Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - PARK ASSIST / MONITORING
TOYOTA PARKING ASSIST-SENSOR SYSTEM - TERMINALS OF ECU
| CHECK PARK ASSIST ECU (w/ Side Monitor System) |
Disconnect the F75 and F76 parking assist ECU connectors.
Measure the voltage and resistance according to value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| F75-1 (+B) - F75-4 (GND1) | L - W-B | Power source signal | Always | 11 to 14 V |
| F75-4 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| F76-25 (CSSW) - F75-4 (GND1) | Y - W-B | back sonar or clearance sonar switch assembly power source signal | Engine switch on (IG), back sonar or clearance sonar switch assembly on | 11 to 14 V |
| Engine switch on (IG), back sonar or clearance sonar switch assembly off | Below 1 V | |||
| F75-8 (IG) - F75-4 (GND1) | G - W-B | IG power source signal | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| F75-9 (ACC) - F75-4 (GND1) | GR - W-B | ACC power source signal | Engine switch on (ACC) | 11 to 14 V |
| Engine switch off | Below 1 V |
Reconnect the F75 and F76 parking assist ECU connectors.
Measure the voltage and waveform according to value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| F76-3 (LIN2) - F76-4 (CSG2) | LG - GR | Rear sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | Waveform 1 |
| F76-5 (CSB1) - F76-6 (CSG1) | GR - R | Front sensor circuit power source | Engine switch off | Below 1 V |
| Engine switch on (IG), back sonar or clearance sonar switch assembly on | 7.2 to 8.8 V | |||
| F75-6 (EF) - F75-7 (BBZ) | L - G | No. 1 clearance warning buzzer signal | Buzzer does not sound | Below 1 V |
| Buzzer sounding | Waveform 2 | |||
| F76-20 (CSB2) - F76-4 (CSG2) | R - GR | Rear sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | 7.2 to 8.8 V |
| Engine switch off | Below 1 V | |||
| F76-23 (LIN1) - F76-6 (CSG1) | LG - R | Front sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | Waveform 1 |
Using an oscilloscope, check waveform 1.
| Item | Content |
| Terminal No. (Symbol) | F76-3 (LIN2) - F76-4 (CSG2) F76-23 (LIN1) - F76-6 (CSG1) |
| Tool Setting | 2 V/DIV., 1 msec./DIV. |
| Condition | Engine switch on (IG), back sonar or clearance sonar switch assembly on |
Using an oscilloscope, check waveform 2.
| Item | Content |
| Terminal No. (Symbol) | F75-6 (EF) - F75-7 (BBZ) |
| Tool Setting | 5 V/DIV., 1 msec./DIV. |
| Condition | Engine switch on (IG), shift lever moved to R |
- NOTICE:
- The waveform amplitude varies depending on the volume setting.
| CHECK CLEARANCE WARNING ECU ASSEMBLY (w/o Side Monitor System) |
Disconnect the F12 clearance warning ECU assembly connector.
Measure the voltage and resistance according to value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| F12-12 (CSSW) - F12-17 (GND1) | Y - W-B | back sonar or clearance sonar switch assembly power source signal | Engine switch on (IG), back sonar or clearance sonar switch assembly on | 11 to 14 V |
| Engine switch on (IG), back sonar or clearance sonar switch assembly off | Below 1 V | |||
| F12-15 (IG) - F12-17 (GND1) | G - W-B | IG power source signal | Engine switch on (IG) | 11 to 14 V |
| Engine switch off | Below 1 V | |||
| F12-17 (GND1) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
Reconnect the F12 clearance warning ECU assembly connector.
Measure the voltage and waveform according to value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
| F12-7 (CSB2) - F12-18 (CSG2) | R - GR | Rear sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | 7.2 to 8.8 V |
| Engine switch off | Below 1 V | |||
| F12-9 (LIN1) - F12-19 (CSG1) | LG - R | Front sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | Waveform 1 |
| F12-10 (BBZ) - F12-11 (EF) | G - L | No. 1 clearance warning buzzer signal | Buzzer not sounding | Below 1 V |
| Buzzer sounding | Waveform 2 | |||
| F12-21 (CSB1) - F12-9 (LIN1) | GR - LG | Front sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | 7.2 to 8.8 V |
| Engine switch off | Below 1 V | |||
| F12-24 (LIN2) - F12-18 (CSG2) | LG - GR | Rear sensor circuit power source | Engine switch on (IG), back sonar or clearance sonar switch assembly on | Waveform 1 |
Using an oscilloscope, check waveform 1.
| Item | Content |
| Terminal No. (Symbol) | F12-9 (LIN1) - F12-19 (CSG1) F12-24 (LIN2) - F12-18 (CSG2) |
| Tool Setting | 2 V/DIV., 1 msec./DIV. |
| Condition | Engine switch on (IG), back sonar or clearance sonar switch assembly on |
Using an oscilloscope, check waveform 2.
| Item | Content |
| Terminal No. (Symbol) | F12-10 (BBZ) - F12-11 (EF) |
| Tool Setting | 5 V/DIV., 1 msec./DIV. |
| Condition | Engine switch on (IG), shift lever moved to R |
- NOTICE:
- The waveform amplitude varies depending on the volume setting.