PROBLEM SYMPTOMS TABLE [04/2013 - ]
Note. Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Refer to REGISTRATION [04/2013 - ]
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.
| Symptom | Suspected Area | Link |
|---|---|---|
| Front map light (LH side) does not illuminate | Bulb | |
| Map light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Front map light (RH side) does not illuminate | Bulb | |
| Map light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Front dome light does not illuminate | Bulb | |
| Interior light switch signal circuit | Refer to Interior Light Switch Signal Circuit [04/2013 - ] | |
| Map light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
FRONT INTERIOR LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Rear map light (LH side) does not illuminate | Bulb | |
| Spot light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Rear map light (RH side) does not illuminate | Bulb | |
| Spot light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Rear dome light does not illuminate | Bulb | |
| Spot light assembly | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
REAR INTERIOR LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Vanity light LH does not illuminate | Bulb | |
| Visor assembly LH | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Vanity light RH does not illuminate | Bulb | |
| Visor assembly RH | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector |
VANITY LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Courtesy light LH does not illuminate | Bulb | |
| Courtesy light assembly LH | Refer to INSPECTION [04/2013 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [04/2013 - ] | |
| Harness or connector | ||
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] | |
| Courtesy light RH does not illuminate | Bulb | |
| Courtesy light assembly RH | Refer to INSPECTION [04/2013 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [04/2013 - ] | |
| Harness or connector | ||
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
DOOR COURTESY LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Glove box light does not illuminate | Glove box light assembly | Refer to INSPECTION [04/2013 - ] |
| Harness or connector |
GLOVE BOX LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Luggage compartment room light does not illuminate | Bulb | |
| No. 1 luggage compartment light assembly | Refer to INSPECTION [04/2013 - ] | |
| Luggage compartment door courtesy switch circuit | Refer to Luggage Compartment Door Courtesy Switch Circuit [04/2013 - ] | |
| Harness or connector | ||
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
LUGGAGE COMPARTMENT ROOM LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Footwell light LH does not illuminate | Bulb | |
| No. 1 interior illumination light assembly LH | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector | ||
| Footwell light RH does not illuminate | Bulb | |
| No. 1 interior illumination light assembly RH | Refer to INSPECTION [04/2013 - ] | |
| Harness or connector |
FOOTWELL LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| Front door inside handle illumination light LH does not illuminate | Front door inside handle illumination light assembly LH | Refer to INSPECTION [04/2013 - ] |
| Harness or connector | ||
| Instrument panel junction block assembly | Refer to REMOVAL [04/2013 - ] | |
| Front door inside handle illumination light RH does not illuminate | Front door inside handle illumination light assembly RH | Refer to INSPECTION [04/2013 - ] |
| Harness or connector | ||
| Instrument panel junction block assembly | Refer to REMOVAL [04/2013 - ] |
FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT
| Symptom | Suspected Area | Link |
|---|---|---|
| All the interior lights that receive power via the DOME CUT relay do not illuminate (The DOME fuse is normal) | Interior light auto cut circuit | Refer to Interior Light Auto Cut Circuit [04/2013 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
INTERIOR LIGHT POWER SOURCE CONTROL
| Symptom | Suspected Area | Link |
|---|---|---|
| Interior light control does not operate normally | Interior light circuit | Refer to Interior Light Circuit [04/2013 - ] |
| Interior light switch signal circuit | Refer to Interior Light Switch Signal Circuit [04/2013 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [04/2013 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [04/2013 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [04/2013 - ] | |
| IG signal circuit | Refer to IG Signal Circuit [04/2013 - ] | |
| ACC signal circuit | Refer to ACC Signal Circuit [04/2013 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] | |
| Engine switch illumination does not illuminate | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] |
| Engine switch illumination circuit | Refer to Engine Switch Illumination Circuit [04/2013 - ] | |
| Certification ECU (Smart key ECU assembly) | Refer to REMOVAL [04/2013 - ] |
ILLUMINATED ENTRY SYSTEM (INTERIOR LIGHT CONTROL)
| Symptom | Suspected Area | Link |
|---|---|---|
