AUDIO SYSTEM & MULTI CENTER DISPLAY TROUBLESHOOTING

Transcription

1 Page 1 of 13 SUBJECT: AUDIO SYSTEM & MULTI CENTER DISPLAY TROUBLESHOOTING No: DATE: June, 2003 MODEL: 2004 Endeavor CIRCULATE TO: [ ] GENERAL MANAGER [X] PARTS MANAGER [X] TECHNICIAN [X] SERVICE ADVISOR [X] SERVICE MANAGER [X] WARRANTY PROCESSOR [ ] SALES MANAGER PURPOSE This bulletin contains condensed diagnostic information and quick reference troubleshooting charts for servicing the audio systems with multi center display used in the 2004 Endeavor. The procedures in this bulletin are intended to supplement the procedures in Group 54 of the service manual, to help diagnose some typical failures and problems. BACKGROUND INFORMATION The audio system used in the Endeavor uses M Bus technology for communication between the components and the multi center display. Adjusting some audio component controls has no direct effect on the related system functions. Many audio controls send signals from the component to the multi center display, where the display processes the signal and then sends the actual control signal back to the audio component(s) where the proper function is activated. A suspected radio problem or failure may actually be caused by a malfunctioning multi center display, or vice versa. AFFECTED VEHICLES 2004 Endeavor Continued FILE UNDER: Group 54 Chassis Electrical in the Dealer Service Information Binder (2581)

2 Page 2 of 13 COMPONENT COMBINATIONS Center Display Unit (Yazaki) p/n MR Center Display Unit (Yakazi) p/n MR Head Unit (Mitsubishi) p/n MR model DY 3U47U Head Unit (Panasonic) p/n MR model CQEB0260L Panel (Mitsubishi) p/n MR model SW 740 Panel (Mitsubishi) p/n MR model SW 741

3 Page 3 of 13 SYSTEM DIAGRAM Head Units MR (Mitsubishi) MR (Panasonic)

4 Page 4 of 13 PROCEDURES A. Self Diagnosis Functions The system has the following built in, self diagnosis functions to assist in locating the problem area. 1. SPEAKER DIAGNOSIS FUNCTION Checks each output channel (one at a time) to verify proper operation of the amplifier, speaker wires, and the NOTE: There is no check for the center speaker in Infinity systems. This feature improves efficiency when checking audio system output difficulties. It is able to check the signal path from the head unit all the way to the speaker. It can check the amplifier, the cable on Infinity systems, speakers wires and the speakers for proper operation. The head unit will send out a test tone to each channel separately (one channel at a time). It will indicate on the display which channel is sending out the tone. The corresponding speaker should play the tone. There are two different test tones (frequencies), one for the tweeter and one for the woofer. The speaker diagnosis function works in the test mode. Before using this function, set up the test mode using the following steps: a. Test Mode Entry CONDITION OF HEAD UNIT 1. Ignition key must be in ACC position. 2. Turn on audio system. 3. Turn off audio system (you now have 60 seconds to perform the following steps) TEST MODE START UP 1. Push and release the Channel 1 button. 2. Push and release the Tune/Seek DOWN button 3. Push and release the Tune/Seek UP button 4. Push and release the Channel 6 button. The test mode will now start. NOTE: The above operation must be done within 60 seconds after the head unit is turned OFF. You will not be able to put the radio into the test mode after 60 seconds. If a mistake is made during the entry into the test mode or the 60 seconds run out, push the power button on the head unit and turn it ON and then OFF again. Then you can re start test mode from the beginning. Continued

