Originally Posted by Jon316G

Here are some random diagnostic outputs to use while troubleshooting.
Let me know if I missed any outputs that can be useful and I'll update this post.

Instrument Cluster:

1. Put the key in the ignition
2. Push and hold the odometer button
3. Turn the key to the 'ON' position (do not start the car)
4. Continue to hold the odometer button until 'test' appears in the lower right corner
5. Once 'test' appears, you can release the button
6. Now push (not hold) the odometer button to scroll through various numbered options
7. Stop when you reach the desired output
8. After a full second the output signal should toggle (ex: light illuminates, gauge sweeps)
   • Some have an on/off switch (ex: Buckle switch changes state when the seat belt is buckled)
9. To exit from the output diagnostic, simply turn the key to the 'off' position and back on.

Here is a list of all the outputs and what they mean:
01 = Buckle switch
04 = Door switch
08 = TNS relay
12 = Speedometer
13 = Tachometer
14 = Buzzer
16 = Fuel-level warning light
18 = Ignition key illumination
22 = Fuel gauge sender unit
23 = Fuel gauge
25 = Water temperature gauge
26 = Odometer tripmeter, warning and indicator light
28 = Oil pressure gauge
31 = Key reminder switch
55 = Dimmer switch


Speaker Inspection (Test Tone)

1. With the audio power on, press the 'POWER' button and simultaneously press the 'AUTO-M' button for roughly 1 second.
2. It will generate a test tone in the following order:
   1st- Front driver-side door speaker and tweeter.
   2nd- Front passenger-side door speaker and tweeter.
   3rd- Driver-side rear speaker.
   4th- Passenger-side rear speaker.

LCD Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘SEEK’ button for approximately 1 second
2. All the LCDs will illuminate. Inspect for any bad characters.
3. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Button Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘CLOCK’ button for approximately 1 second
2. Press all the buttons. A buzzer sounds with each button pressed.
3. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Temperature Control ****:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘SCAN-UP’ button for approximately 1 second
2. "A/C TEMP" should appear on the left side of the LCD display and a number from 0 to 16 on the right.
3. The number advances in increments of 1 as you turn the temperature control ****
4. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Radio Reception Condition Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘PRESET 2’ button for approximately 1 second.
   • Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location). Before inspecting the system, verify that radio reception is adequate
   • When inspecting, select a frequency band (radio station) with the best reception
     LEV- 5 through LEV- 9 = Antenna, antenna feeder and base unit are normal
     LEV- 3 through LEV- 4 = Change the frequency (radio station) and inspect again
     LEV- 0 through LEV- 2 = Malfunction present
2. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

On-Board Diagnostic (Audio)

1. Turn the ignition to the ‘ACC’ or ‘ON’ position
2. While pressing the ‘POWER’ button, simultaneously press the ‘AM’ button and the ‘TAPE/MD’ button for 2 seconds or more
   • If several DTCs are in memory, they can display using the ‘SEEK’ button
   • If no DTC is stored, no codes will be displayed
3. To stop the on-board diagnostic test mode, turn the ignition switch to the 'LOCK' position

Identify the device and supplier codes by referring to the LCD display.
.1 09: ER20
__|_______|___________|_
Supplier..Device...........DTC

Supplier Code:
1 = FMS audio
2 = Panasonic
3 = CLARION

Device code:
00 = Cassette Deck
03 = CD player
05 = CD Changer (external)
06 = CD Changer (upper module)
07 = MD player
09 = Base Unit
10 = CD player system MP3 operation

Memory Clearing Procedure
1. Start the on-board diagnostic test mode
2. While pressing the ‘POWER’ button, simultaneously press the ‘AUDIO CONT’ button for 2 seconds or more.
3. To stop the on-board diagnostic test mode, turn the ignition switch to the ‘LOCK’ position

DTC Table (Audio System)
09: Er22 = Base unit (peripheral circuit for tuner)
09: Er20 = Power supply circuit to base unit
00: Er10 = Cassette deck communication circuit system
03: Er10 = CD player communication circuit system
05: Er10 = CD changer (external) communication circuit system
06: Er10 = CD changer (upper module) communication circuit system
07: Er10 = MD player communication circuit systemo
03: Er01 = CD player system
03: Er02 = CD player system
03: Er07 = CD player system
00: Er01 = Cassette deck system
00: Er03 = Cassette deck system
00: Er04 = Cassette tape system
05: Er01 = CD changer (external) system
05: Er07 = CD changer (external) system
06: Er01 = CD changer (upper module) system
06: Er02 = CD changer (upper module) system
06: Er07 = CD changer (upper module) system
07: Er01 = MD player system
07: Er02 = MD player system
07: Er07 = MD player system
07: Er08 = MD system
10: Er01 = CD player system MP3 operation
10: Er02 = CD player system MP3 operation
no Er = No DTCs stored


