Intuitive Parking Assist System (Diagnostics - Introduction): Diagnosis Lexus LX J200

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedures to troubleshoot the intuitive parking assist system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. INSPECT BATTERY VOLTAGE Standard voltage 11 to 14 V If the voltage is below 11 V, replace or recharge the battery before proceeding. NEXT: Go to next step
3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> Go to CAN COMMUNICATION SYSTEM. Refer to «PRECAUTION»(ref-385222-S41286850992011021400000) A: Go to next step
4. CHECK FOR DTC Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385277-S13441709982011021400000) . Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385277-S13441709982011021400000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385277-S13441709982011021400000) . RESULT Result Proceed to No DTC is output A DTC is output B B --> Go to DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-385277-S11930057262011021400000) A: Go to next step
5. PROBLEM SYMPTOMS TABLE Refer to the Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE»(ref-385277-S15159353802011021400000) . RESULT Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> Go to step 7 A: Go to next step
6. OVERALL ANALYSIS AND TROUBLESHOOTING* Operation Check. Refer to «OPERATION CHECK»(ref-385277-S21307021362011021400000) . Terminals of ECU. Refer to «TERMINALS OF ECU»(ref-385277-S34216670552011021400000) . Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(ref-385277-S13400974432011021400000) . NEXT: Go to next step
7. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
8. CONFIRMATION TEST NEXT --> END

PROBLEM SYMPTOMS TABLE

HINT

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

GENERAL

SONAR FUNCTION

DISPLAY FUNCTION

*1: w/ Navigation System

*2: w/o Navigation System

BUZZER FUNCTION

INDICATOR FUNCTION

Scheme 35

Scheme 36

Scheme 37

1. CHECK PARKING ASSIST ECU Disconnect the F36 and F37 ECU 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 F36-6 (+B) - F36-4 (GND1) L - W-B Power source signal Always 11 to 14 V F36-1 (IG) - F36-4 (GND1) G - W-B IG power source signal Engine switch on (IG) 11 to 14 V F36-1 (IG) - F36-4 (GND1) G - W-B IG power source signal Engine switch off Below 1 V F36-14 (ACC) - F36-4 (GND1) GR - W-B ACC power source signal Engine switch on (ACC) 11 to 14 V F36-14 (ACC) - F36-4 (GND1) GR - W-B ACC power source signal Engine switch off Below 1 V F37-6 (CSSW) - F36-4 (GND1) Y - W-B Clearance sonar main switch power source signal Engine switch on (IG), clearance sonar main switch on 11 to 14 V F37-6 (CSSW) - F36-4 (GND1) Y - W-B Clearance sonar main switch power source signal Engine switch on (IG), clearance sonar main switch off Below 1 V F36-4 (GND1) - Body ground W-B - Body ground ECU ground Always Below 1 ohms Reconnect the F36 and F37 ECU connectors. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition F37-28 (BOR) - F37-29 (E2) R - GR Rear sensor circuit power source Engine switch on (IG), clearance sonar main switch on 7.2 to 8.8 V F37-28 (BOR) - F37-29 (E2) R - GR Rear sensor circuit power source Engine switch off Below 1 V F37-33 (SOF) - F37-32 (E1) LG - R Front sensor circuit power source Engine switch on (IG), clearance sonar main switch on Waveform 1 F37-25 (BBZ) - F36-4 (GND1) G - W-B No. 1 clearance warning buzzer signal Engine switch on (IG) 7.2 to 8.8 V F37-25 (BBZ) - F36-4 (GND1) G - W-B No. 1 clearance warning buzzer signal Engine switch off Below 1 V F37-9 (EF) - F36-4 (GND1) L - W-B No. 1 clearance warning buzzer signal Buzzer sounding Waveform 2 F37-31 (BOF) - F37-32 (E1) GR - R Front sensor circuit power source Engine switch off Below 1 V F37-31 (BOF) - F37-32 (E1) GR - R Front sensor circuit power source Engine switch on (IG), clearance sonar main switch on 7.2 to 8.8 V F37-30 (SOR) - F37-29 (E2) LG - GR Rear sensor circuit power source Engine switch on (IG), clearance sonar main switch on Waveform 1 Using an oscilloscope, check waveform 1. WAVEFORM 1 (REFERENCE) Item Content Terminal No. (Symbol) F37-33 (SOF) - F37-32 (E1) F37-30 (SOR) - F37-29 (E2) Tool Setting 2 V/DIV., 1 msec./DIV. Condition Engine switch on (IG), clearance sonar main switch on Using an oscilloscope, check waveform 2. WAVEFORM 2 (REFERENCE) Item Content Terminal No. (Symbol) F37-9 (EF) - F36-4 (GND1) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine switch on (IG), shift lever in R

DTC CHECK / CLEAR

1. CHECK DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Intuitive P/A / Trouble Codes. Read the DTCs.
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Intuitive P/A / Trouble Codes. Clear the DTCs.

