Lighting System [interior] [diagnostics & Circuit Tests] Toyota Prius V I

PRECAUTION

Note. When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system after the cable is reconnected. System Name See Procedure Advance Parking Guidance System Refer to INITIALIZATION Power Door Lock Control System

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SYSTEM DESCRIPTION

1. ILLUMINATED ENTRY SYSTEM The illuminated entry system has the following control functions: Control Outline Lights that Operate Actuation Area-linked When a registered key enters any actuation area around the doors, the lights that operate turn on. Power Switch Illumination Front Interior Lights Rear Interior Light When a registered key leaves all of actuation areas around the doors, the lights that operate turn off. Power Switch Illumination Front Interior Lights Rear Interior Light Door Lock/Unlock-linked When any door is unlocked, the lights that operate turn on. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights When all doors are locked, the lights that operate turn off. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights Door Open/Close-linked When any door is opened, the lights that operate turn on. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights When all doors are closed, the lights that operate turn off. Power Switch-linked When the power switch is turned from on (ACC or IG) to off, the lights that operate turn on. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights When the power switch is turned from off to on (ACC or IG) the light that operate turn off. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights Shift Position-linked When the power switch is on (READY) and with park (P) selected, the shift lever is moved to select another shift state, the light that operate dim. Footwell Lights Delay When approximately 15 seconds elapse after any of the following conditions are met, the lights that operate turn off: An actuation area-linked function is used. The door unlock-linked function is active. Any doors is opened and then all doors are closed when the power switch is off. Power Switch Illumination Front Interior Lights Rear Interior Light Footwell Lights Battery Saving When no changes occur in the condition of the doors for 20 minutes and a key is not in the actuation area, these lights turn off. Power Switch Illumination Front Interior Lights Rear Interior Light When no changes occur in the condition of the doors for 20 minutes, the footwell lights turn off. Footwell Lights

HOW TO PROCEED WITH TROUBLESHOOTING

HINT

1. Use the following procedure to troubleshoot the lighting system.
2. *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK 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 If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step. NEXT: Go to next step
4. INSPECT CAN COMMUNICATION SYSTEM* Use the Techstream to check if the CAN communication system is functioning normally. Result Result Proceed to CAN communication system DTC is not output. A CAN communication system DTC is output. B B --> GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(/toyota/prius-v/i-2011-2014/remont/communication-devices/#can-communication-system-diagnostics-introduction) A: Go to next step
5. PROBLEM SYMPTOMS TABLE 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* Data List / Active Test. Refer to «DATA LIST / ACTIVE TEST»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__data-list-active-test) Terminals of ECU. Refer to «TERMINALS OF ECU»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests) NEXT: Go to next step
7. ADJUST, REPAIR OR REPLACE NEXT: Go to next step
8. CONFIRMATION TEST NEXT --> END

OPERATION CHECK

1. INSPECT INTERIOR LIGHT CONTROL OPERATION NOTE: When troubleshooting a function, first make sure that the function is set to the default setting. HINT: The interior light control illuminates the lights below. Power Switch Illumination Front Interior Lights Rear Interior Light The operation and operation conditions of this control are described below. Operation Operation Condition Fade in and illuminate constantly Any door is opened when all doors are closed. Illuminate for 15 seconds, and then fade out When any of the following conditions is met, the lights illuminate for 15 seconds, and then fade out. The key enters any actuation area around the doors when the power switch is off and all doors are closed*1. Any door is unlocked when the power switch is off, all doors are closed and locked. The power switch is turned from on (ACC) to off when all doors are closed. All doors are closed when any door is opened and the power switch is off. Fade out immediately When any of the following conditions is met, the lights fade out immediately. The power switch is turned from off to on (ACC) when all doors are closed. All doors are locked when the power switch is off, all doors are closed and any door is unlocked. All doors are locked again when all doors are closed and locked. Battery saver When no changes occur in the condition of the doors for 20 minutes and a key is not in the actuation area, these lights turn off. HINT: *1: When the lights are on, if the key leaves all of actuation areas around the doors, after approximately 3 seconds, the lights fade out.
2. INSPECT FOOTWELL LIGHT CONTROL OPERATION NOTE: When troubleshooting a function, first make sure that the function is set to the default setting. HINT: The footwell light control illuminates the lights below. Footwell light LH Footwell light RH The operation and operation conditions of this control are described below. Operation Operation Condition Fade in and illuminate constantly When any of the following conditions is met, the footwell light LH and footwell light RH fade in. Any door is opened when all door are closed. The power switch is turned from off to on (IG). Illuminate for 15 seconds, and then fade out When any of the following conditions is met, the footwell light LH and foot light RH illuminate for 15 seconds and then fade out. Any door is unlocked when the power switch is off, all doors are closed and all doors are locked. The power switch is turned from on (IG) to off when all doors are closed. All doors are closed when any door is opened and the power switch is off. Fade out immediately All doors are locked when the power switch is off, all doors are closed and any door is unlocked. Dim When the power switch is on (READY) and with park (P) selected, the shift lever is moved to select another shift state, the lights that operate dim. Battery saver When no changes occur in the condition of the doors for 20 minutes, the footwell lights turn off.