5 Page 5 of 13 b. Test Mode Operation The test mode operates as shown in the TEST MODE chart below. The test tone can be repeated at the specified frequency and time for each speaker. The following output channel can be switched by pushing the Channel 6 button. c. CANCEL Test Mode The test mode can be canceled by the following procedure: 1. Push any button except the Channel 6 button. (Pushing a mode button such as FM/AM or CD will switch off that mode.) 2. Turn the ignition key OFF. 2. NO DISPLAY OPERATION CHECK FUNCTION The head unit has a function that will allow it to work by itself without connection to the center display. This function can be used to confirm proper operation without the display. If there is a problem with the display, the head unit may also appear to have a problem. This function allows the head unit to be checked regardless of the condition of the display. a. Conditions to start the operation check function: 1. Key must be in the OFF position. b. Operation Procedure To start the operation check function: 1. Push and hold the FM/AM and Power buttons at the same time. 2. While holding the two buttons, turn on the key. The Operation Check Function will start, to confirm if there is no problem at the head unit side when there is no display. B. Audio System Troubleshooting 1. DISCONNECTING THE BATTERY The audio system stores in memory the preset radio stations, stations selected during a search, and volume/tone/balance positions. When the radio loses main power, this data is kept in memory for approximately one hour. Note the memory data before disconnecting the battery, unplugging the 14 pin connector, or pulling the IOD plug.. Continued

6 Page 6 of MULTI FUNCTION CENTER DISPLAY TERMINAL STATUS The following chart shows center display terminal status and possible cause/effect information. C 09 Center Display Termi nal No. Input/ Output Signal Symbol Terminal Voltage(V) 1 Input +B Hi: Battery 2 Input IG1 Hi: Battery 3 Input ACC(ACC power supply) Hi: Battery Harness Problem Trouble Symptom Resulting from Harness Problem Open Short X Screen display does not appear. Panel switch cannot be operated for audio unit. X Blown multi purpose fuse. X Both ACC and IG1 are opened, screen display does not appear. Panel switch cannot be operated for audio unit. X Blown multi purpose fuse. X ACC and IG1 are opened, screen display does not appear. Panel switch cannot be operated for audio unit. X Blown multi purpose fuse. X Nighttime illumination does not appear for display units. 4 Input ILL+ Hi: Battery Lo:0 1 X Blown multi purpose fuse. 5 Input ILL X Rheostat does not work. X Rheostat does not work. 6 GND (Ground) 7 M SHIELD 8 Input/ M DATA Output (AUDIO) 9 Input/ Output 10 Input/ Output M CLOCK (AUDIO) M BUSY (AUDIO) X Screen display does not appear. Panel switch cannot be operated for audio unit. Hi:4 5 Lo:0 1 Hi:4 5 Lo:0 1 Hi:4 5 Lo: Input VSS Hi: Battery Lo:0 1 X X Audio display does not appear. Panel switch cannot be operated for audio unit. X X Audio display does not appear. Panel switch cannot be operated for audio unit. X X Audio display does not appear. Panel switch cannot be operated for audio unit. X X Audio is not changed automatically by vehicle speed. 12 Input EX TEMP X Outside air temperature does not appear (display EO ). X Outside air temperature does not appear (display ES ). 13 N.C. 14 GND TEMP X X Outside air temperature does not appear (display EO ).

7 Page 7 of Audio System Head Unit Terminal Status Terminal No. Input/ Output Signal Symbol Terminal Voltage(V) Harness Problem Trouble Symptom Resulting from Harness Problem Open Short 1 Output SPEAKER 0~Battery X No sound is output from rear right speaker. RR(+) X No sound is output from rear left and right 2 Output SPEAKER 0~Battery X No sound is output from rear left speaker. RL(+) X No sound is output from rear left and right 3 Output ANTENNA Hi:10V or X X Low radio sensitivity. + B more Lo:0~1V 4 Input ILL(+) Battery X Nighttime illumination does not appear for audio units. X Blown multi purpose fuse. 5 Output SPEAKER 0~Battery X No sound is output from front left speaker. FL(+) X No sound is output from front left and right 6 Output SPEAKER 0~Battery X No sound is output from front right speaker. FR(+) X No sound is output from front left and right 7 Output SPEAKER 0~Battery X No sound is output from rear right speaker. RR( ) X No sound is output from rear left and right 8 Output SPEAKER 0~Battery X No sound is output from rear left speaker. RL( ) X No sound is output from rear left and right 9

