turn signal bulb ISUZU AXIOM 2002 Service Repair Manual

POWER±ASSISTED STEERING SYSTEM2A±7
Turn Signal Switch
This diagnosis covers mechanical problems only. Refer
to
Turn Signal Switch in Electrical section for electrical
diagnosis.
ConditionPossible causeCorrection
Turn Signal Will Not Stay In Turn
PositionForeign material or loose parts
preventing movement of yoke.Repair or replace signal switch.
Broken or missing detent or
canceling spring.Replace signal switch.
Turn Signal Will Not CancelLoose switch mounting screws.Tighten mounting screws.
Switch or anchor bosses broken.Replace turn signal switch.
Broken, missing or out of position
detent, return or canceling spring.Replace turn signal switch.
Worn canceling cam.Replace turn signal switch.
Turn Signal Difficult To OperateTurn signal switch arm loose.Tighten arm screw.
Broken or distorted yoke.Replace turn signal switch.
Loose or misplaced springs.Replace turn signal switch.
Foreign parts and/or material.Repair turn signal switch.
Loose turn signal switch mounting
screws.Tighten mounting screws.
Turn Signal Will Not Indicate Lane
ChangeBroken lane change pressure pad or
spring hanger.Replace turn signal switch.
Broken, missing or misplaced lane
change spring.Replace turn signal switch.
Base of wire damaged.Replace turn signal switch.
Hazard Switch Cannot Be Turned OffForeign material between hazard
switch to turn signal switch body.Repair or replace hazard switch.
No Turn Signal LightsElectrical failure in chassis harness.Refer to Electrical section.
Inoperative turn signal flasher unit.Replace flasher unit.
Loose chassis harness connector.Repair loose connector.
Front or Rear Turn Signal Lights Not
FlashingBurned-out or damaged turn signal
bulb.Replace bulb.
High resistance connection to
ground at bulb socket.Repair bulb socket.
Loose chassis harness connector.Repair loose connector.

4B1±4
DRIVELINE CONTROL SYSTEM
Functions of Indicator Lamp
TOD Switch and Indication of Drive Mode
The TOD switch sends signals to the TOD control unit
which selects drive modes and controls the shift on the fly
system (axle disconnect : ADC).
TOD
switch
tt
Drive modeTransfer shift conditionTransfer posi-
tion detectionShift on the flyTOD indicator
state
state4HSW4LSWAxle
SWADC circuit
2HRear-wheel
drive (RWD)Permissible during
driving (less than
100 km/h or 62 mph)OFFOFFOFFTurning on
electricity
TODElectronic
torque split
4WD (HIGH)
OFFOFFONTurning off
electricity
4WD (HIGH)
(TOD)AT: Neutral
Brake: Applied
Th t (l4LLow range
mechanical
direct 4WD
(LOW) (4L)The car stops (less
than 2 km/h or
1.2 mph and less than
1500 rpm)OFFONONTurning off
electricity
ADC: Shift on the fly
SW: Switch
Bulb check :The bulb of indicator lamp is checked for 2
seconds when ignition key is turned on.
Bulb Check
When the starter switch is turned on, the TOD indicator
lamps comes on as shown below.
NOTE: Once the starter switch is turned on, all the TOD
indicator lamps are lit for two seconds even if the transfer
lever is in any position.
C07RW016

DRIVE LINE CONTROL SYSTEM (TOD) 4B2±12
Indication During Transition of Shift Rod
When the TOD switch is turned, and the signals from the
AXLE switch do not comply with the signal conditions of
the 4H and 4L switch, the indicator lamp state selected on
the TOD switch and light-off mode are repeatedly output
at an interval of 1.0 second.NOTE: After the TOD switch is turned to the specified
position and the AXLE switch generates compliant
signals, the normal output status is returned.
C07R100010
Bulb Check
When the starter switch is turned on, the TOD indicator
lamps go on as shown below.NOTE: Once the starter switch is turned on, all the TOD
indicator lamps are lit for two seconds even if the TOD
switch is in any position.
C07RW016

4B2±13
DRIVE LINE CONTROL SYSTEM (TOD)
Simplified checking method of ABS IN and BRAKE ON signals:
In the event that any of the signal inputs listed below are
observed while the self-diagnostic code is being
displayed (the self-diagnostic connector is short-circuited
to GND), you can simply check the ABS IN and BRAKE
ON signals as shown in the figures below.
C07R200002
Check Lamp
Check Lamp Bulb Check
When the starter switch is turned on in the normal state,
the control unit turns on the CHECK lamp to check the
bulb.
C07RW019

