Oil chart ISUZU AXIOM 2002 Service Manual PDF

7A±18
AUTOMATIC TRANSMISSION (4L30±E)
Chart 9c: Coastdown Harsh Shift Or Clunk At 3±2 Downshift
StepActionYe sNo
1Check line pressure. Refer to Line Pressure Test in this section.
Was line pressure normal?
Go to Step 2
Use Chart 15b:
Possible Causes
of High Line
Pressure in this
section
2Does DTC P1850 set?
Diagnose P1850
first
Replace band
apply solenoid
(PWM) (323)
Chart 10: Intermittent 4TH TO 2ND Gear Downshift At Steady Speed
StepActionYe sNo
1Check for consistent speed sensor reading with scan tool.
Was the reading correct?Replace mode
switch for
intermittent
contact.
Go to Step 2
21. Check for wiring harness damage or short to ground. If OK, go
to
(2).
2. Check transmission speed sensor connections. If OK, go to
(3).
3. Replace transmission speed sensor.
Was the replacement complete?
Ð
Replace speed
sensor.
Chart 11: Engine Flare At Shifting During Turning Only (Usually With Warm Engine)
StepActionYe sNo
1Check for oil leaks at transmission.
Was the problem found?Replace
transmission oil
filter and gasket
Ð
Chart 12: Engine Flare During 1±2 Or 2±3 Shift
StepActionYe sNo
1Check line pressure. Refer to Line Pressure Test in this section.
Was line pressure normal?
Go to Step 2
Use Chart 15a:
Possible Causes
of Low Line
Pressure in this
section
21. Check for a stuck 1±2 accumulator valve (320).
2. Check for servo piston (106) leaks.
3. Check for a stuck band apply solenoid (323).
Was line pressure normal?
Repair or replaceÐ

7A±19 AUTOMATIC TRANSMISSION (4L30±E)
Chart 13: Shudder Only During Torque Converter Clutch (TCC) Applying
StepActionYe sNo
11. TCC shudder is one of the most commonly misdiagnosed
conditions in an automatic transmission. The key to
diagnosing TCC shudder is to note when it happens and under
what conditions. Once the TCC has been fully applied, it is
nearly impossible to make it shudder. TCC shudder (short
burst of noise normally less than 1 second) will only occur
during clutch applying. It is not a steady state condition.
2. Drive until whole drivetrain is at normal operating temperature.
± On 4WD vehicles, the test must be performed with transfer
case selector lever in ª2Hº position.
± Shudder is a short burst of noise normally less than 1 second
in duration, and can be induced by the following maneuver:
3. From coast condition at 50 mph in ªDº range (Normal mode),
depress the throttle to 1/4-1/3 throttle. If present, shudder will
occur within 5 seconds together with TCC application.(The
scan tool may be used to determine the exact time of TCC
applying)
Was the problem found?
Replace
transmission fluid
and filter (remove
both pans) and
flush cooler lines.
Replace
converter
assembly and
O-ring on turbine
shaft
Perform
mechanical
inspection of
other drivetrain
components.
Chart 14: Possible Causes Of Transmission Noise
CAUTION: Before checking transmission for what
is believed to be transmission noise, ensure
presence and positioning of insulating plugs, pads
etc. Also make sure that noise does not come from
other drivetrain components.
Condition
Possible causeCorrection
Whine or BuzzOil level lowFill with ATF, check for external
leaks.
Plugged or restricted oil filterInspect oil filter.
Replace oil filter or ATF as necessary.
Damaged oil filter gasketReplace oil filter gasket.
Knocking noise from front of
transmission
Loose bolts (Converter to flex plate)Tighten to specifications.
transmission.Cracked or broken flex plateReplace flex plate.
Converter damagedReplace converter.
Knocking noise while driving, mostly
on acceleration.Transmission mount loose or brokenTighten mount bolts or replace
transmission mount.
Cooler line mounts loose or brokenTighten or replace cooler line
mounts.
Cooler lines touching body or frameRepair or replace as necessary.
Knocking noise when vehicle is
stationary
Loose flex plate mounting boltsTighten to specifications.
stationary.Cracked or broken flex plateReplace flex plate.
Damaged converterReplace converter.