8 Page 8 of 13 Terminal No. Input/ Output Signal Symbol Terminal Voltage(V) Harness Problem Trouble Symptom Resulting from Harness Problem Open Short 10 Input ACC (ACC Battery X Audio power supply does not turn on. power X Blown multi purpose fuse. supply) 11 Input +B Battery X CD is not ejected when ACC power is turned off. Contents of memory are cleared. X Blown multi purpose fuse. 12 Input ILL ( ) 13 Output SPEAKER 0~Battery X No sound is output from front left speaker. FL( ) X No sound is output from front left and right 14 Output SPEAKER 0~Battery X No sound is output from front right speaker. FR( ) X No sound is output from front left and right 15 Input/ M DATA Hi: 4 or Panel switches cannot be operated. Output more X X Lo:1 or less 16 Input/ M SCK Hi: 4 or Panel switches cannot be operated. Output more X X Lo:1 or less REMO Lo:1 or less Steering remote control switches cannot be operated. IN X 20 SHIELD EARTH (M BUS) 21 Input/ M BUSY Hi: 4 or Panel switches cannot be operated. Output more X X Lo:1 or less Input TELE Hi: 4 or X Audio volume is not reduced. PHONE MUTE more Lo:1 or less 24 Input REMO OUT 0~5 X X Steering remote control switches cannot be operated.

9 Page 9 of INSPECTION PROCEDURES Trouble Symptom Inspection Chart Before troubleshooting, perform the self diagnosis functions provided earlier in this bulletin. Trouble Symptom No display appears after ignition key is turned to ACC. No display for audio functions (radio or CD). Display does not change to reflect audio function changes. Dim display Audio controls do not operate Inspection Procedure a b c d e a. Display Not Working Conditions: 1. Ignition key in ACC or ON position. 2. No display appears and none of the audio system functions respond. Check connector C 09 NG Repair OK Measure C 09 display connector terminals (1), (2), (3) from body ground. *Key switch = ACC *OK = Battery NO Repair fuse and vehicle harness YES Measure C 09 display connector terminal (6), for short *OK = approx. zero ohms OK NO Repair harness Exchange center display unit

10 Page 10 of 13 b. No Radio Display (Clock Display Works) Conditions: 1. Ignition key in ACC or ON position. 2. No display appears. 3. Time display appears, but audio function displays do not appear. 4. Approximately 30 seconds later, E Com error code appears. 5. Audio functions may be OK except for BASS/TREBLE setting. Can you operate the BASS/TREBLE setting of the audio unit? NO Refer to inspection procedure e. YES Exchange center display unit. c. Display Will Not Change (Frozen / Locked Up) Conditions: 1. Ignition key in ACC or ON position. 2. Audio mode is set to radio, CD player, or CD changer (not power off) and the sound can be heard. 3. Time display appears, but audio function displays do not appear. 4. Approximately 30 seconds later, E Com error code appears. 5. Audio functions may be OK except for BASS/TREBLE setting. Can you operate the BASS/TREBLE setting of the audio unit? NO Refer to inspection procedure e. YES Exchange center display unit. d. DIM DISPLAY Conditions: 1. Ignition key in ACC or ON position. 2. Brightness of the display does not change by pressing ILL on/off. Measure C 09 center display unit connector. *Connector disconnected *Voltage between terminal (4) and body ground *OK = 0 V (ILL OFF) Battery (ILL ON) NO Repair fuse and harness. YES Exchange center display unit.

11 Page 11 of 13 e. No Response From Audio Function Controls Ignition key in ACC or ON position. Some controls cannot be operated. Display of time appears.