Immobilizer System (DTC Inspection)

1. Turn the ignition switch to the ‘ON’ position
2. Verify the security light state.
   • If there are any malfunctions:
     • After any malfunction is detected, the security light will function as follows for approximately 1 min.
       DTC 16 and lower: Flashes
       DTC21 and higher: Illuminates
   • If there are no malfunctions:
     • The security light illuminates for approximately 3 seconds and goes out.
3. When any malfunction has been detected, read DTCs via flashing patterns displayed after the security light flashes or illuminates for approximately 1 minute.
   • A verified DTC is flashed 10 times repeatedly by the security light.
   • If multiple DTCs are verified, the security light displays only the smallest DTC.

DTC Table (Immobilizer System)
Security light flash pattern:
∩__∩_________ = No detected communication with the coil
∩__∩∩________ = Coil malfunction
∩__∩∩∩_______ = The key ID number data cannot be read or key ID registration error
∩__∩∩∩∩______ = The keyless control module cannot read key ID number data normally
∩__∩∩∩∩∩_____ = The keyless control module has detected unregistered key ID number
∩__∩∩∩∩∩∩____ = Communication error between the keyless control module and the PCM (no response or mismatched conditions)
∩∩__∩_________= Only one key ID number is registered
∩∩__∩∩_______ = Communication error between the keyless control module and the PCM (data transfer error)
∩∩__∩∩∩______ = ID number data in the PCM and the keyless control module do not match.
NOT ILLUMINATED = Keyless control module malfunction

Originally Posted by Kamal El

Hi,
Any solutions for this before I tear my car apart?

∩__∩∩∩∩∩∩____ = Communication error between the keyless control module and the PCM (no response or mismatched conditions)

Originally Posted by Jon316G

Here are some random diagnostic outputs to use while troubleshooting.
Let me know if I missed any outputs that can be useful and I'll update this post.

Instrument Cluster:

1. Put the key in the ignition
2. Push and hold the odometer button
3. Turn the key to the 'ON' position (do not start the car)
4. Continue to hold the odometer button until 'test' appears in the lower right corner
5. Once 'test' appears, you can release the button
6. Now push (not hold) the odometer button to scroll through various numbered options
7. Stop when you reach the desired output
8. After a full second the output signal should toggle (ex: light illuminates, gauge sweeps)
   • Some have an on/off switch (ex: Buckle switch changes state when the seat belt is buckled)
9. To exit from the output diagnostic, simply turn the key to the 'off' position and back on.

Here is a list of all the outputs and what they mean:
01 = Buckle switch
04 = Door switch
08 = TNS relay
12 = Speedometer
13 = Tachometer
14 = Buzzer
16 = Fuel-level warning light
18 = Ignition key illumination
22 = Fuel gauge sender unit
23 = Fuel gauge
25 = Water temperature gauge
26 = Odometer tripmeter, warning and indicator light
28 = Oil pressure gauge
31 = Key reminder switch
55 = Dimmer switch


Speaker Inspection (Test Tone)

1. With the audio power on, press the 'POWER' button and simultaneously press the 'AUTO-M' button for roughly 1 second.
2. It will generate a test tone in the following order:
   1st- Front driver-side door speaker and tweeter.
   2nd- Front passenger-side door speaker and tweeter.
   3rd- Driver-side rear speaker.
   4th- Passenger-side rear speaker.