CUSTOMIZE PARAMETERS

1. CUSTOMIZE LIGHTING SYSTEM (INT) Customizing using the Techstream HINT: The following items can be customized. NOTE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, first make sure that the function is set to the default setting. Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Customize Setting / Illuminated Entry. Select the setting by referring to the table below. ILLUMINATED ENTRY Tester Display Default Content Setting Relevant ECU Lighting Time 15 s Changes the lighting time after closing all of the doors. (It will fade out immediately in case of turning the power switch from off to on (ACC or IG).) 15 s, 7.5 s or 30 s Main body ECU (Multiplex network body ECU) I/L when ACC OFF ON Lights up power switch illumination, front interior lights and rear interior light when the power switch is turned from on (ACC or IG) to off. OFF or ON I/L ON W/Door Key Unlock ON Lights up power switch illumination, front interior lights, rear interior light and footwell lights when doors are unlocked using a mechanical key or door control transmitter. OFF or ON Inside Foot Light*1 ON ON/OFF of footwell light control function. OFF or ON Light Control*1 ON Dims (ON setting) or turns off (OFF setting) the footwell lights under the following conditions: Power switch on (READY), shift state other than park (P) has been selected, and all doors closed. OFF or ON Room Light when Aprchd ON Lights up the power switch illumination, front interior lights and rear interior light when a key enters any actuation area around the doors. OFF or ON Interior Light Control ON Function to change the interior light and footwell light control. OFF or ON *1: w/ Footwell Light Customizing with the Multi-display (w/ Navigation System (for Navigation Receiver Type)) Turn the power switch on (IG). Enter the following menus: Setup / Vehicle / Vehicle Customization / Light Settings Select the setting by referring to the table below Display Default Content Setting Relevant ECU Interior Lights Off Time 15 sec. Changes the lighting time after closing all of the doors. (It will fade out immediately in case of turning the power switch from off to on (ACC or IG).) Off, 7.5 sec., 15 sec., or 30 sec. Main body ECU (Multiplex network body ECU)

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.

ILLUMINATED ENTRY SYSTEM (INTERIOR LIGHT CONTROL)

ILLUMINATED ENTRY SYSTEM (FOOTWELL LIGHT CONTROL) (W/ FOOTWELL LIGHT)

