HOW TO PROCEED WITH TROUBLESHOOTING [03/2012 - ]
HINT
- Use the following procedure to troubleshoot the lighting system.
- *: Use the Techstream.
- VEHICLE BROUGHT TO WORKSHOP NEXT: Go to next step
- CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK NEXT: Go to next step
- INSPECT BATTERY VOLTAGE Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step. NEXT: Go to next step
- 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 A: Go to next step
- 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
- OVERALL ANALYSIS AND TROUBLESHOOTING* Data List / Active TestRefer to «DATA LIST / ACTIVE TEST [03/2012 - ]»(ref-602778-S02048378482014030500000) Terminals of ECURefer to «TERMINALS OF ECU [03/2012 - ]»(ref-602778-S02259699352014030500000) NEXT: Go to next step
- ADJUST, REPAIR OR REPLACE NEXT: Go to next step
- CONFIRMATION TEST NEXT --> END
PROBLEM SYMPTOMS TABLE [03/2012 - ]
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 | Refer to |
|---|---|---|
| Only front interior light does not illuminate. | Map light assembly | Refer to INSPECTION [03/2012 - ] |
| Harness or connector | ||
| Only rear interior light does not illuminate. | Spot light assembly | Refer to INSPECTION [03/2012 - ] |
| Harness or connector | ||
| Only footwell light does not illuminate. | Footwell light | Refer to INSPECTION [03/2012 - ] |
| Harness or connector | ||
| Only engine switch illumination does not illuminate. | Engine switch illumination circuit | Refer to Engine Switch Illumination Circuit |
| Certification ECU (Smart key ECU assembly) | Refer to COMPONENTS [03/2012 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] | |
| Illuminated entry system does not operate normally. | DOME fuse | |
| Door courtesy switch circuit | Refer to Door Courtesy Switch Circuit | |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit | |
| Driver side door control switch circuit | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder | |
| Front passenger side door control switch circuit | Refer to All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch | |
| IG signal circuit | Refer to IG Signal Circuit | |
| ACC signal circuit | Refer to ACC Signal Circuit | |
| Interior light circuit | Refer to Interior Light Circuit | |
| Engine switch illumination circuit | Refer to Engine Switch Illumination Circuit | |
| Certification ECU (Smart key ECU assembly) | Refer to COMPONENTS [03/2012 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] |
ILLUMINATED ENTRY SYSTEM
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Battery saving function does not operate. | Door courtesy switch circuit | Refer to Door Courtesy Light Circuit |
| Door unlock detection switch circuit | Refer to Door Unlock Detection Switch Circuit | |
| IG signal circuit | Refer to IG Signal Circuit | |
| ACC signal circuit | Refer to ACC Signal Circuit | |
| Interior light auto cut circuit | Refer to Interior Light Auto Cut Circuit | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] |
BATTERY SAVING CONTROL
| Symptom | Suspected Area | Refer to |
|---|---|---|
| All the interior lights that receive power via the DOME relay do not illuminate. (The DOME fuse is normal.) | Interior light power source circuit | Refer to Interior Light Power Source Circuit |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] | |
| All the interior lights that receive power via the DOME relay do not illuminate. (Although the DOME fuse is replaced, the fuse breaks again.) | Map light assembly | Refer to INSPECTION [03/2012 - ] |
| Spot light assembly | Refer to INSPECTION [03/2012 - ] | |
| No. 2 room light assembly | Refer to INSPECTION [03/2012 - ] | |
| Courtesy light assembly | Refer to INSPECTION [03/2012 - ] | |
| Footwell light (No. 1 interior illumination light assembly) | Refer to INSPECTION [03/2012 - ] | |
| Front door scuff plate | Refer to INSPECTION [03/2012 - ] | |
| Vanity light assembly | Refer to COMPONENTS [03/2012 - ] | |
| Harness or connector | ||
| Instrument panel junction block assembly | Refer to COMPONENTS [03/2012 - ] | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] |
INTERIOR LIGHT POWER SOURCE CONTROL
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Vanity light does not illuminate. | Bulb | |
| Harness or connector |
VANITY LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Glove box light does not illuminate. | Glove box light assembly | Refer to INSPECTION [03/2012 - ] |
| Harness or connector |
GLOVE BOX LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Courtesy light does not illuminate. | Bulb | |
| Courtesy light assembly | Refer to INSPECTION [03/2012 - ] | |
| Door courtesy switch circuit | Refer to Door Courtesy Switch Circuit | |
| Door courtesy light circuit | Refer to Door Courtesy Light Circuit | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] |
COURTESY LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Luggage compartment light does not illuminate. (Power back door system operates normally.) | Bulb | |
| Back door courtesy switch circuit | Refer to Door Courtesy Switch Circuit | |
| Luggage compartment light circuit | Refer to Luggage Room Light Circuit | |
| Power back door unit assembly | Refer to COMPONENTS [03/2012 - ] |
LUGGAGE COMPARTMENT LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Console box light does not illuminate. | Console box light | Refer to COMPONENTS [03/2012 - ] |
| Harness or connector |
