ON BOARD DIAGNOSIS
- The trouble diagnosis function has a self-diagnosis mode for conducting trouble diagnosis automatically and a confirmation/adjustment mode for operating manually.
- Self-diagnosis mode performs the audio unit diagnosis, and it indicates the results to the display.
- The confirmation/adjustment mode allows the technician to check, modify or adjust the vehicle signals and set values, as well as to monitor the system error records. The checking, modifying or adjusting generally require human intervention and judgment (the system cannot make judgment automatically).
On Board Diagnosis Item
| Mode | Description | |
|---|---|---|
| Self Diagnosis | Audio unit diagnosis. | |
| Confirmation/Adjustment | Display Diagnosis | The following check functions are available: color tone check by color bar display, light and shade check by gray scale display. |
| Vehicle Signals | Diagnosis of signals can be performed for vehicle speed, lights, reverse and vehicle recognition. | |
| Speaker Test | The connection of a speaker can be confirmed by test tone. | |
| Error History | The system malfunction and the frequency when occurring in the past are displayed. When the malfunctioning item is selected, the time and place that the selected malfunction last occurred are displayed. | |
| Camera System | Guiding line position that overlaps rear view camera image can be adjusted. (without around view monitor) | |
| AV COMM Diagnosis | The communication condition of each unit of display audio system can be monitored. | |
| Delete Unit Connection Log | Not used for this vehicle. | |
| Initialize Setting | Initializes the audio unit memory. | |
Scheme 218
Scheme 219
- Start the engine.
- Turn the audio system OFF.
- While pressing the "1" button, turn the volume control dial clockwise or counterclockwise for 40 clicks or more. (When the self-diagnosis mode is started, a short beep will be heard.)
- Shifting from current screen to system initial screen is performed by pressing "iPod MENU" button.
- The trouble diagnosis initial screen is displayed, and then the items of "Self Diagnosis" and "Confirmation/Adjustment" can be selected.
Scheme 220
Scheme 221
- Start the self-diagnosis function and select "Self Diagnosis". Self-diagnosis subdivision screen is displayed, and the self-diagnosis mode starts. The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trouble diagnosis.
- Diagnosis results are displayed after the self-diagnosis is completed. The unit names and the connection lines are color-coded according to the diagnostic results. Diagnosis results Unit Connection line Normal Green Green Connection malfunction Gray Yellow Unit malfunction (1) Red Green NOTE: (1) Control unit (audio unit) and is displayed in red. Replace audio unit if "Self-Diagnosis did not run because of a control unit malfunction" is indicated. The symptom is audio unit internal error. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ". If multiple errors occur at the same time for a single unit, the screen switch colors are determined according to the following order of priority: red > gray. The comments of the self-diagnosis results can be viewed with a component in the diagnosis result screen.
Detection Range of Self-diagnosis Mode
- The self-diagnosis mode allows the technician to diagnose the connection in the communication line between audio unit and each unit and the internal operation of the audio unit.
- If there is malfunction to the switch of the audio unit because the start condition of the diagnosis function is switch operation, the on board diagnosis function cannot be started.
SELF-DIAGNOSIS RESULTS
Check the applicable display at the following table, and then repair the malfunctioning parts.
Only Unit Part Is Displayed In Red.
| Screen switch | Description | Possible malfunction location/Action to take |
|---|---|---|
| Control unit | Malfunction is detected in audio unit power supply and ground circuits. | Check audio unit power supply and ground circuits. When detecting no malfunction in those components, replace audio unit. Refer to " REMOVAL AND INSTALLATION ". |
A Connecting Cable Between Units Is Displayed In Yellow.
| Area with yellow connection lines | Description | Possible malfunction location/Action to take |
|---|---|---|
| Control unit <==> BTHF | When either one of the following items is detected: TEL adapter unit power supply and ground circuits are malfunctioning. AV communication circuits between audio unit and TEL adapter unit are malfunctioning. | TEL adapter unit power supply and ground circuits. AV communication circuits between audio unit and TEL adapter unit. |
Scheme 222
- Start the diagnosis function and select "Confirmation/Adjustment". The confirmation/adjustment mode indicates where each item can be checked or adjusted.
