ISUZU AXIOM 2002 Service Repair Manual

ENTERTAINMENT8C±9
MID Control Unit
Removal
1. Disconnect the battery ground cable.
2. Remove the MID control unit (3).

Refer to
MID (1) in this section.

Remove the control unit (3) from the bracket (2).
CAUTION: When the battery is disconnected, the
MID control unit directional data is lost (the control
unit returns to its start-up condition). When the
battery is reconnected, the display will be erroneous
until the control unit receives a clear GPS satellite
signal and resets its directional data.
After reconnecting the battery, wait until the satellite
mark indicator turns on. Select an area where there
are no high buildings or other obstacles to electro-
magnetic waves. Drive the vehicle in a straight line at
a speed exceeding 32 km/h (20 mph) for at least 20 se-
conds.
D08R200055
Installation
To install, follow the removal steps in the reverse order.
CAUTION: When installing the MID control unit,
turn the face with part number (4) stamped on the
MID control unit toward the front of vehicle.

8C±10ENTERTAINMENT
GPS Control Unit
Removal
1. Disconnect the battery ground cable.
2. Remove the cluster upper cover (3).

Disconnect the sun sensor connector and the GPS
control unit connector.
3. Remove the GPS control unit (2).

Remove the screws (1).
890R200035
Installation
To install, follow the removal steps in the reverse order.

ENTERTAINMENT8C±11
Self-Diagnosis
Self-Diagnosis Flow Chart±1
826R200015

8C±12ENTERTAINMENT
Self-Diagnosis Flow Chart±2 (Audio)
826R200021

ENTERTAINMENT8C±13
Self-Diagnosis Flow Chart±3 (Display)
826R200022

8C±14ENTERTAINMENT
Self-Diagnosis Flow Chart±4 (MID)
826R200023

ENTERTAINMENT8C±15
Audio Self-Diagnosis
StepActionValue(s)Ye sNo
11. Simultaneously press and hold the RESET key and
the CLOCK key (on the display panel).
2. Turn the ignition switch to the ON position.
Does DIAG appear on the display screen?
ÐGo to Step 2
Check power
supply and
component
connections.
Start
self-diagnosis
again.
2Press and release the SERVICE key (1 time only).
Does DIAG AUDIO appear on the display?
ÐGo to Step 3Go to Step 11
3Press and release the SERVICE key (1 time only) to
check tape connections.
Does TAPE OK appear on the display?
ÐGo to Step 4
On NG display,
Go to
Step 11
4Press and release the SERVICE key (1 time only) to
check CD changer connections.
Does CD CHG OK appear on the display?
ÐGo to Step 5
On NG display,
Go to
Step 11
5Press and release the SERVICE key (1 time only) to
check communication with A/C unit.
Does A/C DATA OK appear on the display?
ÐGo to Step 9
On NG display,
Go to
Step 6
6Is A/C DATA ERR1(abnormal display data line)
displayed?
Ð
Refer to A/C
self-diagnosis
Go to Step 7
7Is A/C DATA ERR2 (abnormal CLOCK data line)
displayed?
Ð
Refer to A/C
self-diagnosis
Go to Step 8
8Is A/C DATA ER3 (abnormal SW data line) displayed?ÐGo to Step 11Ð
9Press and release the SERVICE key (1 time only) to
display the A/C unit error history.
Is the action complete?
ÐGo to Step 10Ð
101. Press and release the SERVICE key (1 time only) to
change to the key diagnosis mode.
2. Press and release each key.
NOTE: As a key is pressed, its name should appear on
the display. The A/C LED should blink at 1±second
intervals.
Did the events described in Step 2 occur?
ÐGo to Step 12Go to Step 11
11Replace the audio unit.
Is the action complete?
ÐGo to Step 1Ð
12Press and release the ON/OFF key.
Is the action complete?
ÐGo to Step 1Go to Step 13
13Press and release the SERVICE key (1 time only).
Is the action complete?
ÐGo to Step 3Ð