7A±20
AUTOMATIC TRANSMISSION (4L30±E)
Chart 15a: Possible Causes of Low Line Pressure
StepActionYe sNo
1Check oil level.
Was the problem found?
Fill with ATFGo to Step 2
2Check for defective throttle position sensor.
Was the problem found?Replace throttle
position sensor
Go to Step 3
3Check for plugged, loose, or damaged oil filter (79).
Was the problem found?Inspect oil filter,
tighten bolts or
replace oil filter
(79)
Go to Step 4
4Check for a stuck force motor plunger (404). (Adapter case valve
body)
Was the problem found?Replace force
motor plunger
(404)
Go to Step 5
5Check for a stuck feed limit valve (412). (Adapter case valve body)
Was the problem found?Replace feed limit
valve (412)
Go to Step 6
6Check for loose converter bolts (4 & 5).
Was the problem found?Tighten converter
bolts (4 & 5)
Go to Step 7
7Check for a stuck pressure regulator valve (217). (Oil pump)
Was the problem found?Replace pressure
regulator valve
(217)
Go to Step 8
8Check for a stuck boost valve (213).(Oil pump)
Was the problem found?Replace boost
valve (213)
Go to Step 9
9Check for blocked intermediate oil passages to pressure
regulator valve. (Oil pump)
Was the problem found?
Replace oil pumpGo to Step 10
10Check for defective oil pump (9, 201, 202 & 228).
Was the problem found?
Replace oil pumpGo to Step 11
11Check for internal leaks.
± Check balls missing or out of location in valve bodies
± Seals cut or damaged
± Gaskets defective, etc.
Was the problem found?Install balls, or
correct ball
location
Replace seals
Replace gaskets
Ð

7A±21 AUTOMATIC TRANSMISSION (4L30±E)
Chart 15b: Possible Causes Of High Line Pressure
NOTE: If transmission is operating in backup mode, high
line pressure will be present.
Step
ActionYe sNo
1Check for defective throttle position sensor.
Was the problem found?Replace throttle
position sensor.
Go to Step 2.
2Check for a stuck force motor plunger (404). (Open
circuit/intermittent) (Adapter case valve body)
Was the problem found?Replace force
motor plunger
(404)
Go to Step 3
3Check for a stuck feed limit valve (412). (Adapter case valve body)
Was the problem found?Replace force
motor plunger
(412)
Go to Step 4
4Check converter bolts (4 & 5).
Was the problem found?Tighten converter
bolts (4 & 5)
Go to Step 5
5Check for a stuck pressure regulator valve (217). (Oil pump)
Was the problem found?Replace pressure
regulator valve
(217)
Go to Step 6
6Check for a stuck boost valve (213). (Oil pump)
Was the problem found?Replace boost
valve (213)
Go to Step 7
7Check for internal leaks.
± Check balls missing or out of location in valve bodies
± Seals cut or missing
± Gaskets defective, etc.
Was the problem found?Install balls, or
correct ball
location
Replace seals
Replace gaskets
Ð

7A±22
AUTOMATIC TRANSMISSION (4L30±E)
Chart 16: Possible Causes Of
Transmission Fluid Leaks
Before attempting to correct an oil leak, the actual source
of the leak must be determined. In many cases, the
source of the leak may be difficult to determine due to
ªwind flowº around the engine and transmission.
The suspected area should be wiped clean before in-
specting for the source of the leak.Oil leaks around the engine and transmission are gener-
ally carried toward the rear of the vehicle by the air
stream. In determining the source of an oil leak, the fol-
lowing two checks should be made:
1. With the engine running, check for external line
pressure leaks.
2. With the engine off, check for oil leaks due to the
raised oil level caused by drainback of converter oil
into the transmission.
Possible Causes Of Fluid Leaks Due To Sealing Malfunction
240RX008
Legend
(1) Electrical Connector (Main Case) Seal
(2) Transmission Vent (Breather)
(3) Speed Sensor O±Ring
(4) Extension (Adapter) Lip Seal
(5) Extension (Adapter) to Main Case Gasket
(6) Overfill and Oil Drain Screws Gasket
(7) Oil Pan Gasket (Main Case)
(8) Selector Shaft Seal(9) Oil Cooler Connectors (2)
(10) Oil Pan Gasket (Adapter Case)
(11) Converter housing attaching bolts not correctly
torqued
(12) Converter Housing Lip Seal
(13) Line Pressure Tap Plug
(14) Electrical Connector (Adapter Case) Seal
(15) Adapter Case Seal Rings (2)

