Audio System Description: Troubleshooting
- DIAGNOSIS FUNCTION
- Diagnosis Start-Up
For shifting to diagnosis mode, push "CD" button 3 times with pressing "1" and "6" of TRUCK TUNE APS button at the same time while the audio power is OFF and ACC is ON.
In diagnosis mode, by pressing "CD" button for 2 seconds or turning the ignition key OFF, the diagnosis mode is released.
- Service Check Mode
- After the diagnosis start-up, the system enters service check mode when "TUNE UP" switch is pressed.
- Error codes over tuner and connected equipment are displayed on the screen of tuner.NOTE:
- Check the present and past condition of components by performing the System Check and collecting stored DTC memories.
- Check results shall be displayed as one of six following indications: "good", "ECHn", "CHEC", "nCon", "Old" or "nrES".
Results for each check are displayed as follows:
- good:
No DTC is detected for both "System Check Confirmation" and "Diagnosis Memory Response".
- nCon:
The Component does not respond to the "Diagnosis On Instruction" command. Applicable to only the system where connected components are limited to be used.
- ECHn:
Application of new version has been confirmed by the "Diagnosis On Check", and there is one or more DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response".
- CHEC:
Application of new version has been confirmed by the "Diagnosis On Check", and there is no DTC which indicates "Replacement" in the "System Check Result Response" or "Diagnosis Memory Response", but one or more DTC which indicated "Check" is identified.
- Old:
Application of old version is confirmed by the "Diagnosis On Check", and DTC is identified in the "System Check Result Response" or "Diagnosis Memory Response".
- nrES:
No response is identified to the "System Check Start Instruction" and "Request for System Check Result" commands.
- Display Screen For Service Check
Example:
Connection parts (physical address): Multi Display (P160), Radio Receiver (P190), CD changer (P360)
- "ECHN" Detail Display Mode Screen
- "CHEC" Detail Display Mode Screen
- "OLD" Detail Display Mode Screen
- Recheck
- Pressing the [ch1] key in Service Check Mode executes recheck.
- To display the recheck process, follow the sequence indicated Display Screen for Service Check.
- Diagnosis Start-Up
- DIAGNOSIS CODE LIST
- Physical address: 190 Radio receiver assembly
- Logical address: 01 (Communication control)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Logical address: 61 (Cassette switch)
- Logical address: 62 (CD player)/63 (CD Auto changer)
- Logical address: 01 (Communication control)
- Physical address: 440 Stereo component amplifier
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Physical address: 360 CD Auto Changer
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Physical address: 190 Radio receiver assembly
- PROBLEM SYMPTOMS TABLE NOTE:
- When replacing the internal mechanism (computer part) of the audio system, be careful that no part of your body or clothing comes in contact with the terminals of the leads from the IC, etc. of the replacement part (spare part).
- This inspection procedure is a simple troubleshooting guide which should be carried out on the vehicle during system operation and was prepared on the assumption of system component troubles (except for the wires and connectors, etc.).
Always inspect the trouble taking the following items into consideration:
- Open or short circuit of the wire harness
- Connector or terminal connection faultComponent Troubleshooting
Component/Problem See Radio Radio Not Operating When Power Switch Turned To "ON" 1 Display Indicates When Power Switch Turned To "ON," But No Sound (Including "Noise") Is Produced 2 Noise Present, But AM-FM Not Operating 3 Any Speaker Does Not Work 4 Any AM Or FM Does Not Work 5 Few Preset Turning Bands 5 Reception Poor 6 Sound Quality Poor 7 Preset Memory Disappears 8 Tape Player Cassette Tape Cannot Be Inserted 9 Cassette Tape Inserts, But No Power 10 Power Coming In, But Tape Player Not Operating 11 Any Speaker Does Not Work 12 Sound Quality Poor 13 Tape Jammed, Malfunction With Tape Speed Or Auto-Reverse 14 Cassette Tape Will Not Eject. 15 CD Player CD Cannot Be Inserted 16 CD Inserted But No Power 17 Power Coming In, But CD Player Not Operating 18 Sound Jumps 19 Sound Quality Poor (Volume Faint) 20 Any Speaker Does Not Work 21 CD Will Not Be Ejected 22 Power Amplifier No Power Coming In 23 Power Coming In, But Power Amplifier Not Operating 24 Any Speaker Does Not Work 25 Noise Noise Occurs 26 Noise Produced By Vibration Or Shock While Driving 27 Noise Produced When Engine Starts 28
The term "AM" includes LW, MW and SW, and the term "FW" includes UKW.
- Radio not operating when power switch turned to "ON":
- Radio display indicates when power switch turned to "ON", but no sound (including "noise") is produced:
- Radio noise present, but AM-FM not operating:
- Radio any speaker does not work:
- Radio any AM or FM does not work few preset tuning bands :
- Radio poor reception :
- Radio sound quality poor :
- Radio preset memory disappears :
- Tape player cassette tape cannot be inserted :
- Tape player cassette tape inserted, but no power :
- Tape player power coming in, but tape player not operating :
- Tape player any speaker does not work :
- Tape player sound quality poor (volume faint) :
- Tape player tape jammed, malfunction with tape speed or auto-reverse :
- Tape player cassette tape will not be ejected :
- CD player CD cannot be inserted :
- CD player CD inserted, but no power :
- CD player power coming in, but CD player not operating :
- CD player sound jumps :
- CD player sound quality poor (volume faint) :
- CD player any speaker does not work :
- CD player CD will not be ejected :
- Power amplifier no power coming in :
- Power amplifier power coming in, but woofer (power) amplifier not operating :
- Power amplifier any speaker does not work :
- Noise occurs :
- Noise produced by vibration or shock while driving :
- Noise produced when engine starts :