Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - CRUISE CONTROL
DYNAMIC RADAR CRUISE CONTROL SYSTEM - TERMINALS OF ECU
| CHECK ECM (for 1UR-FE) |
- HINT:
- As the ECM connector is a waterproof connector, it is not possible to check the voltage of each terminal or check the waveform with an oscilloscope while the ECM is installed in the vehicle.
Disconnect the A38*1 and C45*1 or A52*2 and C46*2 ECM connectors.
*1: for LHD
*2: for RHD
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| A38*1-16 (TC) - Body ground A52*2-16 (TC) - Body ground | V-W - Body ground | Terminal TC of DLC3 | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| C45*1-81 (E1) - Body ground C46*2-81 (E1) - Body ground | BR - Body ground | ECM ground | Always | Below 1 Ω |
| C45*1-27 (D) - Body ground C46*2-27 (D) - Body ground | G - Body ground | Park/neutral position switch 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*1-38 (SFTU) - Body ground A52*2-38 (SFTU) - Body ground | Y - Body ground | Park/neutral position switch signal | Engine switch on (IG) Shift lever in S | Below 1 Ω |
| Engine switch on (IG) Shift lever in + | 10 kΩ or higher | |||
| A38*1-25 (S) - Body ground A52*2-25 (S) - Body ground | W - Body ground | Park/neutral 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*1-27 (SFTD) - Body ground A52*2-27 (SFTD) - Body ground | L - Body ground | Park/neutral position switch signal | Engine switch on (IG) Shift lever in S | 10 kΩ or higher |
| Engine switch on (IG) Shift lever in - | Below 1 Ω | |||
| A38*1-36 (STP) - Body ground A52*2-36 (STP) - Body ground | R - Body ground | Stop light signal | Engine switch on (IG) Brake pedal depressed | 11 to 14 V |
| Engine switch on (IG) Brake pedal released | Below 1 V | |||
| A38*1-35 (ST1-) - Body ground A52*2-35 (ST1-) - Body ground | R-W - Body ground | Stop light signal (opposite to STP terminal) | Engine switch on (IG) Brake pedal depressed | Below 1 V |
| Engine switch on (IG) Brake pedal released | 11 to 14 V | |||
| A38*1-45 (CCS) - Body ground A52*2-45 (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 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 | |||
| A38*1-37 (CCHG) - Body ground A52*2-37 (CCHG) - Body ground | P-B - Body ground | Distance control switch signal | Engine switch on (IG) Main switch on MODE switch held on | Below 1 V |
| Engine switch on (IG) Main switch on MODE switch off | 11 to 14 V |
*1: for LHD
*2: for RHD
If the result is not as specified, there may be a malfunction on the wire harness side.
| CHECK ECM (for 3UR-FE) |
- HINT:
- As the ECM connector is a waterproof connector, it is not possible to check the voltage of each terminal or check the waveform with an oscilloscope while the ECM is installed in the vehicle.
Disconnect the A38 and C45 ECM connectors.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| A38-16 (TC) - Body ground | V-W - Body ground | Terminal TC of DLC3 | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| C45-81 (E1) - Body ground | W-B - Body ground | ECM ground | Always | Below 1 Ω |
| C45-27 (D) - Body ground | G - Body ground | Park/neutral position switch 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 | |||
| A38-38 (SFTU) - Body ground | Y - Body ground | Park/neutral position switch signal | Engine switch on (IG) Shift lever in S | Below 1 Ω |
| Engine switch on (IG) Shift lever in + | 10 kΩ or higher | |||
| A38-25 (S) - Body ground | W - Body ground | Park/neutral 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 | |||
| A38-27 (SFTD) - Body ground | L - Body ground | Park/neutral position switch signal | Engine switch on (IG) Shift lever in S | 10 kΩ or higher |
| Engine switch on (IG) Shift lever in - | Below 1 Ω | |||
| A38-36 (STP) - Body ground | R - Body ground | Stop light signal | Engine switch on (IG) Brake pedal depressed | 11 to 14 V |
| Engine switch on (IG) Brake pedal released | Below 1 V | |||
| A38-35 (ST1-) - Body ground | R-W - Body ground | Stop light signal (opposite to STP terminal) | Engine switch on (IG) Brake pedal depressed | Below 1 V |
| Engine switch on (IG) Brake pedal released | 11 to 14 V | |||
| A38-45 (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 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 | |||
| A38-37 (CCHG) - Body ground | P-B - Body ground | Distance control switch signal | Engine switch on (IG) Main switch on MODE switch held on | Below 1 V |
| Engine switch on (IG) Main switch on MODE switch off | 11 to 14 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
| CHECK DISTANCE CONTROL ECU |
Disconnect the E108 distance control ECU connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| E108-1 (B) - Body ground | R - Body ground | Distance control ECU power source line | Engine switch on (IG) | 11 to 14 V |
| E108-3 (WASH) - Body ground | L - Body ground | Windshield wiper switch signal | Engine switch on (IG) Windshield wiper switch on | 11 to 14 V |
| Engine switch on (IG) Windshield wiper switch off | Below 1 V | |||
| E108-12 (GND) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
| E108-13 (IGB) - Body ground | R - Body ground | Engine switch on (IG) signal | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| E108-16 (MODE) - Body ground | W - Body ground | Distance control switch signal | Engine switch on (IG) Distance control switch on | Below 1 V |
| Engine switch on (IG) Distance control switch off | 11 to 14 V | |||
| E108-22 (LRDD) - E108-10 (SGND) | B - R | Millimeter wave radar sensor input signal | Engine switch on (IG) | Pulse generation (See waveform 1) |
| E108-23 (LRRD) - E108-10 (SGND) | W - R | Millimeter wave radar sensor output signal | Engine switch on (IG) | Pulse generation (See waveform 2) |
If the result is not as specified, there may be a malfunction on the wire harness side.
Using an oscilloscope, check waveform 1.
| Item | Content |
| Terminal No. (Symbol) | E108-22 (LRDD) - E108-10 (SGND) |
| Tool Setting | 2 V/DIV., 10 msec./DIV. |
| Condition | Engine switch on (IG) |
Using an oscilloscope, check waveform 2.
| Item | Content |
| Terminal No. (Symbol) | E108-23 (LRRD) - E108-10 (SGND) |
| Tool Setting | 2 V/DIV., 5 msec./DIV. |
| Condition | Engine switch on (IG) |
| CHECK MILLIMETER WAVE RADAR SENSOR |
Disconnect the A56 millimeter wave radar sensor connector.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| A56-3 (LRDD) - A56-2 (SGND) | B - R | Millimeter wave radar sensor output signal | Engine switch on (IG) | Pulse generation (See waveform 3) |
| A56-4 (LRRD) - A56-2 (SGND) | W - R | Millimeter wave radar sensor input signal | Engine switch on (IG) | Pulse generation (See waveform 4) |
| A56-5 (IGB) - A56-2 (SGND) | R - R | Engine switch on (IG) signal | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V |
If the result is not as specified, there may be a malfunction on the wire harness side.
Using an oscilloscope, check waveform 3.
| Item | Content |
| Terminal No. (Symbol) | A56-3 (LRDD) - A56-2 (SGND) |
| Tool Setting | 2 V/DIV., 10 msec./DIV. |
| Condition | Engine switch on (IG) |
Using an oscilloscope, check waveform 4.
| Item | Content |
| Terminal No. (Symbol) | A56-4 (LRRD) - A56-2 (SGND) |
| Tool Setting | 2 V/DIV., 5 msec./DIV. |
| Condition | Engine switch on (IG) |