BATTERY SAVING CONTROL

PERSONAL LIGHT

REAR INTERIOR LIGHT

VANITY LIGHT

GLOVE BOX LIGHT

COURTESY LIGHT

LUGGAGE COMPARTMENT LIGHT

INSTRUMENT PANEL ILLUMINATION

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1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (w/ LED Headlight or Glass Roof) Disconnect the 2A, 2B, 2C, 2E and L8 instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2A-43 - Body ground G - Body ground ACC power supply Power switch on (ACC) 11 to 14 V Power switch off Below 1 V 2B-25 - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V Power switch off Below 1 V 2C-18 - Body ground Y - Body ground Auxiliary battery power supply Always 11 to 14 V 2E-1 - Body ground W - Body ground Auxiliary battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Measure the resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2B-4 - Body ground W-B - Body ground Ground Always Below 1 ohms 2B-6 - Body ground W-B - Body ground Ground Always Below 1 ohms L8-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the 2A, 2B, 2C, 2E and L8 instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors. Measure the voltage and check for pulses according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2A-52 - Body ground P - Body ground Interior lights drive output Interior lights off 11 to 14 V Interior lights on Below 1 V 2B-13 - Body ground Y - Body ground Courtesy light (LH) drive output Courtesy light (LH) off 11 to 14 V Courtesy light (LH) on Below 1 V 2B-17 - Body ground*1 Y - Body ground Driver footwell light drive output Driver footwell light off 11 to 14 V Driver footwell light on Below 1 V 2B-18 - Body ground*1 L - Body ground Front passenger footwell light drive output Front passenger footwell light off 11 to 14 V Front passenger footwell light on Below 1 V 2B-29 - Body ground GR - Body ground Rear door unlock detection switch RH input Rear door RH locked Pulse generation Rear door RH unlocked Below 1 V 2B-31 - Body ground L - Body ground Courtesy light (RH) drive output Courtesy light (RH) off 11 to 14 V Courtesy light (RH) on Below 1 V 2D-25 - Body ground GR - Body ground Rear door unlock detection switch LH input Rear door LH locked Pulse generation Rear door LH unlocked Below 1 V 2D-35 - Body ground Y - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V Front door LH closed 11 to 14 V 2D-36 - Body ground BR - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V Front door RH closed 11 to 14 V L7-6 (LRCY) - Body ground G - Body ground Rear door courtesy light switch RH or LH input Rear door RH or LH open Below 1 V Rear door RH and LH closed Pulse generation L7-7 (LSFL) - Body ground GR - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation Front door LH unlocked Below 1 V L7-18 (LSFR) - Body ground LG - Body ground Front door unlock detection RH switch input Front door RH locked Pulse generation Front door RH unlocked Below 1 V L7-19 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door open Below 1 V Back door closed and luggage compartment light switch on 11 to 14 V Back door closed and luggage compartment light switch off Pulse generation *1: w/ Footwell Light If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.
2. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (w/o LED Headlight or Glass Roof) Disconnect the 2A, 2B, 2C and 2E instrument panel junction block assembly connectors. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2A-43 - Body ground G - Body ground ACC power supply Power switch on (ACC) 11 to 14 V Power switch off Below 1 V 2B-25 - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V Power switch off Below 1 V 2C-18 - Body ground Y - Body ground Auxiliary battery power supply Always 11 to 14 V 2E-1 - Body ground W - Body ground Auxiliary battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Measure the resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2B-4 - Body ground W-B - Body ground Ground Always Below 1 ohms 2B-6 - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the 2A, 2B, 2C and 2E instrument panel junction block assembly connectors. Measure the voltage and check for pulses according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2A-52 - Body ground P - Body ground Interior lights drive output Interior lights off 11 to 14 V Interior lights on Below 1 V 2B-13 - Body ground Y - Body ground Courtesy light (LH) drive output Courtesy light (LH) off 11 to 14 V Courtesy light (LH) on Below 1 V 2B-17 - Body ground*1 Y - Body ground Driver footwell light drive output Driver footwell light off 11 to 14 V Driver footwell light on Below 1 V 2B-18 - Body ground*1 L - Body ground Front passenger footwell light drive output Front passenger footwell light off 11 to 14 V Front passenger footwell light on Below 1 V 2B-29 - Body ground GR - Body ground Rear door unlock detection switch RH input Rear door RH locked Pulse generation Rear door RH unlocked Below 1 V 2B-31 - Body ground L - Body ground Courtesy light (RH) drive output Courtesy light (RH) off 11 to 14 V Courtesy light (RH) on Below 1 V 2D-25 - Body ground GR - Body ground Rear door unlock detection switch LH input Rear door LH locked Pulse generation Rear door LH unlocked Below 1 V 2D-35 - Body ground Y - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V Front door LH closed 11 to 14 V 2D-36 - Body ground BR - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V Front door RH closed 11 to 14 V L7-6 (LRCY) - Body ground G - Body ground Rear door courtesy light switch RH or LH input Rear door RH or LH open Below 1 V Rear door RH and LH closed Pulse generation L7-7 (LSFL) - Body ground GR - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation Front door LH unlocked Below 1 V L7-18 (LSFR) - Body ground LG - Body ground Front door unlock detection RH switch input Front door RH locked Pulse generation Front door RH unlocked Below 1 V L7-19 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door open Below 1 V Back door closed and luggage compartment light switch on 11 to 14 V Back door closed and luggage compartment light switch off Pulse generation *1: w/ Footwell Light If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.
3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the L62 certification ECU (smart key ECU assembly) connector. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L62-1 (+B) - Body ground B - Body ground Auxiliary battery power supply Always 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness. Measure the resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L62-15 (E) - Body ground W-B - Body ground Ground Always Below 1 ohms If the result is not as specified, there may be a malfunction in the wire harness. Reconnect the L62 certification ECU (smart key ECU assembly) connector. Measure the voltage and check for pulses according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L62-11 (SWIL) - Body ground G - Body ground Power switch illumination drive output Power switch illumination on 11 to 14 V or pulse generation Power switch illumination off Below 1 V If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