6E±89
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
No Reduced Power Lamp (RPL)
060R200073
Circuit Description
The Reduced Power lamp (RPL) should always be
illuminated and steady with the ignition ªONº and the
engine stopped. Ignition feed voltage is supplied to the
RPL bulb through the meter fuse. The powertrain control
module (PCM) orders the RPL ªONº signal for Multiplex
Control Unit. When Multiplex Control Unit is received RPL
ªONº signal that turn RPL ªONº by grounding the RPL
driver circuit.
Diagnostic Aids
An intermittent RPL may be caused by a poor connection,
rubbed-through wire insulation, or a wire broken inside
the insulation. Check for the following items:

Inspect the PCM and Multiplex Control Unit harness
and connections for improper mating, broken locks,
improperly formed or damaged terminals, poor
terminal to wire connection, and damaged harness.

If the engine runs OK, check for a faulty light bulb, an
open in the MIL driver circuit, or an open in the
instrument cluster ignition feed.

If the engine cranks but will not run, check for an open
PCM ignition or battery feed, or a poor PCM to engine
ground.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.2. A ªNo RPLº condition accompanied by a no±start
condition suggests a faulty PCM ignition feed or
battery feed circuit.
9. Using a test light connected to B+, probe each of the
Multiplex Control Unit ground terminals to ensure
that a good ground is present. Refer to Multiplex
Control Unit Terminal End View for terminal
locations of the Unit Terminal End View for terminal
locations of the Multiplex Control Unit ground
circuits.
12.Using a test light connected to B+, probe each of
the PCM ground terminals to ensure that a good
ground is present. Refer to PCM Terminal End View
for terminal locations of the PCM ground circuits.
21.In this step, temporarily substitute a known good
relay for the PCM relay. The horn relay is nearby,
and it can be verified as ªgoodº simply by honking
the horn. Replace the horn relay after completing
this step.
24.This vehicle is equipped with a PCM which utilizes
an electrically erasable programmable read only
memory (EEPROM). When the PCM is replaced,
the new PCM must be programmed. Refer to PCM
Replacement and Programming Procedures in
Powertrain Control Module (PCM) and Sensors.

6E±93
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Reduced Power Lamp (RPL) ªONº Steady
060R200073
Circuit Description
The Reduced Power lamp (RPL) should always be
illuminated and steady with the ignition ªONº and the
engine stopped. Ignition feed voltage is supplied to the
RPL bulb through the meter fuse. The powertrain control
module (PCM) orders the RPL ªONº signal for Multiplex
Control Unit. When Multiplex Control Unit is received RPL
ªONº signal that turn RPL ªONº by grounding the RPL
driver circuit.
The RPL should not remain ªONº with the engine running
and no DTC(s) set. A steady RPL with the engine running
and no DTC(s) suggests a short to ground in the RPL
driver circuit.
Diagnostic Aids
An intermittent RPL may be caused by a poor connection,
rubbed through wire insulation, or a wire broken inside the
insulation. Check for the following items:
Poor connection or damaged harness ± Inspect the
PCM harness and connectors for improper mating,
broken locks, improperly formed or damaged
terminals, poor terminal to wire connection, and
damaged harness.
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
2. If the RPL does not remain ªONº when the Multiplex
Control Unit is disconnected, the RPL driver wiring
is not faulty.
3. If the RPL driver circuit is OK, the instrument panel
cluster is faulty.
10. This vehicle is equipped with a PCM which utilizes
an electrically erasable programmable read only
memory (EEPROM). When the PCM is replaced,
the new PCM must be programmed. Refer to PCM
Replacement and Programming Procedures in
Powertrain Control Module (PCM) and Sensors.