- Select each switch on the "Confirmation/Adjustment Mode" screen to display the relevant trouble diagnosis screen. Press the "iPod MENU" switch to return to the initial Confirmation/Adjustment mode screen.
Scheme 223
Speaker Test
Select "Speaker Test" to display the Speaker Diagnosis screen. Press "Start" to generate a test tone in a speaker. Press "Start" again to generate a test tone in the next speaker. Press "End" to stop the test tones.
Scheme 224
HANDS-FREE PHONE SYSTEM ON BOARD DIAGNOSIS
During on board diagnosis the diagnosis function of TEL adapter unit starts with the operation of the steering switch and performs the diagnosis when ignition switch ACC.
The on board diagnosis has 3 modes: the self-diagnosis mode that performs the trouble diagnosis, the speaker adaptation data deleting mode and the hands-free phone system initialization mode.
| CAUTION | Perform the diagnosis with the vehicle stopped. Perform STEP2 if necessary. |
| STEP | MODE | Description |
|---|---|---|
| STEP 1 | Self-diagnosis | The self-diagnosis mode performs the microphone test and the diagnosis of TEL adapter unit, TEL antenna and steering unit, and then reads out the results with the sound and indicates them on the display. |
| STEP 2 | Speaker adaptation data deleting | The speaker adaptation data deleting mode can delete the speaker adaptation data. |
| Hands-free phone system initialization | Hands-free phone system initialization mode can perform the initialization of hands-free phone system. |
Self-diagnosis mode reads out the self-diagnosis results.
Note. Error count is read out simultaneously when reading out the DTC name. The errors are read out continuously when some errors occur at the same time.
| DTC | DTC name | Possible causes |
|---|---|---|
| DTC 10000 | INTERNAL FAILURE | TEL adapter unit |
| DTC 01000 | ANT. SHORT TO BATT OR OPEN | TEL antenna |
| DTC 00100 | ANT. SHORT TO GROUND | |
| DTC 00010 | STEERING REMOTE BUTTON STUCK A | Steering switch |
| DTC 00001 | STEERING REMOTE BUTTON STUCK B | |
| DTC 00000 | THERE ARE NO FAILURE RECORDS TO REPORT |
SELF-DIAGNOSIS RESULTS POSSIBLE CAUSES
AUDIO UNIT: Diagnosis Procedure
- CHECK FUSE Check that the following fuses of the audio unit are not blown. Power source Fuse No. Battery 35 Ignition switch ACC or ON 19 Is inspection result OK? YES: GO TO 2. NO: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
- CHECK AUDIO UNIT POWER SUPPLY CIRCUIT Check voltage between the audio unit and ground. Signal name Audio unit Probe Condition Standard Reference value Terminal Connector (+) (-) Ignition switch Battery power supply M92 19 20 OFF 9.0 - 15.6 V Battery voltage ACC power supply 7 ACC Is inspection result OK? YES: GO TO 3. NO: Check harness between audio unit and fuse.
- CHECK GROUND CIRCUIT Turn ignition switch OFF. Disconnect audio unit connectors. Check continuity between audio unit harness connectors and ground. Signal name Connector Terminal Ignition switch position Continuity Ground M92 20 OFF Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
TEL ADAPTER UNIT: Diagnosis Procedure
- CHECK FUSE Check for blown fuses. Power source Fuse No. Battery 35 Ignition switch ACC or ON 19 Is the inspection result normal? YES: GO TO 2. NO: Be sure to eliminate cause of malfunction before installing new fuse.
