Night View System (Diagnostics - Introduction): Diagnosis Lexus GS IV

HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]

HINT

*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS NEXT: Go to next step
3. INSPECT AUXILIARY BATTERY VOLTAGE Measure the auxiliary battery voltage with the power switch off. Standard voltage 11 to 14 V HINT: If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step. NEXT: Go to next step
4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Refer to «PRECAUTION [03/2012 - ]»(ref-600588-S03798215262014022400000) . RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]»(ref-600588-S38298476802014022400000) A: Go to next step
5. CHECK FOR DTC* Clear the DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600668-S33757900182014022400000) . Recheck for DTCs. Refer to «DTC CHECK / CLEAR [03/2012 - ]»(ref-600668-S33757900182014022400000) . Attempt to reproduce malfunction symptoms according to the recorded DTCs and check if the DTCs are stored again. RESULT Result Proceed to DTC is not output A DTC is output B B --> GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]»(ref-600668-S16612647242014022400000) A: Go to next step
6. PROBLEM SYMPTOMS TABLE Refer to Problem Symptoms Table. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-600668-S05013842572014022400000) . RESULT Result Proceed to Fault is not listed in problem symptoms table A Fault is listed in problem symptoms table B B --> ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE A: Go to next step
7. OVERALL ANALYSIS AND TROUBLESHOOTING* Check Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-600668-S09858237842014022400000) . Check Terminals of ECU. Refer to «TERMINALS OF ECU [03/2012 - ]»(ref-600668-S08098376762014022400000) . NEXT: Go to next step
8. REPAIR OR REPLACEMENT NOTE: When the No. 1 night view ECU or night view camera is replaced, perform night view camera adjustment. Refer to «ADJUSTMENT [03/2012 - ]»(ref-600443-S28354879822014022400000) . NEXT: Go to next step
9. CONFIRMATION TEST NEXT --> END

PROBLEM SYMPTOMS TABLE [03/2012 - ]

HINT

1. 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.
2. Inspect the fuses and relays related to this system before inspecting the suspected areas below.

NIGHT VIEW SYSTEM

Scheme 287

Scheme 288

Scheme 289

1. CHECK NO. 1 NIGHT VIEW ECU Disconnect the T34 No. 1 night view ECU connector. Measure the resistance and voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition T34-6 (RE) - Body ground W-B - Body ground Ground Always Below 1 ohms T34-10 (IG) - Body ground GR - Body ground IG power supply Power switch off Below 1 V Power switch on (IG) 11 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side. Reconnect the T34 No. 1 night view ECU connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition T34-3 (IRFR) - T34-6 (RE) P - W-B Right side near-infrared ray emitter monitoring signal Night view system operating (forcibly operated using Active Test) Pulse generation (See waveform 1 in step 1 ) T34-12 (IRFL) - T34-6 (RE) L - W-B Left side near-infrared ray emitter monitoring signal Night view system operating (forcibly operated using Active Test) Pulse generation (See waveform 1 step 1 ) T34-13 (NVSW) - T34-6 (RE) W - W-B Night view switch signal Power switch on (IG), night view switch on Below 1 V Power switch on (IG), night view switch off 4.8 to 5.2 V T34-15 (IRLY) - T34-6 (RE) LG - W-B Near-infrared ray emitter operation signal Night view system operating (forcibly operated using Active Test) 1.76 V or more T34-17 (CCD+) - T34-20 (CCD-) W - G Night view camera power supply Night view system operating (forcibly operated using Active Test) 5.7 to 6.5 V T34-18 (NTSC) - T34-6 (RE) B - W-B Night view camera NTSC signal Night view system operating and image output to accessory meter Pulse generation (See waveform 2 in step 2 ) T34-19 (CLTS) - T34-6 (RE) R - W-B Night view camera control signal Techstream in use (camera adjustment mode) Pulse generation T34-21 (SG) - T34-6 (RE) Shielded - W-B Night view camera shielded GND Always Below 1 V Waveform 1 Item Content Terminal No. (Symbol) T34-3 (IRFR) - T34-6 (RE) T34-12 (IRFL) - T34-6 (RE) Tool setting 5 V/DIV., 40 ms./DIV. Condition Night view system operating (forcibly operated using Active Test) Waveform 2 Item Content Terminal No. (Symbol) T34-18 (NTSC) - T34-6 (RE) Tool setting 200 mV/DIV., 10 μs./DIV. Condition Night view system operating and image output to accessory meter

DTC CHECK / CLEAR [03/2012 - ]

1. CHECK DTC Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Night View / Trouble Codes. Check for DTCs.
2. CLEAR DTC Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Night View / Trouble Codes. Clear the DTCs.