| Front door inside handle illumination light control does not operate normally | Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [04/2013 - ] |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [04/2013 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [04/2013 - ] | |
| Inside handle illumination light circuit | Refer to Inside Handle Illumination Light Circuit [04/2013 - ] | |
| CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] | |
| Front door inside handle illumination light dimmer control does not operate | CAN communication system | Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2013 - ] |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
ILLUMINATED ENTRY SYSTEM (FRONT DOOR INSIDE HANDLE ILLUMINATION LIGHT CONTROL)
| Symptom | Suspected Area | Link |
|---|---|---|
| Battery saving function does not operate | IG signal circuit | Refer to IG Signal Circuit [04/2013 - ] |
| ACC signal circuit | Refer to ACC Signal Circuit [04/2013 - ] | |
| Front door courtesy switch circuit | Refer to Front Door Courtesy Switch Circuit [04/2013 - ] | |
| Rear door courtesy switch circuit | Refer to Rear Door Courtesy Switch Circuit [04/2013 - ] | |
| Luggage compartment door courtesy switch circuit | Refer to Luggage Compartment Door Courtesy Switch Circuit [04/2013 - ] | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit [04/2013 - ] | |
| Interior light auto cut circuit | Refer to Interior Light Auto Cut Circuit [04/2013 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to REMOVAL [04/2013 - ] |
BATTERY SAVING CONTROL
Scheme 10
![Scheme 10: TERMINALS OF ECU [04/2013 - ]](https://i.diagnostdata.com/repair/a9/a977d44c41d46b6c8899360a65fd2ec81b0d6e698a2813000c4202418690c9ad.webp)
Scheme 11
Scheme 12
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *A Main Body ECU (Multiplex Network Body ECU) with 3 Connectors - - *1 Main Body ECU (Multiplex Network Body ECU) - - *a 3 Connectors - - *A Main Body ECU (Multiplex Network Body ECU) with 2 Connectors - - *1 Main Body ECU (Multiplex Network Body ECU) - - *a 2 Connectors - - Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors. Measure the voltage on the wire harness side connector according to the value(s) in the table below. Terminal No. Wiring Color Terminal Description Condition Specified Condition 4E-1 - Body ground B - Body ground Battery power supply Always 11 to 14 V 4F-1 - Body ground B - Body ground 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 on the wire harness side connector according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 4B-7 - 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 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 4B-19 - Body ground P - Body ground ACC power supply Engine switch on (ACC) 11 to 14 V Engine switch off Below 1 V 4C-22 - Body ground V - Body ground IG power supply Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V 4D-27 - Body ground B - Body ground Front door inside handle light LH power supply Always 11 to 14 V 4B-15 - Body ground B - Body ground Front door inside handle light RH power supply Always 11 to 14 V 4D-31 - Body ground L - Body ground Courtesy light LH and No. 1 luggage compartment light power supply DOME CUT relay on 11 to 14 V DOME CUT relay off Below 1 V 4B-18 - Body ground L - Body ground No. 1 interior illumination lights and courtesy light RH power supply DOME CUT relay on 11 to 14 V DOME CUT relay off Below 1 V 4B-16 - Body ground R - Body ground Map light assembly and vanity lights power supply DOME CUT relay on 11 to 14 V DOME CUT relay off Below 1 V 4B-10 - Body ground LG - Body ground Interior lights drive output Interior lights off (when operated by illuminated entry system) 11 to 14 V Interior lights on (when operated by illuminated entry system) Below 1 V 4B-11 - Body ground R - Body ground No. 1 interior illumination lights drive output No. 1 interior illumination lights off (when operated by illuminated entry system) 11 to 14 V No. 1 interior illumination lights on (when operated by illuminated entry system) Below 1 V K1-27 (DMDR) - Body ground L - Body ground Door switch signal input Door switch on Below 1 V Door switch off Pulse generation K1-28 (DMON) - Body ground W - Body ground Front dome light switch signal input Front dome light switch on Below 1 V Front dome light switch off Pulse generation K2-25(TCYL) - Body ground R - Body ground Luggage compartment room light drive input No. 1 luggage compartment light off 11 to 14 V No. 1 luggage compartment light on Below 1 V K2-6 (FLCY) - Body ground V - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V Front door LH closed 11 to 14 V K2-27 (FRCY) - Body ground V - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V Front door RH closed 11 to 14 V 4D-25 - Body ground BE - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V Rear door LH closed Pulse generation 4B-17 - Body ground BE - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V Rear door RH closed Pulse generation 4D-16 - Body ground G - Body ground Luggage compartment door courtesy switch input Luggage compartment door open Below 1 V Luggage compartment door closed 11 to 14 V 4B-26 - Body ground G - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation Front door LH unlocked Below 1 V 4B-27 - Body ground B - Body ground Front door unlock detection switch RH input Front door RH locked Pulse generation Front door RH unlocked Below 1 V 4B-23 - Body ground L - Body ground Rear door unlock detection switch LH input Rear door LH locked Pulse generation Rear door LH unlocked Below 1 V K1-2 (LSWR) - Body ground W - Body ground Rear door unlock detection switch RH input Rear door RH locked Pulse generation Rear door RH unlocked Below 1 V K1-17 (FRCL) - Body ground G - Body ground Courtesy light RH drive output Courtesy light RH off 11 to 14 V Courtesy light RH on Below 1 V K1-1 (FLCL) - Body ground V - Body ground Courtesy light LH drive output Courtesy light LH off 11 to 14 V Courtesy light LH on Below 1 V 4B-22 - Body ground W - Body ground Front door inside handle illumination light RH drive output Front door inside handle illumination light RH off 11 to 14 V Front door inside handle illumination light RH on Below 1 V 4D-26 - Body ground W - Body ground Front door inside handle illumination light LH drive output Front door inside handle illumination light LH off 11 to 14 V Front door inside handle illumination light LH on Below 1 V If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may be malfunctioning.
- CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition K6-17 (SWIL) - K6-12 (AGND) R - LG Engine switch illumination drive output Engine switch illumination on 11 to 14 V Engine switch illumination off Below 1 V If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.
DIAGNOSIS SYSTEM [04/2013 - ]
- 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.
- CHECK DLC3 Check the DLC3. Refer to «GENERAL INFORMATION [04/2013 - ]»(ref-665529-S26412111322014102400000)
- INSPECT BATTERY VOLTAGE Measure the battery voltage. Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery.
DATA LIST / ACTIVE TEST [04/2013 - ]
- DATA LIST 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. 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. Connect the Techstream to the DLC3. Turn the engine 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. Body Electrical > Main Body > Data List Tester Display Measurement Item Range Normal Condition Diagnostic Note ACC SW Engine switch on (ACC) signal ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - IG SW Engine switch on (IG) signal ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - RR Door Courtesy SW Rear door courtesy light switch assembly RH signal ON or OFF ON: Rear door RH open OFF: Rear door RH closed - RL Door Courtesy SW Rear door courtesy light switch assembly LH signal ON or OFF ON: Rear door LH open OFF: Rear door LH closed - FR Door Lock Pos Front door RH unlock detection switch signal LOCK or UNLOCK LOCK: Front door RH locked UNLOCK: Front door RH unlocked - FR Door Courtesy SW Front door courtesy light switch assembly RH signal ON or OFF ON: Front door RH open OFF: Front door RH closed - FL Door Lock Pos Front door LH unlock detection switch signal LOCK or UNLOCK LOCK: Front door LH locked UNLOCK: Front door LH unlocked - FL Door Courtesy SW Front door courtesy light switch assembly LH signal ON or OFF ON: Front door LH open OFF: Front door LH closed - Dome Light DOOR SW Door switch signal ON or OFF ON: Door switch pressed OFF: Door switch not pressed - Dome Light SW Front dome light switch signal ON or OFF ON: Front dome light switch pressed OFF: Front dome light switch not pressed - RR-Door Lock Pos SW Rear door RH unlock detection switch signal ON or OFF ON: Rear door RH unlocked OFF: Rear door RH locked - RL-Door Lock Pos SW Rear door LH unlock detection switch signal ON or OFF ON: Rear door LH unlocked OFF: Rear door LH locked - Luggage Courtesy SW Luggage compartment door courtesy switch signal ON or OFF ON: Luggage compartment door open OFF: Luggage compartment door closed - Interior Light Control Operation of the illuminated entry system OFF or ON Customized value is displayed Displayed only when All Data is selected. I/L ON W/Door Key Unlock Function that lights up the interior lights when the doors are unlocked OFF or ON Customized value is displayed Displayed only when All Data is selected. Lighting Time Lighting time of the delay control function (illuminated entry system) 15s, 7.5s or 30s Customized value is displayed Displayed only when All Data is selected. Room Light when Aprchd Function that lights up the interior lights when a key enters any actuation area OFF or ON Customized value is displayed Displayed only when All Data is selected. I/L when ACC OFF Function that lights up the interior lights when the engine switch is turned from on (ACC or IG) to off OFF or ON Customized value is displayed Displayed only when All Data is selected. Light Control Function that lights up the ambient lights (while driving) OFF or ON Customized value is displayed Displayed only when All Data is selected. Interior Illumination Light Function that lights up the ambient lights (always) OFF or ON Customized value is displayed Displayed only when All Data is selected.