DATA LIST / ACTIVE TEST

1. DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time. NOTE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Intuitive P/A / Data List. According to the display on the Techstream, read the Data List. INTUITIVE P/A Tester Display Measurement Item/Range Normal Condition Diagnostic Note Main Switch Clearance sonar main switch/OFF or ON OFF: Clearance sonar main switch off ON: Clearance sonar main switch on - Clearance Sonar ECU Type Type of clearance warning ECU/Normal or Steer Normal: Normal clearance sonar type Steer: Steering sensing type - Rr Sensor Onset Range Buzzer activation range (for rear sensors)/Narrow or Wide Narrow: Buzzer activation range narrow Wide: Buzzer activation range wide - Keep Sense Buzzer Buzzer operation/Not Avail or Avail Not Avail: Buzzer sounds continuously Avail: Buzzer stops When the distance between the vehicle and an obstacle does not change for more than 3 seconds. Fr & Rr Buzzer Volume Buzzer volume setting/L, M1, M2, M3 or H L: Buzzer volume low M1: Buzzer volume medium low M2: Buzzer volume medium M3: Buzzer volume medium high H: Buzzer volume high - Sensor Condition N Sensor operation/Not Avail or Avail Not Avail: Sensor does not operate Avail: Sensor operates When the shift lever is in N. Approach Display OFF Display operation/Not Avail or Avail Not Avail: Display does not display Avail: Display displays When moving away from a previously detected obstacle. Display Mode Display mode setting/All or Updisp All: Display displays all sensors Updisp: Display does not display When the intuitive parking assist system is normal. Reverse Range Front Sensor Operation setting for vehicle front sensors (front center, front corner, front side)/F or F Stop F: All front sensors operate F Stop: All front sensors stop When the shift lever is in R. Non P/R Range Rear Sensor Operation setting for vehicle rear sensors (rear center, rear corner)/R, Rcrn or R Stop R: All rear sensors operate Rcrn: Rear corner sensors operate R Stop: All rear sensors stop When the shift lever is not in P or R. Fr Left Sensor Front corner sensor LH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Fr Right Sensor Front corner sensor RH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Rr Left Sensor Rear corner sensor LH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Rr Left Center Sensor Rear center sensor LH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Rr Right Center Sensor Rear center sensor RH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Rr Right Sensor Rear corner sensor RH information/Undetect, Close R, Mid G, Mid L G, Long G, Mid Y, Mid L Y, Long Y, Freeze, Open or Blink Undetect: Not detected Close R: Detected (Close-range) [Red] Mid G: Detected (Medium-range) [Green] Mid L G: Detected (Long-range) [Green] Long G: Detected (Maximum long-range) [Green] Mid Y: Detected (Medium-range) [Yellow] Mid L Y: Detected (Long-range) [Yellow] Long Y: Detected (Maximum long-range) [Yellow] Freeze: Sensor frozen Open: Open in sensor Blink: All displays blinking - Parking Signal Parking signal/OFF or ON OFF: Shift lever not in P ON: Shift lever in P - Reverse Signal Reverse signal/OFF or ON OFF: Shift lever not in R ON: Shift lever in R - Vehicle Speed Info Vehicle speed signal/SN STOP or SN WORK SN STOP: Vehicle speed 13 km/h (8 mph) or more SN WORK: Vehicle speed less than 9 km/h (5.6 mph) - Sonar Detection Sonar detection condition/STOP or WORK STOP: Sonar detection not operating WORK: Sonar detection operating - Clearance Sonar ECU ECU information/Abnormal or Normal Abnormal: ECU not normal Normal: ECU normal - Rr Right Freezed History Rear corner sensor RH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - Rr Right Center Freezed History Rear center sensor RH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - Rr Left Center Freezed History Rear center sensor LH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - Rr Left Freezed History Rear corner sensor LH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - Fr Right Freezed History Front corner sensor RH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - Fr Left Freezed History Front corner sensor LH frozen history/Not Rec or Recorded Not Rec: No record history Recorded: Record history - # Codes Number of stored trouble codes/min.: 0, max.: 255 Number of DTCs will be displayed
2. ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests. Connect the Techstream to the DLC3. Turn the engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Intuitive P/A / Active Test. According to the display on the Techstream, perform the Active Test. INTUITIVE P/A Tester Display Test Part Control Range Diagnostic Note Buzzer No. 1 clearance warning buzzer Operate or Stop

DIAGNOSTIC TROUBLE CODE CHART

HINT

If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See" below.

INTUITIVE PARKING ASSIST SYSTEM