DIAGNOSIS SYSTEM

1. DESCRIPTION Lighting system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
2. CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION»(/toyota/prius-v/i-2011-2014/remont/hoistjack/#introduction) .
3. INSPECT AUXILIARY BATTERY VOLTAGE Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary battery.

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 following table, 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 / Main Body / Data List. Read the Data List according to the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note ACC SW Power switch ACC signal/ON or OFF ON: Power switch on (ACC) OFF: Power switch off - IG SW Power switch IG signal/ON or OFF ON: Power switch on (IG) OFF: Power switch off - RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF ON: Rear door LH or RH open OFF: Rear door LH and RH closed - RL Door Courtesy SW Rear door courtesy light switch LH signal/ON or OFF ON: Rear door LH or RH open OFF: Rear door LH and RH closed - Back Door Courtesy SW Back door courtesy switch signal/ON or OFF ON: Back door open OFF: Back door closed - FR Door Lock Pos Front door unlock detection switch RH signal/ON or OFF ON: Front door RH unlocked OFF: Front door RH locked - FR Door Courtesy Front door courtesy light switch RH signal/ON or OFF ON: Front door RH closed OFF: Front door RH open - FL Door Lock Pos Front door unlock detection switch LH signal/ON or OFF ON: Front door LH unlocked OFF: Front door LH locked - FL Door Courtesy Front door courtesy light switch LH signal/ON or OFF ON: Front door LH closed OFF: Front door LH open - RR-Door Lock Pos SW Rear door unlock detection switch RH signal/ON or OFF ON: Rear door LH or RH unlocked OFF: Rear door LH and RH locked - RL-Door Lock Pos SW Rear door unlock detection switch LH signal/ON or OFF ON: Rear door LH or RH unlocked OFF: Rear door LH and RH locked
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 / Main Body / Active Test. Perform the Active Test according to the display on the Techstream. MAIN BODY Tester Display Test Part Control Range Diagnostic Note Illuminated Entry System Interior lights ON/OFF Interior light door switch on and all doors closed Fr Foot Light Footwell lights ON/OFF Precondition for using the Active Test to turn lights on and off: Power switch is turned off just before performing the Active Test. Preconditions for using the Active Test to check dimmer controlled illumination: Power switch is on (READY). A shift state other than park (P) has been selected.

DESCRIPTION

This circuit detects the power switch on (IG) or off condition, and sends it to the main body ECU (multiplex network body ECU).

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INSPECTION PROCEDURE

Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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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 / Main Body / Data List. Read the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note IG SW Power switch IG signal/ON or OFF ON: Power switch on (IG) OFF: Power switch off - OK Normal conditions listed above are displayed. NG --> See step 2 OK --> See step 4
2. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the 2E and 2B instrument panel junction block assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2E-1 - Body ground Always 11 to 14 V 2B-25 - 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 2B-6 - Body ground Always Below 1 ohms 2B-4 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Instrument panel junction block assembly) - - Standard Resistance Tester Connection Condition Specified Condition 2E-1 - MB-32 (IG) Always 10 kohms or higher 2E-1 - MB-32 (IG) Auxiliary battery positive (+) --> 2B-25 Auxiliary battery negative (-) --> 2B-6, 2B-4 Below 1 ohms NG --> See step 5 OK --> See step 6
4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
5. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
6. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

This circuit detects the power switch on (ACC) or off condition, and sends it to the main body ECU (multiplex network body ECU).

