ISUZU AXIOM 2002 Service Repair Manual

9J1±41
RESTRAINT CONTROL SYSTEM
DTC 53 Deployment Commanded With Deployment Loop Fault Or Energy
Reserves Out Of Range
D09R200001
Circuit Description:
The SDM contains a sensing drive which converts vehicle
velocity changes to an electrical signal. The electrical
signal generated is processed by the SDM and then
compared to a value stored in memory. When the
generated signal exceeds the stored value, the SDM will
cause current to flow through the air bag assembly
deploying the air bags. DTC 53 is set accompanying with
DTC 51 when a deployment occurs while an air bag
assembly circuit fault is present that could possible result
in a no deployment situation in one or both air bag
assemblies.
DTC Will Set When:
The SDM detects a frontal crash, up to 30 degrees off the
centerline of the vehicle, of sufficient force to warrant
deployment of the air bags and an inflator circuit fault is
present.
Action Taken:
SDM turns ªONº the ªAIR BAGº warning lamp records
ªCrash Dataº, and sets a diagnostic trouble code.
DTC Will Clear When:
The SDM is replaced. If DTC 53 is set, one or more DTCs
will be set in addition to DTC 53. Malfunction(s) setting
DTC(s) (other than DTC 71) must be repaired so that
DTC(s) will not be set when a new SDM is installed.
DTC Chart Test Description:
Number(s) below refer to step number(s) on the
diagnostic chart:
2. If air bag assembly has not deployed, DTC 53 may
have falsely set.
3. If DTC 53 has set with no signs of frontal impact, the
diagnostic trouble code has falsely set.

RESTRAINT CONTROL SYSTEM 9J1±42
DTC 53 Deployment Commanded With Deployment Loop Fault Or Energy Reserves Out
Of Range
WARNING:DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SENSING AND
DIAGNOSTIC MODULE (SDM). NEVER STRIKE OR JAR THE SDM. NEVER POWER UP THE SRS WHEN THE
SDM IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SDM AND MOUNTING BRACKET FASTENERS MUST
BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT OF THE VEHICLE
TO ENSURE PROPER OPERATION OF THE SRS. THE SDM COULD BE ACTIVATED WHEN POWERED WHILE
NOT RIGIDLY ATTACHED TO THE VEHICLE WHICH COULD CAUSE DEPLOYMENT AND RESULT IN
PERSONAL INJURY.
Step
ActionYe sNo
1Was the ªSRS Diagnostic System Checkº performed?
Go to Step 2
Go to the ªSRS
Diagnostic
System Check.º
2Ignition switch ªOFF.º
Have air bag assemblies deployed?Replace
components and
perform
inspections as
directed in
ªrepairs and
inspections
required after an
accidentº in this
section.
Clear diagnostic
trouble codes.
Repeat the ªSRS
Diagnostic
System Check.º
Go to Step 3
3Inspect front of vehicle and undercarriage for signs of impact.
Were signs of impact found?Replace
components and
perform
inspections as
directed in
ªrepairs and
inspections
required after an
accidentº in this
section.
Clear diagnostic
trouble codes.
Repeat the ªSRS
Diagnostic
System Check.º
Ignition switch
ªOFF.º
Replace SDM.
Reconnect all
SRS system
components,
ensure all
components are
properly
mounted.
Repeat the ªSRS
Diagnostic
System Check.º

9J1±43
RESTRAINT CONTROL SYSTEM
DTC 61 Warning Lamp Circuit Failure
D09R200001
Circuit Description:
When the ignition switch is turned ªONº, battery voltage is
applied to the ªAIR BAGº warning lamp and to the ªignition
1º input terminal ª12º. The SDM responds by flashing the
ªAIR BAGº warning lamp seven times. The SDM
monitors the lamp driver output by comparing the output
state at ªSRS warning lampº terminal ª7º to the
microprocessor commanded state. When ªignition 1º is in
the specified value, and the output state Does not match
the commanded state of the lamp driver for 500
milliseconds, DTC 61 is set.
DTC Will Set When:
ªIgnition 1º voltage is in the specified value and the output
state at the ªSRS warning lampº terminal does not matchthe commanded state of the lamp driver for 500
milliseconds. This test is run every 100 milliseconds
during ªContinuous Monitoringº tests and once per each
ignition cycle at the beginning.
Action Taken:
SDM attempts to turn ªONº the ªAIR BAGº warning lamp
and sets a diagnostic trouble code.
DTC Will Clear When:
The ignition switch is turned ªOFF.º
Diagnostic Aids:
Refer to Charts B and C to diagnose warning lamp circuit
malfunctions.

