DYNAMIC RADAR CRUISE CONTROL SYSTEM TERMINALS OF ECU
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CHECK ECM (for 3UR-FE)
Tech Tips
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition C53*1-81 (E1) - Body ground
C54*2-81 (E1) - Body ground
W-B - Body ground ECM ground Always Below 1 Ω C53*1-49 (D) - Body ground
C54*2-49 (D) - Body ground
P - Body ground D shift position signal Engine switch on (IG)
Shift lever in D
11 to 14 V Engine switch on (IG)
Shift lever not in D
Below 1 V A38*1-39 (SFTU) - Body ground
A87*2-39 (SFTU) - Body ground
V - Body ground Up-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in +
Below 1 V Engine switch on (IG) and "+" shift paddle operated (up-shift)*3 Below 1 V A38*1-27 (S) - Body ground
A87*2-27 (S) - Body ground
W - Body ground S shift position switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever not in S
Below 1 V A38*1-47 (SFTD) - Body ground
A87*2-47 (SFTD) - Body ground
L - Body ground Down-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in -
Below 1 V Engine switch on (IG) and "-" shift paddle operated (down-shift)*3 Below 1 V A38*1-7 (STP) - Body ground
A87*2-7 (STP) - Body ground
R - Body ground Stop light signal Brake pedal depressed 7.5 to 14 V Brake pedal released 0 to 1.5 V A38*1-8 (ST1-) - Body ground
A87*2-8 (ST1-) - Body ground
P - Body ground Stop light signal (opposite to STP terminal) Engine switch on (IG)
Brake pedal depressed
0 to 1.5 V Engine switch on (IG)
Brake pedal released
7.5 to 14 V A38*1-60 (CCS) - A85*1- 59 (ECCS)
A87*2-60 (CCS) - A87*2- 59 (ECCS)
L - BR Cruise control main switch signal Engine switch on (IG)
Main switch off
1 MΩ or higher Engine switch on (IG)
CANCEL switch held on
1510 to 1570 Ω Engine switch on (IG)
-SET switch held on
620 to 640 Ω Engine switch on (IG)
+RES switch held on
235 to 245 Ω Engine switch on (IG)
Main switch on
Below 2.5 Ω
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*1: for LHD
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*2: for RHD
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*3: w/ Shift Paddle Switch
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CHECK ECM (for 1VD-FTV (w/ DPF))
Tech Tips
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of the checks should be compared with the standard normal voltage for that pair of terminals, which is displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition C110*1-81 (E1) - Body ground
C138*2-81 (E1) - Body ground
BR - Body ground ECM ground Always Below 1 Ω C110*1-28 (D) - Body ground
C138*2-28 (D) - Body ground
P - Body ground D shift position signal Engine switch on (IG)
Shift lever in D
11 to 14 V Engine switch on (IG)
Shift lever not in D
Below 1 V A85*1-38 (SFTU) - Body ground
A86*2-38 (SFTU) - Body ground
V - Body ground Up-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in "+"
Below 1 V Engine switch on (IG) and "+" shift paddle operated (up-shift)*3 Below 1 V A85*1-25 (S) - Body ground
A86*2-25 (S) - Body ground
W - Body ground S shift position switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever not in S
Below 1 V A85*1-37 (SFTD) - Body ground
A86*2-37 (SFTD) - Body ground
L - Body ground Down-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in "-"
Below 1 V Engine switch on (IG) and "-" shift paddle operated (down-shift)*3 Below 1 V A85*1-13 (STP) - Body ground
A86*2-13 (STP) - Body ground
R - Body ground Stop light signal Brake pedal depressed 7.5 to 14 V Brake pedal released 0 to 1.5 V A85*1-35 (ST1-) - Body ground
A86*2-35 (ST1-) - Body ground
P - Body ground Stop light signal (opposite to STP terminal) Engine switch on (IG)
Brake pedal depressed
0 to 1.5 V Engine switch on (IG)
Brake pedal released
7.5 to 14 V A85*1-40 (CCS) - Body ground
A86*2-40 (CCS) - Body ground
L - Body ground Cruise control main switch signal Engine switch on (IG)
Main switch off
1 MΩ or higher Engine switch on (IG)
CANCEL switch held on
1510 to 1570 Ω Engine switch on (IG)
-SET switch hed on
620 to 640 Ω Engine switch on (IG)
+RES switch held on
235 to 245 Ω Engine switch on (IG)
Main switch on
Below 2.5 Ω
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*1: for LHD
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*2: for RHD
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*3: w/ Shift Paddle Switch
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CHECK ECM (for 1VD-FTV (w/o DPF))
Tech Tips
The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of the checks should be compared with the standard normal voltage for that pair of terminals, which is displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition C110-81 (E1) - Body ground BR - Body ground ECM ground Always Below 1 Ω C110-28 (D) - Body ground P - Body ground D shift position signal Engine switch on (IG)
Shift lever in D
11 to 14 V Engine switch on (IG)
Shift lever not in D