DATA LIST / ACTIVE TEST [03/2012 - ]

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 power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / (desired system) / Data List / All Data. According to the display on the Techstream, read the Data List. NIGHT VIEW Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Current vehicle speed / 0 to 255 km/h 0 km/h: Vehicle stationary Approximately same as vehicle speed indicated in combination meter - Night View Main Switch Status of night view switch / ON or OFF ON: Night view switch on OFF: Night view switch off "ON" is output while the night view switch is being pressed. Low Beam Lighting Condition Low beam illumination malfunction status / Normal or Abnoml Normal: No malfunction detected Abnoml: Malfunction detected - Near Infrared Camera Height Height of night view camera / 0 to 3.99 m Height of night view camera at lowest value: 0 m Height of night view camera at highest value: 3.99 m - Near Infrared Camera Pitch Angle Pitch angle of night view camera (positive values indicate downward inclination) / -3 to 4.99 deg Pitch angle of night view camera at lowest value: -3 deg Pitch angle of night view camera at highest value: 4.99 deg - Steering Wheel Location Steering wheel location / No Segm, Left, Right or Unknown No Segm: No steering wheel location classification Left: Steering wheel located on left side Right: Steering wheel located on right side Unknown: Steering wheel location unknown - Recognition ECU Presence Presence of object recognition ECU / Inval or Valid Inval: Vehicle equipped with lane-keeping assist system Valid: Vehicle not equipped with lane-keeping assist - Type Of Low Beam Type of low beam headlights / Judging, LED, HID or Uncertainty Judging: Currently determining low beam type LED: LED type low beam headlights HID: HID type low beam headlights Uncertainty: Low beam headlight type unknown - Initial Setting Status Initialization completion status / Comp or Incomp Comp: Initialization completed Incomp: Initialization not completed - Country# (Night View) Destination information / JPN, NA, EURO, GEN, etc, TW, CN, TH, Mid East, Korea or Unknown JPN: Destination Japan NA: Destination North America EURO: Destination Europe GEN: Destination Australia etc: Destination other countries TW: Destination Taiwan CN: Destination China TH: Destination Thailand Mid East: Destination Middle East Korea: Destination South Korea Unknown: Destination unknown - The Number of DTCs Number of trouble codes / 0 to 255 0 - MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG SW Power switch on (IG) signal / ON or OFF ON: Power switch on (IG) OFF: Power switch off "OFF" is also displayed for this item when the power switch is on (ACC). Dimmer SW Headlight dimmer switch high position signal / ON or OFF ON: Headlight dimmer switch in high or high flash position OFF: Headlight dimmer switch in low position - Passing Light SW Headlight dimmer switch high flash position (pass) signal / ON or OFF ON: Headlight dimmer switch in high flash position OFF: Headlight dimmer switch not in high flash position - Auto Light SW Headlight dimmer switch AUTO position signal / ON or OFF ON: Headlight dimmer switch in AUTO position OFF: Headlight dimmer switch not in AUTO position - Head Light SW (Head) Headlight dimmer switch head position signal / ON or OFF ON: Headlight dimmer switch in head position OFF: Headlight dimmer switch not in head position - Head Light SW (Tail) Headlight dimmer switch tail position signal / ON or OFF ON: Headlight dimmer switch in tail or head position OFF: Headlight dimmer switch in neither tail nor head position - Illumination Rate Info Illumination rate information / 0 ms. to 2162.65 ms. Value output according to ambient light levels
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 power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Night View / Active Test. According to the display on the Techstream, perform the Active Test. NIGHT VIEW Tester Display Test Part Control Range Diagnostic Note Display Warning Displays advice OFF/Lo OFF/Daytime - IR Floodlight Turns on near-infrared ray emitter ON/OFF - Night View System Operation Forces night view system to operate ON/OFF Perform the Active Test with the low beam headlight on.

DIAGNOSTIC TROUBLE CODE CHART [03/2012 - ]

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.

NIGHT VIEW SYSTEM

See also:
• DIAGNOSIS SYSTEM [03/2012 - ]