RESTRAINT CONTROL SYSTEM 9J1±44
DTC 61 Warning Lamp Circuit Failure
StepActionYe sNo
1Was the ªSRS Diagnostic System Checkº performed?
Go to Step 2
Go to the ªSRS
Diagnostic
System Check.º
21. Malfunctions within the ªAIR BAGº warning lamp circuitry will
set this diagnostic trouble code.
2. These malfunctions are addressed in the ªSRS Diagnostic
System Checkº via Chart B and Chart C.
3. Failure to properly perform the ªSRS Diagnostic System
Checkº may result in misdiagnosis.
4. Ignition switch ªON.º
5. Clear SRS diagnostic trouble codes.
Is DTC 61 SET?
Ignition switch
ªOFF.º
Go to
Chart A .
Repeat the ªSRS
Diagnostic
System Check.º

9J1±45
RESTRAINT CONTROL SYSTEM
DTC 71 Internal SDM Fault
D09R200001
Circuit Description:
DTC 71 is an indication of a potential internal SDM
malfunction and will set if any of the following conditions
are detected:
1) Deployment or microprocessor energy reserve failure.
2) EEPROM failure.
3) ROM failure.
4) RAM failure.
5) Calibration check sum failure.
6) Deployment switch faults.
7) Accelerometer fault.
8) Arming sensor fault.
9) Diagnostic current faults.
10) DTC 19
11) DTC 25
12) DTC 51
13) DTC 53
DTC Will Set When:
Any of the above indicated malfunctions are detected by
the SDM. The malfunctions described above are tested
mainly during ªContinuous Monitoringº and some ones
run each ignition cycle.
Action Taken:
SDM turns ªONº the ªAIR BAGº warning lamp and sets a
diagnostic trouble code.
DTC Will Clear When:
A scan tool ªClear Codesº commanded is received by the
SDM. Some of the indicated malfunctions will only allow
the ªAIR BAGº warning lamp to go out.
But when DTC 19, 25, 51, 53 are also set, SDM is
Replaced.

RESTRAINT CONTROL SYSTEM 9J1±46
DTC 71 Internal SDM Fault
WARNING: DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SENSING AND
DIAGNOSTIC MODULE (SDM). NEVER STRIKE OR JAR THE SDM. NEVER POWER UP THE SRS WHEN THE
SDM IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SDM AND MOUNTING BRACKET FASTENERS MUST
BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT OF THE VEHICLE
TO ENSURE PROPER OPERATION OF THE SRS. THE SDM COULD BE ACTIVATED WHEN POWERED WHILE
NOT RIGIDLY ATTACHED TO THE VEHICLE WHICH COULD CAUSE DEPLOYMENT AND RESULT IN
PERSONAL INJURY.
CAUTION: When DTC 19 or 25 or 51 or 53 has been set it is necessary to Replace the SDM. Setting DTC 19 and
25 or 51 or 53 will also cause DTC 71 to set. When a scan tool ªCLEAR CODESº command is issued and the
malfunction is no longer present, DTC 51 or 53 and DTC 71 will remain current. Ensure that the short to voltage
condition DTC 19, 25 is repaired prior to installing a Replacement SDM to avoid damaging the SDM.
Step
ActionYe sNo
1Was the ªSRS Diagnostic System Checkº performed?
Go to Step 2
Go to the ªSRS
Diagnostic
System Check.º
2Confirm SRS ªDiagnostic System Check.º
Is DTC 19 or 25 or 51 or 53 also set (current or history)? (Refer to
notice above).Go to DTC 19 if
DTC 19 is set.
Go to
DTC 25 if
DTC 25 is set.
Go to
DTC 51 if
DTC 51 is set.
Go to
DTC 53 if
DTC 53 is set.
Ignition switch
ªOFF.º
Replace SDM.
Repeat the ªSRS
Diagnostic
System Check.º

10A±1
CRUISE CONTROL SYSTEM
AXIOM
CONTROL SYSTEM
CRUISE CONTROL SYSTEM
CONTENTS
Service Precaution 10A±1. . . . . . . . . . . . . . . . . . . . . .
General Description 10A±1. . . . . . . . . . . . . . . . . . . . .
Brake Switch 10A±2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 10A±2. . . . . . . . . . . . . . .
Adjustment 10A±2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Powertrain Control Module (PCM) 10A±3. . . . . . . . .
Removal and Installation 10A±3. . . . . . . . . . . . . . .
Mode Switch 10A±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal and Installation 10A±3. . . . . . . . . . . . . . .
Cruise Control Main Switch 10A±3. . . . . . . . . . . . . . .
Removal 10A±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 10A±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control Switch (Combination Switch) 10A±3
Removal and Installation 10A±3. . . . . . . . . . . . . . .
Diagnosis 10A±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
The cruise control keeps the vehicle running at a fixed
speed until a signal canceling this fixed speed is received.
When the main switch ªAUTO CRUISEº is turned on with
the vehicle in the running mode, the battery voltage is
applied to the PCM. When a signal from the control
switch is input to the PCM while the vehicle is in this state,
the cruise control system is activated. Also, while the
system is operating, the ªAUTO CRUISEº indicator light in
the meter assembly lights up.
1 . SET/COAST Switch Function
1.Set Function: When the SET/COAST switch is
pressed and released with the main switch on, the
speed at which the vehicle is running at that moment
is stored in the memory, and the vehicle automatically
runs at the speed stored.
2.Coast±Down Function: When the SET/COAST
switch is kept on while the vehicle is running, the
vehicle decelerates during that time. The speed at
which vehicle is running when the control switch is
turned off is stored in the memory, and the vehicle
automatically returns to the stored speed.
3.Tap±Down Function: When the SET/COAST
switch is turned on and off instantaneously while the
vehicle is running, the vehicle decelerates a mile for
each on/off operation. The vehicle speed at which the
vehicle was running when the SET/COAST was
turned off last is stored in the memory, and the vehicle
automatically returns to this stored speed.