7A±63 AUTOMATIC TRANSMISSION (4L30±E)
33. Install fourth clutch retainer (31) with the notch facing
up and positioned towards valve body surface.
252RW004
34. Overdrive clutch end play measurement
1. Install the J±23085±A selective washer gauging
tool on the adapter case flange and against the
input shaft.
2. Position the inner shaft of the tool against the
thrust surface of the overrun clutch housing.
3. Tighten thumb screw. Remove the tool.
4. Measure gap. Select appropriate size washer as
shown in the chart.
5. Set selective thrust washer aside.
Selective Thrust Washer
Gap: mm(in)Color
1.53 ± 1.63 (0.060 ± 0.064)Yellow
1.72 ± 1.82 (0.068 ± 0.072)Red
1.91 ± 2.01 (0.075 ± 0.079)Black
2.10 ± 2.20 (0.083 ± 0.087)Natural
2.29 ± 2.39 (0.090 ± 0.094)Green
2.48 ± 2.58 (0.098 ± 0.102)Blue
FOLLOWING THE PROCEDURE SHOULD
RESULT IN FINAL END±PLAY FROM 0.1 mm TO
0.8 mm (0.004 in TO 0.03 in)
252RS005
252RS006
35. Install selective washer (32).
NOTE: Use petroleum jelly to hold selective washer in
place.
36. Install gasket (33).
37. Install converter housing and oil pump assembly (34)
to adapter case.

Fit and tighten seven outer 13 mm screws.
Torque: 39 Nwm (29 lb ft)

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±23
Intermittent Conditions
If the Tech 2 displays a diagnostic trouble code as
intermittent, or if after a test drive a DTC does not
reappear though the detection conditions for this DTC are
present, the problem is most likely a faulty electrical
connection or loose wiring. Terminals and grounds should
always be the prime suspect. Intermittents rarely occur
inside sophisticated electronic components such as the
PCM.
Use the DTC information to understand which wires and
sensors are involved.
When an intermittent problem is encountered, check
suspect circuits for:
1. Poor terminal to wire connection.
2. Terminals not fully seated in the connector body
(backed out).
3. Improperly formed or damaged terminals.
4. Loose, dirty, or corroded ground connections:
HINT: Any time you have an intermittent in more than
one circuit, check whether the circuits share a
common ground connection.5. Pinched or damaged wires.
6. Electro±Magnetic Interference (EMI):
HINT: Check that all wires are properly routed away
from coil, and generator. Also check for improperly
installed electrical options, such as lights, 2±way
radios, etc.
Use the F2: SNAPSHOT mode of the Tech 2 to help
isolate the cause of an intermittent fault. The snapshot
mode will record information before and after the problem
occurs. Set the snapshot to ªtriggerº on the suspect DTC.
If you notice the reported symptom during the test drive,
trigger the snapshot manually.
After the snapshot has been triggered, command the
Tech 2 to play back the flow of data recorded from each of
the various sensors. Signs of an intermittent fault in a
sensor circuit are sudden unexplainable jump in data
values out of the normal range.
Transmission And PCM Identification
The chart below contains a list of all important information
concerning rear axle ratio, Powertrain Control Module
(PCM), and transmission identification.
VEHICLE
Rr axlePCMTRANSMISSION
TypeEngine
Rr axle
RatioISUZU Parts No.Calibration
CodeIsuzu Part No.Model Code
Isuzu /35LV64 3008±97287±830±0G268±96023±779±0YB (4y4)
Axiom3.5L V64.3008±09389±969±0G268±96024±169±0YE (4y2)
240R200001

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±79
DTC P1860 TCC PWM Solenoid Electrical
D07R200011
Circuit Description
The PCM allows current to flow through the solenoid coil
according to the duty cycle (percentage of ªonº and ªoffº
time). This current flow through the solenoid coil creates
a magnetic field that magnetizes the solid core. The
magnetized core attracts the check ball to seat against
spring pressure. This blocks the exhaust for the TCC
signal fluid and allows 2±3 drive fluid to feed to TCC signal
circuit.The TCC signal fluid pressure acts on the TCC
regulator valve to regulate line pressure and to apply fluid
pressure to the torque converter clutch shift control valve.
When the TCC shift valve is in the apply position,
regulated apply fluid pressure is directed through the TCC
valve to apply the torque converter clutch. The TCC
PWM solenoid is used in conjunction with the TCC PWM
solenoid to regulate fluid to the torque converter. The
TCC PWM solenoid is attached to the valve body within
the transmission.
This DTC detects a continuous open or short to ground or
ignition in the TCC circuit or the TCC PWM solenoid. This
is a type ªBº DTC.
Conditions For Setting The DTC

Battery voltage is between 10 and 16 volts.