CONSOLE BOX LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Front personal light does not illuminate. | Map light assembly | Refer to INSPECTION [03/2012 - ] |
| Harness or connector |
FRONT PERSONAL LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Rear room light does not illuminate. | Spot light assembly | Refer to INSPECTION [03/2012 - ] |
| Harness or connector |
REAR PERSONAL LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| Center console spot light does not illuminate. | Center console illumination circuit | Refer to Overhead Console Illumination Light Circuit |
| IG signal circuit | Refer to IG Signal Circuit | |
| ACC signal circuit | Refer to ACC Signal Circuit | |
| Main body ECU (Multiplex network body ECU) | Refer to COMPONENTS [03/2012 - ] |
CENTER CONSOLE SPOT LIGHT
| Symptom | Suspected Area | Refer to |
|---|---|---|
| All of instrument panel illumination lights do not come on. (Taillights operate normally.) | PANEL fuse | |
| Harness or connector |
INSTRUMENT PANEL ILLUMINATION
Scheme 18
![Scheme 18: TERMINALS OF ECU [03/2012 - ]](https://i.diagnostdata.com/repair/51/51ff43fb838d4bed2adec1037f0abb9ee66f8d37e890eed998f2bb4af20e1fab.webp)
Scheme 19
Scheme 20
- CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Disconnect the 2D, 2F, 2K and F14 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-17 - Body ground GR - Body ground ACC power supply Engine switch on (ACC) 11 to 14 V Engine switch off Below 1 V 2A-20 - Body ground G - Body ground IG power supply Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V 2F-40 (BECU) - Body ground G - Body ground Battery power supply Always 11 to 14 V 2K-1 - Body ground W - 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 according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 2D-6 (GND1) - Body ground BR - Body ground Ground Always Below 1 ohms F14-3 (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 2D, 2F, 2K and F14 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 2D-11 (FRCL) - Body ground L - Body ground Front courtesy light RH drive output Front door RH closed 11 to 14 V Front door RH open Below 1 V 2D-12 (ILE) - Body ground LG - Body ground Footwell lights drive output Footwell lights off 11 to 14 V Footwell lights on (100% brightness of light on state) Below 1 V Footwell lights on (Illuminate in light adjustment state) Pulse generation 2D-13 (ILE) - Body ground G - Body ground Interior lights drive output Interior lights off 11 to 14 V Interior lights on (100% brightness of light on state) Below 1 V Interior lights on (Illuminate in light adjustment state) Pulse generation 2D-26 (FRCY) - Body ground L - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V Front door RH closed 11 to 14 V 2H-23 (ILE) - Body ground L - Body ground Scuff plate light LH drive output Scuff plate light LH off 11 to 14 V Scuff plate light LH on (100% brightness of light on state) Below 1 V Scuff plate light LH on (Illuminate in light adjustment state) Pulse generation 2H-24 (ILE) - Body ground LG - Body ground Scuff plate light RH drive output Scuff plate light RH on (100% brightness of light on state) Below 1 V Scuff plate light RH on (Illuminate in light adjustment state) Pulse generation Scuff plate light RH off 11 to 14 V 2H-26 (FLCY) - Body ground B - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V Front door LH closed 11 to 14 V 2H-27 (LSWL) - Body ground Y - Body ground Rear door unlock detection switch LH input Rear door LH locked Pulse generation Rear door LH unlocked Below 1 V F12-1 (FLCL) - Body ground SB - Body ground Front courtesy light LH drive output Front door LH closed 11 to 14 V Front door LH open Below 1 V F12-3 (LCTY) - Body ground L - Body ground Rear door courtesy light switch LH input Rear door LH open Below 1 V Rear door LH closed 11 to 14 V F12-4 (LCYL) - Body ground V - Body ground Rear courtesy light LH drive output Front door LH closed 11 to 14 V Front door LH open Below 1 V F12-5 (CSPT) - Body ground LG - Body ground Center console spot light drive output Engine switch off 11 to 14 V Engine switch on (IG or ACC) Below 1 V F12-6 (DOMR) - Body ground R - Body ground DOME relay drive output DOME relay off 11 to 14 V DOME relay on Below 1 V F13-6 (RCTY) - Body ground GR - Body ground Rear door courtesy light switch RH input Rear door RH open Below 1 V Rear door RH closed 11 to 14 V F13-7 (LSFL) - Body ground P - Body ground Front door unlock detection switch LH input Front door LH locked Pulse generation Front door LH unlocked Below 1 V F13-18 (LSFR) - Body ground SB - Body ground Front door unlock detection RH switch input Front door RH locked Pulse generation Front door RH unlocked Below 1 V F14-1 (RCYL) - Body ground R - Body ground Rear courtesy light RH drive output Front door RH closed 11 to 14 V Front door RH open Below 1 V F14-2 (LSWR) - Body ground B - Body ground Rear door unlock detection switch RH input Rear door RH locked Pulse generation Rear door RH unlocked Below 1 V F14-25 (DMDR) - Body ground GR - Body ground Interior light door switch input Interior light door switch pushed Pulse generation Interior light door switch not pushed Below 1 V F14-26 (DMON) - Body ground G - Body ground Interior light on/off switch input Interior light on/off switch not pushed Pulse generation Interior light on/off switch pushed 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 have a malfunction.