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Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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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 / Main Body / Data List. Read the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note ACC SW Power switch ACC signal / ON or OFF ON: Power switch on (ACC) OFF: Power switch off - OK Normal conditions listed above are displayed. NG --> See step 2 OK --> See step 4
2. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the 2A, 2E and 2B instrument panel junction block assembly connectors. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2E-1 - Body ground Always 11 to 14 V 2A-43 - Body ground Power switch on (ACC) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-6 - Body ground Always Below 1 ohms 2B-4 - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. TEXT IN ILLUSTRATION *a Component without harness connected (Instrument panel junction block assembly) - - Standard Resistance Tester Connection Condition Specified Condition 2E-1 - MB-29 (ACC) Always 10 kohms or higher 2E-1 - MB-29 (ACC) Auxiliary battery positive --> 2A-43 Auxiliary battery negative --> 2B-6, 2B-4 Below 1 ohms NG --> See step 5 OK --> See step 6
4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
5. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
6. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

The main body ECU (multiplex network body ECU) detects the condition of each door courtesy light switch.

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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 / Main Body / Data List. Read the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF ON: Rear door LH or RH open OFF: Rear door LH and RH closed - RL Door Courtesy SW Rear door courtesy light switch LH signal/ON or OFF ON: Rear door LH or RH open OFF: Rear door LH and RH closed - Back Door Courtesy SW Back door courtesy switch signal/ON or OFF ON: Back door open OFF: Back door closed - FR Door Courtesy Front door courtesy light switch RH signal/ON or OFF ON: Front door RH closed OFF: Front door RH open - FL Door Courtesy Front door courtesy light switch LH signal/ON or OFF ON: Front door LH closed OFF: Front door LH open - OK Normal conditions listed above are displayed. Result Result Proceed to OK A Front door courtesy light switch LH or RH does not operate B Rear door courtesy light switch LH or RH does not operate C Back door courtesy switch does not operate D B --> See step 2 C --> See step 5 D --> See step 7 A --> See step 12
2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH) Remove the front door courtesy light switch assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - Switch body Pushed 10 kohms or higher 1 - Switch body Not pushed Below 1 ohms TEXT IN ILLUSTRATION *1 Switch Body *a Component without harness connected (Front Door Courtesy Light Switch Assembly) NG --> See step 9 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY) for Front LH Disconnect the 2D instrument panel junction block assembly connector. Disconnect the R6 front door courtesy light switch assembly LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-35 - R6-1 Always Below 1 ohms 2D-35 - Body ground Always 10 kohms or higher for Front RH Disconnect the 2D instrument panel junction block assembly connector. Disconnect the S5 front door courtesy light switch assembly RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-36 - S5-1 Always Below 1 ohms 2D-36 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for Front LH Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-35 - MB-2 (FLCY) Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) for Front RH Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-36 - MB-4 (FRCY) Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 14 OK --> See step 13
5. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH) Remove the rear door courtesy light switch assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 - Switch body Pushed 10 kohms or higher 1 - Switch body Not pushed Below 1 ohms TEXT IN ILLUSTRATION *1 Switch Body *a Component without harness connected (Rear Door Courtesy Light Switch Assembly) NG --> See step 10 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - REAR COURTESY LIGHT SWITCH ASSEMBLY) for Rear LH Disconnect the L7 main body ECU (multiplex network body ECU) connector. Disconnect the R13 rear door courtesy light switch assembly LH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L7-6 (LRCY) - R13-1 Always Below 1 ohms L7-6 (LRCY) - Body ground Always 10 kohms or higher for Rear RH Disconnect the L7 main body ECU (multiplex network body ECU) connector. Disconnect the S10 rear door courtesy light switch assembly RH connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L7-6 (LRCY) - S10-1 Always Below 1 ohms L7-6 (LRCY) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
7. INSPECT BACK DOOR LOCK ASSEMBLY Remove the back door lock assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Switch Condition Specified Condition 1 (ACT-) - 3 (D+) Locked 10 kohms or higher 1 (ACT-) - 3 (D+) Unlocked Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Back Door Lock Assembly) *b Locked *c Unlocked NG --> See step 11 OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Disconnect the L7 main body ECU (multiplex network body ECU) connector. Disconnect the V11 back door lock assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L7-19 (BCTY) - V11-3 (D+) Always Below 1 ohms L7-19 (BCTY) - Body ground Always 10 kohms or higher V11-1 (ACT-) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 13
9. REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information)
10. REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information)
11. REPLACE BACK DOOR LOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information)
12. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
13. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
14. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

The main body ECU (multiplex network body ECU) controls the operation of the following lights

1. Map light assembly
2. No. 1 room light assembly

Scheme 22

Note. Inspect fuses for circuits related to this system before performing the following inspection procedure. Check that the light intensity of the light control rheostat is set to maximum.