- CHECK POWER SUPPLY CIRCUIT Check voltage between TEL adapter unit harness connector and ground. Signal name TEL adapter unit Probe Condition Standard Reference value Terminal Connector (+) (-) Ignition switch Battery power supply M138 1 4 OFF 9.0 - 16.0 V Battery voltage ACC power supply 2 ACC 7.0 - 16.0 V Is the inspection result normal? YES: GO TO 3. NO: Check harness between TEL adapter unit and fuse.
- CHECK GROUND CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector. Check continuity between TEL adapter unit harness connector and ground. Signal name Connector Terminal Ignition switch position Continuity Ground M138 4 OFF Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
Diagnosis Procedure
- CHECK CONTINUITY CAMERA POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect audio unit connector and rear view camera connector. Check continuity between audio unit harness connector and rear view camera harness connector. Audio unit Rear view camera Continuity Connector Terminal Connector Terminal M93 35 D167 1 Existed Check continuity between audio unit harness connector and ground. Audio unit Ground Continuity Connector Terminal M93 35 Not existed Is inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK VOLTAGE CAMERA POWER SUPPLY Connect audio unit connector and rear view camera connector. Turn ignition switch ON. Shift the selector lever to "R". Check voltage between audio unit harness connector. Probe Standard Voltage (Approx.) (+) (-) Audio unit Connector Terminal Connector Terminal M93 35 M93 36 5.9 - 6.5 V 6.2 V Is inspection result normal? YES: GO TO 3. NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ".
- CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect audio unit connector and rear view camera connector. Check continuity between audio unit harness connector and rear view camera harness connector. Audio unit Rear view camera Continuity Connector Terminal Connector Terminal M93 34 D167 3 Existed Check continuity between audio unit harness connector and ground. Audio unit Ground Continuity Connector Terminal M93 34 Not existed Is inspection result normal? YES: GO TO 4. NO: Repair harness or connector.
- CHECK CAMERA IMAGE SIGNAL Connect audio unit connector and rear view camera connector. Turn ignition switch ON. Shift the selector lever to "R". Check signal between audio unit harness connector. Probe Condition Standard Reference value (+) (+) Audio unit Connector Terminal Connector Terminal M93 34 M93 36 When camera image is displayed. Waveform according to camera image is input. Is inspection result normal? YES: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ". NO: Replace rear view camera. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S04286584742014112400000) ".
- CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector and microphone connector. Check continuity between TEL adapter unit harness connector and microphone harness connector. TEL adapter unit Microphone Continuity Connector Terminals Connector Terminals M138 7 R20 1 Existed 8 2 29 4 Check continuity between TEL adapter unit harness connector and ground. TEL adapter unit Ground Continuity Connector Terminals M138 29 Not existed 7 Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK VOLTAGE MICROPHONE VCC Connect TEL adapter unit connector. Turn ignition switch ON. Check voltage between TEL adapter unit harness connector. Probe Standard Voltage (Approx.) (+) (-) TEL adapter unit Connector Terminal Connector Terminal M138 29 M138 8 4.7 - 5.3 V 5.0 V Is the inspection result normal? YES: GO TO 3. NO: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ".
- CHECK MICROPHONE SIGNAL Connect microphone connector. Check signal between TEL adapter unit harness connector. Probe Condition Standard Reference value (+) (+) TEL adapter unit Connector Terminal Connector Terminal M138 7 M138 8 Give a voice. Waveform according to voice is input. Is the inspection result normal? YES: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ". NO: Replace microphone. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S28357912272014112400000) ".
- CHECK CONTINUITY CONTROL SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector. Check continuity between TEL adapter unit harness connector and ground. TEL adapter unit Ground Standard Reference value (Approx.) Connector Terminals M138 22 3.1 V or less 0 V 24 27 Is the inspection result normal? YES: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ". NO: Repair harness or connector.
