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Vehicle Proximity Notification System (Diagnostics & Circuit Tests) (Base): Other Toyota Prius Plug-in

Collision/avoidance 2 illustrations ~758 words

PRECAUTION

  1. PRECAUTIONS FOR VEHICLE PROXIMITY NOTIFICATION SYSTEM In the following cases, the volume or tone of the sound might change: If the vehicle is parked in a very hot or cold environment for an extended time (function will return to normal after time passes) If high pressure water is applied directly to the speaker from the bottom of the vehicle If the front of the speaker is blocked by mud, snow, ice etc. If the entire speaker freezes In the following cases, it may be difficult to hear the sound from the speaker: If the environment around the vehicle is very noisy (in a busy intersection or when an emergency vehicle is approaching) If the listener is behind the vehicle. (Compared to a situation such as when a pedestrian is in front of the vehicle, the sound volume will seem to be lower when the car is reversing. This occurs because the speaker is installed facing the front of the vehicle.)

Scheme 18

Scheme 18: ILLUSTRATION
Scheme 18: ILLUSTRATION

Scheme 19

Scheme 19: SYSTEM DIAGRAM
Scheme 19: SYSTEM DIAGRAM

PROCEDURE

  1. CHECK ELECTRONIC SHIFT LEVER SYSTEM Check that the transmission shift main switch indicator illuminates when the transmission shift main switch (P position switch) is operated. OK Indicator illuminates in accordance with switch operation NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - TRANSMISSION CONTROL ECU ASSEMBLY) Disconnect the L140 vehicle approaching speaker controller connector. Disconnect the A23 transmission control ECU assembly connector. Measure the resistance according to the value (s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L140-11 (SFTP) - A23-20 (IND) Always Below 1 ohms L140-11 (SFTP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-551655-S21008382472013051500000)
  4. GO TO ELECTRONIC SHIFT LEVER SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-551548-S33161058922013051500000)
  1. CHECK STOP LIGHT (OPERATION) Confirm that the stop lights illuminate correctly. OK Stop light operation is normal NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - STOP LIGHT CONTROL ECU ASSEMBLY) Disconnect the L140 vehicle approaching speaker controller connector. Disconnect the A28 stop light control ECU assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L140-2 (STP) - A28-1 (OUT) Always Below 1 ohms L140-2 (STP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-551655-S21008382472013051500000)
  4. GO TO LIGHTING SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-551401-S32115907172013051500000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Combination Meter / Data List. Read the display on the Techstream. COMBINATION METER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Oil Pressure Switch Oil pressure switch/OFF or ON OFF: Engine starts - ON: Engine does not start OK Normal conditions listed above are displayed. NG --> See step 4 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - ENGINE OIL PRESSURE SWITCH ASSEMBLY) Disconnect the L140 vehicle approaching speaker controller connector. Disconnect the D26 engine oil pressure switch assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L140-12 (OPSW) - D26-1 Always Below 1 ohms L140-12 (OPSW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-551655-S21008382472013051500000)
  4. GO TO METER / GAUGE SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-551543-S42568367542013051500000)
  1. CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - IG1 NO. 1 RELAY) Disconnect the L140 vehicle approaching speaker controller connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L140-1 (IG) - Body ground Power switch on (IG) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L140-7 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-551655-S21008382472013051500000)

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