Scheme 23

1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Active Test. Check that the lights operate. MAIN BODY Tester Display Test Part Control Range Diagnostic Note Illuminated Entry System Personal light and No. 1 room light assembly ON/OFF Interior light door switch on and all doors closed OK Each light fades in. NG --> See step 2 OK --> See step 7
2. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - MAP LIGHT ASSEMBLY) Disconnect the U3 map light assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition U3-11 (+B1) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT MAP LIGHT ASSEMBLY Remove the map light assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information) . Inspect the map light assembly. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information) . OK Map light assembly is normal. NG --> See step 9 OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the 2A instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition U3-6 (CTY) - 2A-52 Always Below 1 ohms U3-6 (CTY) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2A-52 - MB-1 (ILE) Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 8 OK --> See step 6
6. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
7. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
8. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
9. REPLACE MAP LIGHT ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-service-information)

The main body ECU (multiplex network ECU) controls the footwell lights.

Scheme 24

Note. Inspect fuses for circuits related to this system before performing the following inspection procedure. Check that the light intensity of the light control rheostat is set to maximum.

Scheme 25

1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body / Active Test. Check that the footwell lights come on. MAIN BODY Tester Display Test Part Control Range Diagnostic Note Fr Foot Light Footwell lights ON/OFF Precondition for using the Active Test to turn lights on and off: Power switch is turned off just before performing the Active Test. OK Footwell lights come on. NG --> See step 2 OK --> See step 6
2. CHECK HARNESS AND CONNECTOR (AUXILIARY BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) for Front LH Disconnect the No. 1 interior illumination light assembly LH (footwell light) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L1-2 (B) - Body ground Always 11 to 14 V for Front RH Disconnect the No. 1 interior illumination light assembly RH (footwell light) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition L77-2 (B) - Body ground Always 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FOOTWELL LIGHT - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) for Front LH Disconnect the 2B instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L1-1 (L) - 2B-18 Always Below 1 ohms L1-1 (L) - Body ground Always 10 kohms or higher for Front RH Disconnect the 2B instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L77-1 (L) - 2B-17 Always Below 1 ohms L77-1 (L) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-17 - MB-26 (FSPT) Always Below 1 ohms 2B-18 - MB-26 (FSPT) Always Below 1 ohms TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 7 OK --> See step 5
5. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
7. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)

The illuminated entry system controls the power switch illumination.

Scheme 26

Scheme 27

1. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Smart Key / Active Test. Check that the illumination operates. MAIN BODY Tester Display Test Part Control Range Diagnostic Note Illuminated Entry System Power switch illumination ON/OFF Interior light door switch on and all doors closed OK Power switch illumination comes on. NG --> See step 2 OK --> See step 5
2. INSPECT POWER SWITCH Remove the power switch. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/starter/#starting-system-service-information) . Connect a positive (+) lead from the auxiliary battery to terminal 11 (SWIL) and a negative (-) lead to terminal 5 (GND). Check that the illumination comes on. OK Power switch illumination comes on. TEXT IN ILLUSTRATION *a Component without harness connected (Power Switch) NG --> See step 4 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER SWITCH - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) AND BODY GROUND) Disconnect the L62 certification ECU (smart key ECU assembly) connector. Disconnect the L43 power switch connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition L43-11 (SWIL) - L62-11 (SWIL) Always Below 1 ohms L43-11 (SWIL) - Body ground Always 10 kohms or higher L43-5 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
4. REPLACE POWER SWITCH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/starter/#starting-system-service-information)
5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
6. REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#theft-deterrent-system-keyless-entry-system-service-information)

The main body ECU (multiplex network body ECU) detects the condition of each door unlock detection switch.