10A±2
CRUISE CONTROL SYSTEM
2 . RESUME/ACCEL Switch Function
1.Resume Function: When the RESUME, ACCEL
switch is turned on/off after the system is temporarily
deactivated by pressing the brake or clutch pedal
while the vehicle is running, the vehicle resumes, the
speed stored before the system was released.
2.Accelerate Function: When the RESUME/ACCEL
switch is kept on after the system is released
completely, the vehicle accelerates its speed during
that time. The vehicle speed at which the vehicle was
running when the switch was turned off is stored in the
memory, and the vehicle automatically returns to this
speed.
3.Tap±Up Function: When the RESUME/ACCEL
switch is turned on and off instantaneously while the
vehicle is running, the vehicle accelerates a mile for
each on/off operation. The vehicle speed at which the
vehicle was running when the switch was turned off
last is stored in the memory, and the vehicle
automatically returns to this stored speed.
3 . CANCEL Function
1.Temporary Cancellation:

When the cancel switch is turned on.

When the brake pedal is pressed.

When the clutch pedal is pressed. (M/T)

When the select lever is shifted to any position other
than ªDº, ª3º, ª2º or ªLº. (A/T)

When the vehicle speed has decreased about 12.5
mph (20 km/h) or more than the stored speed.

When the vehicle speed gets lower than 22.5 mph
(36 km/h).
2.Complete Cancellation:

When the starter switch or the main switch is turned
off.

When the failsafe function is activated.
Brake Switch
Removal and Installation
Refer to the Brake Pedal Replacement in Brake section.
Adjustment
1. Check that the brake pedal (3) is fully returned by
pedal return spring.
2. Disconnect the switch connector.
3. Loosen the lock nut (2).
4. Rotate the brake switch (1) by hand until push rod
disappears from brake switch tip (4).
5. Return the brake switch by a half turn.
6. Tighten the lock nut.
7. Connect the switch connector.
310RS028

10A±3
CRUISE CONTROL SYSTEM
Powertrain Control Module (PCM)
Removal and Installation
Refer to Powertrain Control Module (PCM) in Engine
section.
Mode Switch
Removal and Installation
Refer to Mode Switch removal and installation steps in
Automatic Transmission section.
Cruise Control Main Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the meter cluster assembly (1).

Refer to
Instrument Panel Assembly in Body
Structure section.
3. Remove the cruise control main switch (2).

Disconnect the switch connector.

Push the lock from the back side of the instrument
panel cluster assembly.
825R100019
Installation
To install, follow the removal steps in the reverse order.
Cruise Control Switch (Combination Switch)
Removal and Installation
Refer to Lighting Switch (Combination Switch) removal
and installation steps in Lighting System section.

10A±4
CRUISE CONTROL SYSTEM
Diagnosis
Cruise control system is controlled by the PCM as well as
6VE1 engine and automatic transmission. DTC codes are
stored in the PCM if troubles occur in the circuit. DTC
codes categorized ªtype Dº are shown only by the Tech 2
scan tool. The following chart only shows some typical
DTCs for cruise control system. Refer to
PCM Diagnostic
Trouble Codes in Driveability and Emissions for entire
DTC diagnosis.
DTCTROUBLE
PARTDTC
TYPEMAJOR CONDITION OF
TROUBLEDIAGNOSIS PERIOD
P0565CRUISE MAIN
CIRCUITD
THE SWITCH CONTACT
REMAINS ON FOR 15
SECONDS OR MORE.

NOISES ARE GENERATED
BY THE POOR SWITCH
CONTACT 60 TIMES WITHIN
1 SECOND.DIAGNOSIS IS ENABLED IN
130 SECONDS AFTER THE
SWITCH OPERATED.
P0566CRUISE CAN-
CEL CIRCUITD
THE SWITCH CONTACT
REMAINS ON FOR 40
SECONDS OR MORE.DIAGNOSIS IS ENABLED IN
120 SECONDS AFTER THE
SWITCH OPERATED.
P0567CRUISE RE-
SUME CIRCUITD
THE SWITCH CONTACT
REMAINS ON FOR 50
SECONDS OR MORE.

NOISES ARE GENERATED
BY THE POOR SWITCH
CONTACT 100 TIMES
WITHIN 1.6 SECONDS.DIAGNOSIS IS ENABLED IN
110 SECONDS AFTER THE
SWITCH OPERATED.
P0568CRUISE SET
CIRCUITD
THE SWITCH CONTACT
REMAINS ON FOR 120
SECONDS OR MORE.

NOISES ARE GENERATED
BY THE POOR SWITCH
CONTACT 100 TIMES
WITHIN 1.6 SECONDS.DIAGNOSIS IS ENABLED IN
125 SECONDS AFTER THE
SWITCH OPERATED.
DTC: Diagnostic Trouble Code
NOTE: The DTCs are detected while the engine is
running.