LCD Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘SEEK’ button for approximately 1 second
2. All the LCDs will illuminate. Inspect for any bad characters.
3. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Button Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘CLOCK’ button for approximately 1 second
2. Press all the buttons. A buzzer sounds with each button pressed.
3. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Temperature Control ****:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘SCAN-UP’ button for approximately 1 second
2. "A/C TEMP" should appear on the left side of the LCD display and a number from 0 to 16 on the right.
3. The number advances in increments of 1 as you turn the temperature control ****
4. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

Radio Reception Condition Inspection:

1. With the audio power on, press the ‘POWER’ button and simultaneously press the ‘PRESET 2’ button for approximately 1 second.
   • Even if the system is normal, radio reception may be difficult depending on where the system is inspected (indoors/outdoors, or conditions at the location). Before inspecting the system, verify that radio reception is adequate
   • When inspecting, select a frequency band (radio station) with the best reception
     LEV- 5 through LEV- 9 = Antenna, antenna feeder and base unit are normal
     LEV- 3 through LEV- 4 = Change the frequency (radio station) and inspect again
     LEV- 0 through LEV- 2 = Malfunction present
2. Turn the audio off or the ignition switch to the ‘LOCK’ position to stop the diagnostic assist function.

On-Board Diagnostic (Audio)

1. Turn the ignition to the ‘ACC’ or ‘ON’ position
2. While pressing the ‘POWER’ button, simultaneously press the ‘AM’ button and the ‘TAPE/MD’ button for 2 seconds or more
   • If several DTCs are in memory, they can display using the ‘SEEK’ button
   • If no DTC is stored, no codes will be displayed
3. To stop the on-board diagnostic test mode, turn the ignition switch to the 'LOCK' position

Identify the device and supplier codes by referring to the LCD display.
.1 09: ER20
__ _______ ___________ _
Supplier..Device...........DTC

Supplier Code:
1 = FMS audio
2 = Panasonic
3 = CLARION

Device code:
00 = Cassette Deck
03 = CD player
05 = CD Changer (external)
06 = CD Changer (upper module)
07 = MD player
09 = Base Unit
10 = CD player system MP3 operation

Memory Clearing Procedure
1. Start the on-board diagnostic test mode
2. While pressing the ‘POWER’ button, simultaneously press the ‘AUDIO CONT’ button for 2 seconds or more.
3. To stop the on-board diagnostic test mode, turn the ignition switch to the ‘LOCK’ position

DTC Table (Audio System)
09: Er22 = Base unit (peripheral circuit for tuner)
09: Er20 = Power supply circuit to base unit
00: Er10 = Cassette deck communication circuit system
03: Er10 = CD player communication circuit system
05: Er10 = CD changer (external) communication circuit system
06: Er10 = CD changer (upper module) communication circuit system
07: Er10 = MD player communication circuit system
03: Er01 = CD player system
03: Er02 = CD player system
03: Er07 = CD player system
00: Er01 = Cassette deck system
00: Er03 = Cassette deck system
00: Er04 = Cassette tape system
05: Er01 = CD changer (external) system
05: Er07 = CD changer (external) system
06: Er01 = CD changer (upper module) system
06: Er02 = CD changer (upper module) system
06: Er07 = CD changer (upper module) system
07: Er01 = MD player system
07: Er02 = MD player system
07: Er07 = MD player system
07: Er08 = MD system
10: Er01 = CD player system MP3 operation
10: Er02 = CD player system MP3 operation
no Er = No DTCs stored


Immobilizer System (DTC Inspection)

1. Turn the ignition switch to the ‘ON’ position
2. Verify the security light state.
   • If there are any malfunctions:
     • After any malfunction is detected, the security light will function as follows for approximately 1 min.
       DTC 16 and lower: Flashes
       DTC21 and higher: Illuminates
   • If there are no malfunctions:
     • The security light illuminates for approximately 3 seconds and goes out.
3. When any malfunction has been detected, read DTCs via flashing patterns displayed after the security light flashes or illuminates for approximately 1 minute.
   • A verified DTC is flashed 10 times repeatedly by the security light.
   • If multiple DTCs are verified, the security light displays only the smallest DTC.

DTC Table (Immobilizer System)
Security light flash pattern:
∩__∩_________ = No detected communication with the coil
∩__∩∩________ = Coil malfunction
∩__∩∩∩_______ = The key ID number data cannot be read or key ID registration error
∩__∩∩∩∩______ = The keyless control module cannot read key ID number data normally
∩__∩∩∩∩∩_____ = The keyless control module has detected unregistered key ID number
∩__∩∩∩∩∩∩____ = Communication error between the keyless control module and the PCM (no response or mismatched conditions)
∩∩__∩_________= Only one key ID number is registered
∩∩__∩∩_______ = Communication error between the keyless control module and the PCM (data transfer error)
∩∩__∩∩∩______ = ID number data in the PCM and the keyless control module do not match.
NOT ILLUMINATED = Keyless control module malfunction