8C±16ENTERTAINMENT
Display Self-Diagnosis
StepActionValue(s)Ye sNo
11. Simultaneously press and hold the RESET key and
the CLOCK key (on the display panel).
2. Turn the ignition switch to the ON position.
Does DIAG appear on the display screen?
ÐGo to Step 2
Check power
supply and
component
connections.
Start
self-diagnosis
again.
2Press and release the RESET key (1 time only).
Does DIAG DISP appear on the display?
ÐGo to Step 3Go to Step 10
3Press and release the RESET key (1 time only) to start
audio communications diagnosis.
Does AUD DAT OK appear on the display?
ÐGo to Step 5
On NG display,
Go to
Step 4
4Replace the audio unit.
Is the action complete?
ÐGo to Step 1Ð
51. Press and release the RESET key (1 time only).
2. Confirm that the trouble history is displayed on the
screen.
Is the trouble history displayed?
ÐGo to Step 6Ð
6Press and release the RESET key (1 time only) to start
MID communications diagnosis.
Does MID DATA OK appear on the display?
ÐGo to Step 8
On NG display,
Go to
Step 7
7Replace the MID unit.
Is the action complete?
ÐGo to Step 1Ð
81. Press and release the RESET key (1 time only) to
display MID communications error history.
2. Confirm that the error history is displayed on the
screen.
Is the error history displayed?
ÐGo to Step 9Ð
9Press and release the RESET key (1 time only) to open
all segments.
Do all segments light?
ÐGo to Step 11Go to Step 10
10Replace the display unit.
Is the action complete?
ÐGo to Step 1Ð
11Press and release the ON/OFF key to complete display
self-diagnosis.
Is the action complete?
ÐGo to Step 1Go to Step 12
12Press and release the SERVICE key.
Is the action complete?
ÐGo to Step 3Ð

ENTERTAINMENT8C±17
MID Self-Diagnosis
StepActionValue(s)Ye sNo
11. Simultaneously press and hold the RESET key and
the CLOCK key (on the display panel).
2. Turn the ignition switch to the ON position.
Does DIAG appear on the display screen?
ÐGo to Step 2
Check power
supply and
components
connections.
Start
self-diagnosis
again.
2Press and release the CLOCK key (1 time only).
Does DIAG MID appear on the display?
ÐGo to Step 3Ð
3Press and release the CLOCK key (1 time only) to
begin GPS communications diagnosis.
Does GPS OK appear on the display?
ÐGo to Step 5
On ERROR1,
Go to
Step 4
4Repair open circuit between MID and GPS receiver
(I-13±2 ~ I-16±5).
Is the action complete?
ÐGo to Step 1Ð
5Press and release the CLOCK key (1 time only) to
begin fuel injection pulse diagnosis.
Does F-INJ OK appear on the display?
ÐGo to Step 7
On ERROR2,
Go to
Step 6
6Repair open fuel injection pulse circuit (I-13±5 ~
E35±8).
Is the action complete?
ÐGo to Step 1Ð
7Press and release the CLOCK key (1 time only) to
begin fuel remainder pulse diagnosis.
Does F-SENS OK appear on the display?
ÐGo to Step 9
On ERROR3,
Go to
Step 9
8Repair open fuel remainder pulse circuit (I-13±6 ~
E35±48).
Is the action complete?
ÐGo to Step 1Ð
9Press and release the CLOCK key (1 time only) to
begin gyro-sensor diagnosis.
Does GYRO OK appear on the display?
ÐGo to Step 11
On ERROR4,
Go to
Step 10
10Replace the MID control unit.
Is the action complete?
ÐGo to Step 1Ð
111. Press and release the CLOCK key (1 time only) to
begin vehicle speed sensor diagnosis.
2. Drive vehicle.
Does SPEED OK appear on the display?
ÐGo to Step 13
On ERROR5,
Go to
Step 12
12Repair open vehicle speed sensor circuit (I-13±15 ~
E43±3).
Is the action complete?
ÐGo to Step 1Ð
13Press and release ON/OFF key to return to start of
diagnosis screen.
Is the action complete?
ÐGo to Step 1Go to Step 14
14Press and release the SERVICE key.
Is the action complete?
ÐGo to Step 2Ð

8C±18ENTERTAINMENT
Symptom Diagnosis
MID Not Appears
StepActionValue(s)Ye sNo
1Is fuse (AUDIO 20A) normal?ÐGo to Step 2Replace fuse
2Remove connectors at display unit.
Is there battery voltage across terminal No. I-12±16
(display unit harness connector)?
12VGo to Step 4Go to Step 3
3Repair open circuit between terminal No. I-12±16
(display unit harness connector) and the battery.
Is the action complete?
ÐGo to Step 2Ð
4Move the ignition switch to the ACC position.
Is there battery voltage across terminal No. I-12±7
(display unit harness connector)?
12VGo to Step 6Go to Step 5
5Repair open circuit between terminal No. I-12±7
(display unit harness connector) and the battery.
Is the action complete?
ÐGo to Step 4Ð
6Move the starter switch to the IGN position.
Is there battery voltage across terminal No. I-12±14
(display unit harness connector)?
12VGo to Step 8Go to Step 7
7Repair open circuit between terminal No. I-12±14
(display unit harness connector) and the battery.
Is the action complete?
ÐGo to Step 6Ð
8Replace the display unit.
Is the action complete?
ÐGo to Step 1Ð