No shift solenoid A DTCs P0751 or P0752 or P0753.

No shift solenoid B DTCs P0756 or P0757 or P0758.

Ignition is ªonº, Engine ªrunº.

The PCM commands the solenoid ªonº and the
voltage remains low (zero volts).

The PCM commands the solenoid ªoffº and the
voltage remains high (B+).

All conditions met for 0.875 ~ 1.25 seconds.
Action Taken When The DTC Sets

Inhibit TCC engagement.
For lamp illuminate refer to
DTC type definition (type
B).
Conditions For Clearing The MIL/DTC

The PCM will turn off the MIL and CHECK TRANS
Lamp after three consecutive ignition cycles without a
failure reported.

The DTC can be cleared from the PCM history by
using a scan tool.

The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.

The PCM will cancel the DTC default actions when
the fault no longer exists and the ignition is cycled ªoffº
long enough to power down the PCM.
Diagnostic Aids

Inspect the wiring for poor electrical connections at
the PCM and at the transmission connector. Look for
possible bent, backed out, deformed or damaged
terminals. Check for weak terminal tension as well.
Also check for a chafed wire that could short to bare
metal or other wiring. Inspect for a broken wire inside
the insulation.

When diagnosing for a possible intermittent short or
open condition, move the wiring harness while
observing test equipment for a change.
Test Description
The numbers below refer to the step numbers on the
diagnostic chart
:
3. This test checks for voltage to the solenoid.
4. This test checks the ability of the PCM and wiring to
control the ignition circuit.
9. This test checks the resistance of the TCC solenoid
and the internal wiring harness.