12 Page 12 of 13 CD Player Error Messages Error Message Condition Checking Procedure No. Disc No. Message (1) No Discs no NO DISC If disc(s) are loaded, eject then reload each disc. If the NO DISC message appears again, exchange the CD Player. (2) Focus Error (unable to read out TOC) yes E01 Eject disc(s) and inspect. Check that they are right side up, and check for scratches, dirt, or damage. Try a new CD. If the E01 message appears again, exchange the CD player. (3) Abnormal Disc Data is unable to read out consecutively or parity error as with ROM disc, scratched or dirty disc, excessive shock, or empty adapter for 8cm. disc. yes E02 Eject disc(s) and inspect. Check for scratches, dirt, or damage. Try a new CD. If the disc is a CD ROM, try a regular CD. If the E02 message appears again, exchange the CD player. (4) Protected High Temperature yes HOT Turn off the power. If the temperature is normal, wait a short time and try again. If the problem persists, exchange the CD player. (5) Mechanism Error Disc insertion fault, eject fault, changing disc error, or improper position of pickup. (6) Communication Error, Fault of Power Line, & other audio unit trouble no E03 Eject the disc. Try to load one disc and check operation. If problem remains, remove mounting screws from the CD player and try again. If the problem persists, exchange the CD player. no E Reset the CD player by removing all connectors for 10 seconds. Reconnect all connections and try again. If problem(s) remain, exchange the CD player. If the disc will not eject, check the main power (cable to main unit). If there are other components down line that are working correctly, exchange the CD player. WARRANTY INFORMATION Normal audio system warranty exchange procedures apply to all Endeavor audio components including the control panel. Refer to Warranty Bulletin WB for details. Refer to Appendix A in the Warranty Policy and Procedure Manual for details on audio unit exchanges. MMNA Authorized Audio/Center Display Unit Exchange Centers are listed at the end of this bulletin. Dealers must call the appropriate exchange center when a customer s unit is diagnosed with a problem requiring replacement. The exchange center will ship a replacement unit to the dealership, usually within 48 hours. Immediately after the exchange unit is installed, return the defective unit with the completed diagnostic checklist to the supplying exchange center in the same shipping box that the replacement unit came in. Failure to return the replaced unit will result in the dealership being billed for the replacement unit and suspended from further exchange shipments until the invoice is paid or the unit returned. IMPORTANT All replacement audio units and center displays contain a copy of a diagnostic checklist. If unit replacement is necessary, the checklist must be completed and returned with the old unit. Missing or incomplete checklists will result in a chargeback of the related warranty claim.

13 Page 13 of 13 MMNA Authorized Audio/Center Display Unit Exchange Centers MITSUBISHI AUDIO CHASSIS AND ALL CONTROL PANELS Western U.S. Yamada Electronics 1590 N. Lakeview Ave. Anaheim, CA Phone FAX Central U.S. Radio Sales & Service Corp Milwee Houston, TX Phone FAX Eastern U.S. H&R Radio Service 155 York Rd. Warminster, PA Phone in PA FAX Canada Crescent Electronics 3115 Marentette Ave. Windsor, ON N8X 4G1 Phone or FAX or PANASONIC AUDIO CHASSIS ONLY UNITED STATES Tel Exchange Service System (Call here first to order units): Phone or Eastern Standard Time FAX Panasonic Dealer Tech Hotline Actual Repair Location: Yamada Electronics 1590 N. Lakeview Ave. Anaheim, CA Phone FAX CANADA Panasonic Canada Inc. Automotive Audio Service Dept Ambler Dr., Unit #2 Mississauga, ON L4W 4J5 Phone or FAX or YAZAKI CENTER DISPLAYS UNITED STATES Yazaki North America, Inc Eagle Road Normal, IL Phone FAX (HOURS 6:30 a.m. 5:00 p.m. Central Standard Time) CANADA Yazaki North America, Inc Eagle Road Normal, IL Phone FAX (HOURS 6:30 a.m. 5:00 p.m. Central Standard Time) Mitsubishi Motors North America, Inc.