- CHECK POWER BACK DOOR UNIT ASSEMBLY (POWER BACK DOOR ECU) Disconnect the P33 ECU connector. Measure the resistance according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition P33-11 (GND) - 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. Measure the voltage according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition P33-8 (IG) - Body ground SB - Body ground IG power supply Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V P33-10 (ECUB) - Body ground BR - Body ground Battery power supply Always 11 to 14 V P33-12 (B) - Body ground Y - 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. Reconnect the P33 ECU connector. Initialize the power back door systemRefer to «INITIALIZATION [03/2012 - ]»(ref-602818-S11117839312014030500000) . 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 P33-3 (CTYO) - Body ground R - Body ground Luggage compartment light drive output Luggage compartment lights on Below 1 V Luggage compartment lights off 11 to 14 V P33-20 (FUL) - Body ground P - Body ground Back door courtesy switch signal input Back door open Below 1 V Back door closed Pulse generation If the result is not as specified, the ECU may have a malfunction.
- CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Disconnect the F58 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 F58-1 (+B) - Body ground LG - Body ground +B 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 F58-15 (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 F58 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 F58-11 (SWIL) - Body ground G - Body ground Engine switch illumination drive output Engine switch illumination on 11 to 14 V or pulse generation Engine 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 [03/2012 - ]
- 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 DLC3Refer to «GENERAL INFORMATION [03/2012 - ]»(ref-602551-S10595751552014030500000) .
- INSPECT BATTERY VOLTAGE Standard Voltage 11 to 14 V If the voltage is below 11 V, recharge or replace the battery.
DATA LIST / ACTIVE TEST [03/2012 - ]
- 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 engine switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Main Body or Back Door / 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 Engine switch ACC signal/ON or OFF ON: Engine switch on (ACC) OFF: Engine switch off - IG SW Engine switch IG signal/ON or OFF ON: Engine switch on (IG) OFF: Engine switch off - RR Door Courtesy SW Rear door courtesy light switch RH signal/ON or OFF ON: Rear door RH open OFF: Rear door RH closed - RL Door Courtesy SW Rear door courtesy light switch LH signal/ON or OFF ON: Rear door LH open OFF: Rear door LH 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 open OFF: Front door RH closed - 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 open OFF: Front door LH closed - Dome Light DOOR SW Interior light door switch signal/ON or OFF ON: Interior light door switch not pushed OFF: Interior light door switch pushed - Dome Light SW Interior light on/off switch signal/ON or OFF ON: Interior light on/off switch pushed OFF: Interior light on/off switch not pushed - RR-Door Lock Pos SW Rear door unlock detection switch RH signal/ON or OFF ON: Rear door RH unlocked OFF: Rear door RH locked - RL-Door Lock Pos SW Rear door unlock detection switch LH signal/ON or OFF ON: Rear door LH unlocked OFF: Rear door LH locked - BACK DOOR Tester Display Measurement Item/Range Normal Condition Diagnostic Note Courtesy SW Back door courtesy switch signal/ON or OFF ON: Back door open OFF: Back door closed
- 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 / Main Body or Smart Access / 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 Front interior lights, rear interior light, footwell lights and scuff plate lights ON/OFF Interior light door switch on (not pushed), interior light on/off switch off (not pushed) and all doors closed Center Console Spot LGT Center console spot light ON/OFF Engine switch off Relay for Interior Light Auto Cut Function Light cut relay (DOME relay) ON/OFF Any interior light comes on. ON: Light goes off OFF: Light turns on SMART ACCESS Tester Display Test Part Control Range Diagnostic Note Power/Engine SW Light Engine switch illumination ON/OFF All doors closed
INSPECTION PROCEDURE
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Note. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
Scheme 21
- INSPECT DOME RELAY Remove the DOME relay from the No. 1 relay block assembly. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 3 - 5 Voltage is not applied between terminals 1 and 2 10 kohms or higher 3 - 5 Voltage is applied between terminals 1 and 2 Below 1 ohms TEXT IN ILLUSTRATION *1 Component without harness connected (DOME Relay) NG --> REPLACE DOME RELAY OK: Go to next step
- CHECK HARNESS AND CONNECTOR (BATTERY - DOME RELAY) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition Relay Terminal 2 - Body ground Engine switch off 11 to 14 V Relay Terminal 5 - Body ground Engine switch off 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK HARNESS AND CONNECTOR (DOME RELAY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Disconnect the F12 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 Relay Terminal 1 - F12-6 (DOMR) Always Below 1 ohms Relay Terminal 1 - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
- CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Install the DOME relay to the No. 1 relay block assembly. Reconnect the F12 main body ECU (multiplex network body ECU) connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F12-6 (DOMR) - Body ground Engine switch on (IG) Below 1 V TEXT IN ILLUSTRATION *1 Component with harness connected (Main Body ECU (Multiplex Network Body ECU)) NG --> See step 5 OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (DOME RELAY - EACH LIGHT)
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [03/2012 - ]»(ref-602778-S25230072222014030500000)