
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