- CHECK STEERING SWITCH SIGNAL A (STEERING SWITCH TO TEL ADAPTER UNIT) CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector and spiral cable connector. Check continuity between TEL adapter unit harness connector and spiral cable harness connector. TEL adapter unit Spiral cable Continuity Connector Terminal Connector Terminal M138 12 M33 24 Existed Check continuity between TEL adapter unit harness connector and ground. TEL adapter unit Ground Continuity Connector Terminal M138 12 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK SPIRAL CABLE Check spiral cable. Is the inspection result normal? YES: GO TO 3. NO: Replace spiral cable. Refer to " «REMOVAL AND INSTALLATION»(ref-672639-S32347741632014112400000) ".
- CHECK TEL ADAPTER UNIT VOLTAGE Connect TEL adapter unit connector and spiral cable connector. Turn ignition switch ON. Check voltage between TEL adapter unit harness connector. Probe Standard Voltage (Approx.) (+) (-) TEL adapter unit Connector Terminal Connector Terminal M138 12 M138 14 0 - 5.25 V 5.0 V Is the inspection result normal? YES: GO TO 4. NO: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ".
- CHECK STEERING SWITCH Turn ignition switch OFF. Check steering switch. Refer to " «COMPONENT INSPECTION»(ref-672666-S13070414592014112400000) ". Is the inspection result normal? YES: INSPECTION END NO: Replace steering wheel. Refer to " «REMOVAL AND INSTALLATION»(ref-672626-S13447035482014112400000) ".
Component Inspection
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
Standard
Between terminals 14 and 17
switch ON: 708 - 737 ohms
MENU DOWN switch ON: 314 - 327 ohms
MENU UP switch ON: 118 - 123 ohms
SOURCE switch ON: Less than 1 ohms
Between terminals 15 and 17
switch ON: 314 - 327 ohms
VOL UP switch ON: 118 - 123 ohms
VOL DOWN switch ON: Less than 1 ohms
Scheme 225
- CHECK STEERING SWITCH SIGNAL B (STEERING SWITCH TO TEL ADAPTER UNIT) CIRCUIT Turn ignition switch OFF. Disconnect TEL adapter unit connector and spiral cable connector. Check continuity between TEL adapter unit harness connector and spiral cable harness connector. TEL adapter unit Spiral cable Continuity Connector Terminal Connector Terminal M138 13 M33 31 Existed Check continuity between TEL adapter unit harness connector and ground. TEL adapter unit Ground Continuity Connector Terminal M138 13 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK SPIRAL CABLE Check spiral cable. Is the inspection result normal? YES: GO TO 3. NO: Replace spiral cable. Refer to " «REMOVAL AND INSTALLATION»(ref-672639-S32347741632014112400000) ".
- CHECK TEL ADAPTER UNIT VOLTAGE Connect TEL adapter unit connector and spiral cable connector. Turn ignition switch ON. Check voltage between TEL adapter unit harness connector. Probe Standard Voltage (Approx.) (+) (-) TEL adapter unit Connector Terminal Connector Terminal M138 13 M138 14 0 - 5.25 V 5.0 V Is the inspection result normal? YES: GO TO 4. NO: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ".
- CHECK STEERING SWITCH Turn ignition switch OFF. Check steering switch. Refer to " «COMPONENT INSPECTION»(ref-672666-S26856528652014112400000) ". Is the inspection result normal? YES: INSPECTION END NO: Replace steering wheel. Refer to " «REMOVAL AND INSTALLATION»(ref-672626-S13447035482014112400000) ".
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
Standard
Between terminals 14 and 17
switch ON: 708 - 737 ohms
MENU DOWN switch ON: 314 - 327 ohms
MENU UP switch ON: 118 - 123 ohms
SOURCE switch ON: Less than 1 ohms
Between terminals 15 and 17
switch ON: 314 - 327 ohms
VOL UP switch ON: 118 - 123 ohms
VOL DOWN switch ON: Less than 1 ohms
Scheme 226
- CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT (STEERING SWITCH TO TEL ADAPTER UNIT) Turn ignition switch OFF. Disconnect TEL adapter unit connector and spiral cable connector. Check continuity between TEL adapter unit harness connector and spiral cable harness connector. TEL adapter unit Spiral cable Continuity Connector Terminal Connector Terminal M138 14 M33 33 Existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK SPIRAL CABLE Check spiral cable. Is the inspection result normal? YES: GO TO 3. NO: Replace spiral cable. Refer to " «REMOVAL AND INSTALLATION»(ref-672639-S32347741632014112400000) ".