- 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 / (desired system) / Active Test. Perform the Active Test according to the display on the Techstream. Body Electrical > Main Body > Active Test Tester Display Measurement Item Control Range Diagnostic Note Illuminated Entry System Turns on the lights that are controlled by the illuminated entry system*1 ON or OFF Perform the Active Test with door switch in the map light assembly turned on. Relay for Interior Light Auto Cut Function DOME CUT relay ON or OFF ON: DOME CUT relay off (interior lights turn off) OFF: DOME CUT relay on (interior lights turn on) Interior Illumination Light1 Front door inside handle illumination lights ON or OFF Precondition for performing the Active Test to turn lights on and off: Engine switch is turned off just before performing the Active Test. *1: Refer to Description for the lights that are controlled by the illuminated entry system. Refer to «DESCRIPTION»(ref-665541-S04629146872014102400000) Body Electrical > Smart Access > Active Test Tester Display Measurement Item Control Range Diagnostic Note Power/Engine SW Light Engine switch illumination OFF or ON When performing this Active Test, make sure the following condition is met: The engine switch illumination is off (15 seconds or more have elapsed since it turned from on to off) and the engine switch is on (ACC) or on (IG), or the engine is running.
INSPECTION PROCEDURE
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure. Before replacing the main body ECU (multiplex network body ECU), refer to Registration. Refer to REGISTRATION [04/2013 - ]
Scheme 13
- PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the engine 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. Body Electrical > Main Body > Active Test Tester Display Measurement Item Control Range Diagnostic Note Relay for Interior Light Auto Cut Function DOME CUT relay ON or OFF ON: DOME CUT relay off (interior lights turn off) OFF: DOME CUT relay on (interior lights turn on) Body Electrical > Main Body > Active Test Tester Display Relay for Interior Light Auto Cut Function OK DOME CUT relay operates. Result Proceed to OK NG Result: 1 OK PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [04/2013 - ]»(ref-665541-S23960105662014102400000) Result: 2 NG See step 2
- CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Disconnect the 4F instrument panel junction block assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 4F-1 - Body ground Always 11 to 14 V Result Proceed to OK NG Result: 2 NG REPAIR OR REPLACE HARNESS OR CONNECTOR Result: 1 OK See step 3
- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Remove the instrument panel junction block assembly. Refer to «REMOVAL [04/2013 - ]»(ref-665734-S14624714932014102400000) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to «REMOVAL [04/2013 - ]»(ref-665734-S14624714932014102400000) Measure the voltage according to the value(s) in the table below. *a Component without harness connected (Instrument Panel Junction Block Assembly) - - Standard Voltage Tester Connection Condition Specified Condition 4D-31 - Battery negative terminal Battery positive (+) --> 4F-1 Battery negative (-) --> MB-23 (DOMR) 11 to 14 V 4B-18 - Battery negative terminal Battery positive (+) --> 4F-1 Battery negative (-) --> MB-23 (DOMR) 11 to 14 V 4B-16 - Battery negative terminal Battery positive (+) --> 4F-1 Battery negative (-) --> MB-23 (DOMR) 11 to 14 V Result Proceed to OK NG Result: 1 OK REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to «REMOVAL [04/2013 - ]»(ref-665734-S14624714932014102400000) Result: 2 NG REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY. Refer to «REMOVAL [04/2013 - ]»(ref-665734-S14624714932014102400000)