SUPPLEMENTAL RESTRAINT SYSTEM9J±1
AXIOM
RESTRAINTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
CONTENTS
Service Precaution 9J±2. . . . . . . . . . . . . . . . . . . . . .
General Description 9J±2. . . . . . . . . . . . . . . . . . . . .
Restraint Devices 9J±2. . . . . . . . . . . . . . . . . . . . . .
System Description 9J±3. . . . . . . . . . . . . . . . . . . .
SRS Component and Wiring Location View 9J±4
Component Description 9J±4. . . . . . . . . . . . . . . . . .
SDM (Sensing and Diagnostic Module) 9J±4. . .
ªAir Bagº Warning Lamp 9J±5. . . . . . . . . . . . . . . .
SRS Coil Assembly 9J±5. . . . . . . . . . . . . . . . . . . .
Air Bag Assemblies 9J±5. . . . . . . . . . . . . . . . . . . .
Steering Column 9J±6. . . . . . . . . . . . . . . . . . . . . .
Knee Bolster 9J±6. . . . . . . . . . . . . . . . . . . . . . . . . .
Definition 9J±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis 9J±7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Codes 9J±7. . . . . . . . . . . . . .
Scan Tool Diagnostics 9J±7. . . . . . . . . . . . . . . . . .
Use of Special Tools 9J±8. . . . . . . . . . . . . . . . . . .
SRS Connector Body Face Views 9J±8. . . . . . . . .
Repairs and Inspections Required After an
Accident 9J±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accident With Deployment ± Component
Replacement and Inspections 9J±9. . . . . . . . . .
Accident With or Without
DeploymentÐComponent Inspection 9J±9. . . .
SDM Replacement Guidelines 9J±9. . . . . . . . . .
Wiring Damage 9J±9. . . . . . . . . . . . . . . . . . . . . . .
SRS Connector (Plastic Body And
Terminal Metal Pin) Damage 9J±9. . . . . . . . . . .
SRS Wire Pigtail Damage 9J±9. . . . . . . . . . . . . .
On±Vehicle Service 9J±9. . . . . . . . . . . . . . . . . . . . . .
Service Precautions 9J±9. . . . . . . . . . . . . . . . . . .
Disabling The SRS 9J±9. . . . . . . . . . . . . . . . . . . .
Enabling The SRS 9J±9. . . . . . . . . . . . . . . . . . . . .
Handling / Installation / Diagnosis 9J±10. . . . . . . .
Air Bag Assembly Handling / Shipping
/ Scrapping 9J±10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Live (Undeployed) Air Bag Assembly 9J±10. . . . .
Air Bag Assembly Shipping Procedure For
Live (Undeployed) Air Bag Assemblies 9J±11. . .
Deployed Air Bag Assembly 9J±11. . . . . . . . . . . .
Air Bag Assembly Scrapping Procedure 9J±11. .
Deployment Outside Vehicle
(Driver Air Bag Assembly) 9J±11. . . . . . . . . . . . . .
Deployment Outside Vehicle
(Passenger Air Bag Assembly) 9J±13. . . . . . . . . Deployment Inside Vehicle
(Vehicle Scrapping Procedure) 9J±15. . . . . . . . . .
Deployed Air Bag Assembly Handling 9J±18. . . .
Special Tools 9J±18. . . . . . . . . . . . . . . . . . . . . . . . . . .
J±41433 SRS Driver/Passenger Load Tool 9J±18
J±39200 DVM 9J±19. . . . . . . . . . . . . . . . . . . . . . . . .
Scan Tool 9J±19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J±35616±A Connector Test Adapter Kit 9J±19. . .
J±42986 SRS Deployment Tool 9J±19. . . . . . . . .
J±42987 SRS Adapter For Load Tool 9J±20. . . . .
J±41497 SRS Deployment Fixture 9J±20. . . . . . .
Tech 2 Scan Tool 9J±21. . . . . . . . . . . . . . . . . . . . . .
DTC Modes 9J±24. . . . . . . . . . . . . . . . . . . . . . . . . . .
Plottong Snapshot Graph 9J±24. . . . . . . . . . . . . . . . .
Plotting Graph Flow Chart (Plotting graph
after obtaining vehicle information) 9J±25. . . . . .
Flow Chart for Snapshot Replay
(Plotting Graph) 9J±26. . . . . . . . . . . . . . . . . . . . . . .
Service Precaution 9J±27. . . . . . . . . . . . . . . . . . . . . .
Disabling The SRS 9J±27. . . . . . . . . . . . . . . . . . . .
Enabling The SRS 9J±27. . . . . . . . . . . . . . . . . . . . .
Handling / Installation / Diagnosis 9J±27. . . . . . . .
Inspections Required After An Accident 9J±27. .
Sensing and Diagnostic Module (SDM) 9J±28. . . .
Service Precautions 9J±28. . . . . . . . . . . . . . . . . . .
Removal 9J±28. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J±29. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driver Air Bag Assembly 9J±29. . . . . . . . . . . . . . . . .
Service Precautions 9J±29. . . . . . . . . . . . . . . . . . .
Removal 9J±29. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J±30. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Wheel 9J±30. . . . . . . . . . . . . . . . . . . . . . . . .
Service Precautions 9J±30. . . . . . . . . . . . . . . . . . .
Removal 9J±30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J±31. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS Coil Assembly 9J±32. . . . . . . . . . . . . . . . . . . . . .
Service Precaution 9J±32. . . . . . . . . . . . . . . . . . . .
Removal 9J±32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J±32. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Column 9J±34. . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution 9J±34. . . . . . . . . . . . . . . . . . . .
Removal 9J±34. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 9J±35. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passenger Air Bag Assembly 9J±36. . . . . . . . . . . . .
Service Precaution 9J±36. . . . . . . . . . . . . . . . . . . .