- CHECK GROUND CIRCUIT Connect TEL adapter unit connector. Check continuity between TEL adapter unit harness connector and ground. TEL adapter unit Ground Continuity Connector Terminal M138 14 Existed Is the inspection result normal? YES: GO TO 4. NO: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ".
- CHECK STEERING SWITCH Check steering switch. Refer to " «COMPONENT INSPECTION»(ref-672666-S24201995702014112400000) ". Is the inspection result normal? YES: INSPECTION END NO: Replace steering wheel. Refer to " «REMOVAL AND INSTALLATION»(ref-672626-S13447035482014112400000) ".
Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.
Standard
Between terminals 14 and 17
switch ON: 708 - 737 ohms
MENU DOWN switch ON: 314 - 327 ohms
MENU UP switch ON: 118 - 123 ohms
SOURCE switch ON: Less than 1 ohms
Between terminals 15 and 17
switch ON: 314 - 327 ohms
VOL UP switch ON: 118 - 123 ohms
VOL DOWN switch ON: Less than 1 ohms
Scheme 227
- CHECK STEERING SWITCH SIGNAL A CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT) Turn ignition switch OFF. Disconnect audio unit connector and TEL adapter unit connector. Check continuity between audio unit harness connector and TEL adapter unit harness connector. Audio unit TEL adapter unit Continuity Connector Terminal Connector Terminal M92 6 M138 17 Existed Check continuity between audio unit harness connector and ground. Audio unit Ground Continuity Connector Terminal M92 6 Not existed Is inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK AUDIO UNIT VOLTAGE Connect audio unit connector and TEL adapter unit connector. Turn ignition switch ON. Check voltage between audio unit harness connector terminals. Probe Standard Voltage (Approx.) (+) (-) Audio unit Connector Terminal Connector Terminal M92 6 M92 15 0 - 3.4 V 3.3 V Is inspection result normal? YES: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ".
- CHECK STEERING SWITCH SIGNAL B CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT) Turn ignition switch OFF. Disconnect audio unit connector and TEL adapter unit connector. Check continuity between audio unit harness connector and TEL adapter unit harness connector. Audio unit TEL adapter unit Continuity Connector Terminal Connector Terminal M92 16 M138 18 Existed Check continuity between audio unit harness connector and ground. Audio unit Ground Continuity Connector Terminal M92 16 Not existed Is inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK AUDIO UNIT VOLTAGE Connect audio unit connector and TEL adapter unit connector. Turn ignition switch ON. Check voltage between audio unit harness connector terminals. Probe Standard Voltage (Approx.) (+) (-) Audio unit Connector Terminal Connector Terminal M92 16 M92 15 0 - 3.4 V 3.3 V Is inspection result normal? YES: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ".
- CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT (TEL ADAPTER UNIT TO AUDIO UNIT) Turn ignition switch OFF. Disconnect audio unit connector and TEL adapter unit connector. Check continuity between audio unit harness connector and TEL adapter unit harness connector. Audio unit TEL adapter unit Continuity Connector Terminal Connector Terminal M92 15 M138 19 Existed Is inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
- CHECK GROUND CIRCUIT Connect audio unit connector. Check continuity between audio unit harness connector and ground. Audio unit Ground Continuity Connector Terminal M92 15 Existed Is inspection result normal? YES: Replace TEL adapter unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S10262055942014112400000) ". NO: Replace audio unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672666-S34130609622014112400000) ".