Below 1 V A85-38 (SFTU) - Body ground V - Body ground Up-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in "+"
Below 1 V Engine switch on (IG) and "+" shift paddle operated (up-shift)* Below 1 V A85-25 (S) - Body ground W - Body ground S shift position switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever not in S
Below 1 V A85-37 (SFTD) - Body ground L - Body ground Down-shift switch signal Engine switch on (IG)
Shift lever in S
11 to 14 V Engine switch on (IG)
Shift lever in "-"
Below 1 V Engine switch on (IG) and "-" shift paddle operated (down-shift)* Below 1 V A85-13 (STP) - Body ground R - Body ground Stop light signal Brake pedal depressed 7.5 to 14 V Brake pedal released 0 to 1.5 V A85-35 (ST1-) - Body ground P - Body ground Stop light signal (opposite to STP terminal) Engine switch on (IG)
Brake pedal depressed
0 to 1.5 V Engine switch on (IG)
Brake pedal released
7.5 to 14 V A85-40 (CCS) - Body ground L - Body ground Cruise control main switch signal Engine switch on (IG)
Main switch off
1 MΩ or higher Engine switch on (IG)
CANCEL switch held on
1510 to 1570 Ω Engine switch on (IG)
-SET switch hed on
620 to 640 Ω Engine switch on (IG)
+RES switch held on
235 to 245 Ω Engine switch on (IG)
Main switch on
Below 2.5 Ω
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*: w/ Shift Paddle Switch
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CHECK DRIVING SUPPORT ECU ASSEMBLY
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E138-3 (BZ) - E138-28 (GND) L - BR Pre-collision city buzzer output Engine switch on (IG), skid control buzzer not sounding 11 to 14 V E138-7 (B) - E138-28 (GND) P - BR Power source Engine switch on (IG) 11 to 14 V E138-8 (CA1P) - E138-28 (GND) W - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)
E138-9 (CA1N) - E138-28 (GND) P - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)
E138-10 (CA2H) - E138-28 (GND) L - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 1)
E138-11 (CA2L) - E138-28 (GND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(See waveform 2)
E138-23 (SPSW) - E138-28 (GND) W - BR Steering pad switch signal (Distance control switch signal) Engine switch on (IG), Vehicle-to-vehicle distance control switch on Below 1 Ω E138-23 (SPSW) - E138-28 (GND) W - BR Steering pad switch signal (Distance control switch signal) Engine switch on (IG), Vehicle-to-vehicle distance control switch off 4.75 to 5.25 V E138-28 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω
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*a 1 V/DIV. *b 10 μsec./DIV. WAVEFORM 1
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CAN communication signal
Item Content Terminal Name Between E138-8 (CA1P) and E138-28 (GND)
Between E138-10 (CA2H) and E138-28 (GND)
Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) Tech Tips
The waveform varies depending on the CAN communication signal.
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*a 1 V/DIV. *b 10 μsec./DIV. WAVEFORM 2
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CAN communication signal
Item Content Terminal Name Between E138-9 (CA1N) and E138-28 (GND)
Between E138-11 (CA2L) and E138-28 (GND)
Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) Tech Tips
The waveform varies depending on the CAN communication signal.
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CHECK MILLIMETER WAVE RADAR SENSOR
Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition A67-1 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω A67-2 (CA2L) - A67-1 (SGND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(see waveform 2)
A67-3 (CA2H) - A67-1 (SGND) L - BR CAN communication signal Engine switch on (IG) Pulse generation
(see waveform 1)
A67-5 (CA1P) - A67-1 (SGND) B - BR CAN communication signal Engine switch on (IG) Pulse generation
(see waveform 1)
A67-6 (CA1N) - A67-1 (SGND) P - BR CAN communication signal Engine switch on (IG) Pulse generation
(see waveform 2)
A67-8 (IGB) - A67-1 (SGND) G - BR Power source Engine switch on (IG) 11 to 14 V
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*a 1 V/DIV. *b 10 μsec./DIV. WAVEFORM 1
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CAN communication signal
Item Content Terminal Name Between A67-3 (CA2H) and A67-1 (SGND)
Between A67-5 (CA1P) and A67-1 (SGND)
Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) Tech Tips
The waveform varies depending on the CAN communication signal.
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*a 1 V/DIV. *b 10 μsec./DIV. WAVEFORM 2
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CAN communication signal
Item Content Terminal Name Between A67-2 (CA2L) and A67-1 (SGND)
Between A67-6 (CA1N) and A67-1 (SGND)
Tester Range 1 V/DIV., 10 μsec./DIV. Condition Engine switch on (IG) Tech Tips
The waveform varies depending on the CAN communication signal.
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