Scheme 28

Scheme 29

Scheme 30

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 / Main Body / Data List. Read the display on the Techstream. MAIN BODY Tester Display Measurement Item/Range Normal Condition Diagnostic Note FL Door Lock Pos Front door unlock detection switch LH signal/ON or OFF ON: Front door LH unlocked OFF: Front door LH locked - FR Door Lock Pos Front door unlock detection switch RH signal/ON or OFF ON: Front door RH unlocked OFF: Front door RH locked - RL-Door Lock Pos SW Rear door unlock detection switch LH signal/ON or OFF ON: Rear door LH or RH unlocked OFF: Rear door LH and RH locked - RR-Door Lock Pos SW Rear door unlock detection switch RH signal/ON or OFF ON: Rear door LH or RH unlocked OFF: Rear door LH and RH locked - OK Normal conditions listed above are displayed. Result Result Proceed to OK A Front door unlock detection switch LH does not operate B Front door unlock detection switch RH does not operate C Rear door unlock detection switch LH does not operate D Rear door unlock detection switch RH does not operate E B --> See step 2 C --> See step 4 D --> See step 6 E --> See step 9 A --> See step 12
2. INSPECT FRONT DOOR LOCK ASSEMBLY LH Inspect the front door lock assembly LH. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information) . OK Front door lock assembly LH is normal. NG --> See step 13 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) Disconnect the O8 front door lock assembly LH connector. Disconnect the L7 main body ECU (multiplex network body ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition O8-8 (LSSR) - L7-7 (LSFL) Always Below 1 ohms O8-8 (LSSR) - Body ground Always 10 kohms or higher O8-7 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
4. INSPECT FRONT DOOR LOCK ASSEMBLY RH Inspect the front door lock assembly RH. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information) . OK Front door lock assembly RH is normal. NG --> See step 15 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) Disconnect the N8 front door lock assembly RH connector. Disconnect the L7 main body ECU (multiplex network body ECU) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection (Symbols) Condition Specified Condition N8-7 (LSSR) - L7-18 (LSFR) Always Below 1 ohms N8-7 (LSSR) - Body ground Always 10 kohms or higher N8-8 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 14
6. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH Inspect the rear door lock with motor assembly LH. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information) . OK Rear door lock with motor assembly LH is normal. NG --> See step 16 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND) Disconnect the Q1 rear door lock with motor assembly LH connector. Disconnect the 2D instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition Q1-6 (LSSR) - 2D-25 Always Below 1 ohms Q1-6 (LSSR) - Body ground Always 10 kohms or higher Q1-9 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2D-25 - MB-5 (LSR) Always Below 1 ohms 2D-25 - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 17 OK --> See step 14
9. INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH Inspect the rear door lock with motor assembly RH. Refer to «INSPECTION»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information) . OK Rear door lock with motor assembly RH is normal. NG --> See step 18 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND) Disconnect the P1 rear door lock with motor assembly RH connector. Disconnect the 2B instrument panel junction block assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition P1-6 (LSSR) - 2B-29 Always Below 1 ohms P1-6 (LSSR) - Body ground Always 10 kohms or higher P1-9 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information) . Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2B-29 - MB-5 (LSR) Always Below 1 ohms 2B-29 - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *a Component without harness connected (Instrument Panel Junction Block Assembly) NG --> See step 17 OK --> See step 14
12. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(/toyota/prius-v/i-2011-2014/remont/interiorillumination-lights/#lighting-system-interior-diagnostics-circuit-tests__problem-symptoms-table)
13. REPLACE FRONT DOOR LOCK ASSEMBLY LH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information)
14. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
15. REPLACE FRONT DOOR LOCK ASSEMBLY RH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information)
16. REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information)
17. REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/body-electrical/#power-distribution-service-information)
18. REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH. Refer to «REMOVAL»(/toyota/prius-v/i-2011-2014/remont/door-locks-anti-theft-systems/#door-lock-system-service-information)

See also:
• INITIALIZATION
• HOW TO PROCEED WITH TROUBLESHOOTING
• REMOVAL
• INSPECTION
• HOW TO PROCEED WITH TROUBLESHOOTING
• REMOVAL
• GENERAL INFORMATION
• REMOVAL
• INSPECTION
• DATA LIST / ACTIVE TEST
• TERMINALS OF ECU
• PROBLEM SYMPTOMS TABLE