LIGHTING SYSTEM8A±1
AXIOM
BODY AND ACCESSORIES
CONTENTS
Lighting System 8A. . . . . . . . . . . . . . . . . . . . . . . . .
Wiper / Washer System 8B. . . . . . . . . . . . . . . . . .
Entertainment 8C. . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring System 8D. . . . . . . . . . . . . . . . . . . . . . . . . .
Meter and Gauge 8E. . . . . . . . . . . . . . . . . . . . . . . Body Structure 8F. . . . . . . . . . . . . . . . . . . . . . . . . .
Seats 8G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security and Locks 8H. . . . . . . . . . . . . . . . . . . . . .
Sunroof / Convertible Top 8I. . . . . . . . . . . . . . . .
Exterior / Interior Trim 8J. . . . . . . . . . . . . . . . . . . .
LIGHTING SYSTEM
CONTENTS
Service Precaution 8A±2. . . . . . . . . . . . . . . . . . . . . .
Headlight Bulb 8A±3. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight Assembly 8A±4. . . . . . . . . . . . . . . . . . . . .
Removal 8A±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight Adjustment 8A±4. . . . . . . . . . . . . . . . . .
Side Marker Light Bulb 8A±6. . . . . . . . . . . . . . . . . . .
Removal 8A±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight Bulb 8A±7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
License Plate Light Bulb 8A±8. . . . . . . . . . . . . . . . . .
Removal 8A±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stoplight Bulb 8A±8. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 8A±8. . . . . . . . . . . . . . .
High Mounted Stoplight Assembly 8A±9. . . . . . . . .
Removal 8A±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Mounted Stoplight Bulb 8A±9. . . . . . . . . . . . . .
Removal 8A±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backup Light Bulb 8A±10. . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Turn Signal Light Bulb 8A±10. . . . . . . . . . . . . .
Removal and Installation 8A±10. . . . . . . . . . . . . . .
Rear Turn Signal Light Bulb 8A±11. . . . . . . . . . . . . .
Removal 8A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dome Light Bulb 8A±11. . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . Map Light Bulb 8A±12. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy Light Bulb 8A±12. . . . . . . . . . . . . . . . . . . . . .
Removal 8A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage Room Light Bulb 8A±13. . . . . . . . . . . . . . . .
Removal 8A±13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lever Illumination Light Bulb (A/T) 8A±13. . . .
Removal 8A±13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vanity Mirror Illumination Light Bulb 8A±14. . . . . . . .
Removal 8A±14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Unit Assembly Illumination
Light Bulb (Power/Winter & Intelligent
Suspension Switch) 8A±14. . . . . . . . . . . . . . . . . . . . .
Removal 8A±14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOD Switch Illumination Light Bulb 8A±15. . . . . . . .
Removal 8A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control Main Switch Illumination
Light Bulb 8A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wiper and Washer Switch Illumination
Light Bulb 8A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Heater Switch Illumination Light Bulb 8A±16. .
Removal 8A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch 8A±17. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 8A±17. . . . . . . . . . . . . . .
Lighting Switch (Combination Switch) 8A±17. . . . . .

8A±10LIGHTING SYSTEM
Backup Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the rear combination light assembly.

Refer to
Taillight Bulb in this section.
3. Remove the bulb (1).

Remove the backup light socket by turning it
counterclockwise.

Pull out the bulb from the socket.
803R200007
Installation
To install, follow the removal steps in the reverse order.
Front Turn Signal Light Bulb
Removal and Installation
Refer to Side Marker Light Bulb in this section.

LIGHTING SYSTEM8A±11
Rear Turn Signal Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the rear combination light assembly.

Refer to
Taillight Bulb in this section.
3. Remove the bulb (1).

Remove the rear turn signal light socket by turning it
counterclockwise.

Remove the bulb by turning it counterclockwise
while pushing it at the same time.
803R200006
Installation
To install, follow the removal steps in the reverse order.
Dome Light Bulb
Removal
1. Disconnect the battery ground cable.
2. Remove the lens (2).
3. Remove the bulb (1).

Pull out the bulb.
825RW075
Installation
To install, follow the removal steps in the reverse order.

LIGHTING SYSTEM8A±21
Main Data and Specifications
Light and Bulb Specifications
801R200020
Legend
(1) High Mounted Stoplight
(2) Luggage Room Light
(3) Vanity Mirror Illumination Light
(4) Map Light
(5) Dome Light
(6) Meter(7) Front Turn Signal Light/Front Side Marker
Light/Parking Light
(8) Headlight
(9) Courtesy Light
(10) Taillight/Stoplight
(11) Backup Light
(12) Rear Turn Signal Light
(13) License Plate Light