SUPPLEMENTAL RESTRAINT SYSTEM9J±27
Service Precaution
CAUTION: When fasteners are removed, always
reinstall them at the same location from which they
were removed. If a fastener needs to be replaced, use
the correct part number fastener for that application.
If the correct part number fastener is not available, a
fastener of equal size and strength (or stronger) may
be used. Fasteners that are not reused, and those
requiring thread locking compound will be called
out. The correct torque value must be used when
installing fasteners that require it. if the above
conditions are not followed, parts or system damage
could result.
WARNING: WHEN PERFORMING SERVICE ON OR
AROUND SRS COMPONENTS OR SRS WIRING,
FOLLOW THE PROCEDURES LISTED BELOW TO
TEMPORARILY DISABLE THE SRS. FAILURE TO
FOLLOW PROCEDURES COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY OR OTHERWISE UNNEEDED SRS REPAIRS.
The SDM in Driver±Passenger SRS can maintain
sufficient voltage to cause a deployment for up to 15
seconds after the ignition switch is turned ªOFF,º the
battery is disconnected, or the fuse powering the SDM is
removed.
Many of the service procedures require removal of the
ªSRS±1º fuse, and disconnection of the air bag assembly
from the deployment loop to avoid an accidental
deployment. If the air bag assembly is disconnected from
the deployment loop as noted in the ªDisabling the SRSº
procedure that follows, service can begin immediately
without waiting for the 15 second time period to expire.
Disabling The SRS
Removal
Turn the ignition switch to ªOFFº and turn the steering
wheel so that the vehicle's wheels are pointing straight
ahead.
1. Remove SRS fuse SRS±1, from left dash side lower
fuse block or disconnect battery.
2. Disconnect yellow 2±pin connector at the base of
steering column.
3. Remove glove box assembly; Refer to ªPassenger
Air Bag Assembly Replacementº in this section.
4. Disconnect passenger air bag assembly yellow 2±pin
connector behind the glove box assembly.
CAUTION: With the ªSRS±2º fuse removed and
ignition switch ªON,º the ªAIR BAGº warning lamp
will be ªON.º This is normal operation and does not
indicate an SRS malfunction.
Enabling The SRS
Installation
Turn ignition switch to ªLOCKº and remove key.
1. Connect yellow 2±pin connector passenger air bag
assembly.
2. Install glove box assembly, Refer to ªPassenger Air
Bag Assembly Replacementº in this section.3. Connect yellow 2±pin connector at the base of the
steering column.
4. Install ªAIR BAGº fuse SRS±1 to left dash side lower
fuse block or connect battery.
Turn ignition switch to ªONº and verify that the ªAIR BAGº
warning lamp flashes seven times and then turns ªOFFº If
it does not operate as described, perform the ªSRS
Diagnostic System Checkº in section 9J±2.
Handling / Installation / Diagnosis
1. Air bag assembly should not be subjected to
temperatures above 65
C (150
F).
2. Air bag assembly, and SDM should not be used if they
have been dropped from a height of 100 centimeters
(3.28 feet) or more.
3. When a SDM is replaced, it must be oriented with the
arrow on the SDM pointing toward the front of the
vehicle. It is very important for the SDM to be located
flat on the mounting surface, parallel to the vehicle
datum line. It is important that the SDM mounting
surface is free of any dirt or other foreign material.
4. Do not apply power to the SRS unless all components
are connected or a diagnostic chart requests it, as this
will set a diagnostic trouble code.
5. The ªSRS Diagnostic System Checkº must be the
starting point of any SRS diagnostics. The ªSRS
Diagnostic System Checkº will verify proper ªAIR
BAGº warning lamp operation and will lead you to the
correct chart to diagnose any SRS malfunctions.
Bypassing these procedures may result in extended
diagnostic time, incorrect diagnosis, and incorrect
parts replacements.
Inspections Required After An Accident
CAUTION: C e r t a i n S R S c o mponents must be
replaced after a frontal crash involving air bag
deployment.
In all types of accidents regardless of ªAir Bagº
deployment, visually inspect all of the following
components and replace as required:
Ð Driver air bag assembly
Ð Passenger air bag assembly
Ð Steering wheel
Ð SRS coil assembly
Ð Steering column
Ð Knee bolster and instrument panel mounting
attachments
Ð Driver seat and belt
Ð Passenger seat and belt
Ð SDM
SDM always should be checked according to ªSDM
Replacement Guidelinesº.
CAUTION: Refer to ªSDM replacement Guidelinesº
below for important information on SDM
replacement in both deployment and
non±deployment crashes.
Inspect SRS coil assembly wiring and steering wheel for
any signs of scorching, meting, or damage due to
excessive heat. If coil assembly wire or steering wheel is