Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1693

SUPPLEMENTAL RESTRAINT SYSTEM

9J–29

SDM Replacement Guidelines

1. In case that the air bag has been deployed, replace

the SDM.

2. When DTC 51, 53 and 71 are set.
3. When SDM fell down from a 100 cm (3.3 feet) height.

All the above information are SDM replacement
Guidelines.
Inspection is needed also on the following.

Inspect Supplemental Restraint System (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 damaged replace
them. The steering column and wheel must be
dimensionally checked to determine if they are damaged.
Never use SRS parts from another vehicle. This does not
include remanufactured parts purchased from an
authorized Retailer they may be used for SRS repairs. Do
not attempt to repair the SDM, the SRS harness, the SRS
coil assembly, the air bag assembly, the steering wheel,
or the steering column. Service of these items is
replacement only.
Verify replacement part numbers.

CAUTION: Proper operation of the Sensing and
Diagnostic Module (SDM) and Supplemental
Restraint System (SRS) requiring that any repairs
made relating to the vehicle structure must be done
according to the original production configuration.

SUPPLEMENTAL RESTRAINT SYSTEM

9J–30

Sensing and Diagnostic Module (SDM)

Service Precautions

WARNING: DURING SERVICE PROCEDURES, BE
VERY CAREFUL WHEN HANDLING SDM. NEVER
STRIKE OR JAR SDM.  UNDER SOME
CIRCUMSTANCES, IT COULD CAUSE
DEPLOYMENT AND RESULT IN PERSONAL INJURY
OR IMPROPER OPERATION OF THE
SUPPLEMENTAL RESTRAINT SYSTEM (SRS). SDM
MOUNTING BRACKET BOLTS MUST BE
CAREFULLY TORQUED TO ASSURE PROPER
OPERATION. THE SRS SHOULD ONLY BE
CONNECTED TO A POWER SOURCE WHEN IT IS
INSTALLED SECURELY IN THE VEHICLE. THE SDM
MAY SUDDENLY DEPLOY THE AIRBAGS CAUSING
PERSONAL INJURY

WARNING: PROPER OPERATION OF THE SENSING
AND DIAGNOSTIC MODULE (SDM) REQUIRES THE
SDM TO BE SECURELY INSTALLED ON THE
VEHICLE AND THE ARROW ON THE SENSOR MUST
BE POINTING TOWARD THE FRONT OF THE
VEHICLE.

SDM is specifically calibrated and is keyed to the SDM
location SRS wiring harness. Caution should be used to
ensure proper location of the SDM. The keying of the
SDM to its location and wiring harness connectors should
never be modified in the field.

Removal

1. Disable the SRS. (Refer to “Disable the SRS” in this

manual)

2. Remove dressing panel around the radio and

disconnect cigar lighter harness.

3. Remove the transfer sift lever knob.
4. Remove the center console.
5. Remove three connector from Powertrain Control

Module (PCM). (Y22SE 2.2L Engine only)

6. Remove PCM with bracket.(Fixed four bolts) (Y22SE

2.2L Engine only)

014RX002

7. Remove right side stay between instrument panel

and floor.

8. Remove driver and passenger seat.
9. Turn over carpet to rear side.

10. Remove air conditioning duct for rear seat.

(Transform the duct during removing it)

11. Pull CPA (2) (Connector Position Assurance–red

color) out and push connector lock down to
disconnect the SDM harness connector (3).

SUPPLEMENTAL RESTRAINT SYSTEM

9J–31

12. Remove the three SDM fixing bolts (4) and remove

SDM (3).

827R100001

Legend

(1) Sensing and Diagnostic Module (SDM)
(2) Connector Position Assurance (CPA)
(3) SDM Harness Connector
(4) SDM Fixing Bolts

Installation

1. Install the SDM (1) on bracket and fixing bolts (4) and

tighten the fixing bolts to the specified torque.

Torque: 10 

±

 3 N·m (1.0 

±

 0.3 kg·m/87 

±

 26  lb in)

2. Connect the SDM harness connector (3) and after

that, put CPA into connector (2).

827R100001

Legend

(1) Sensing and Diagnostic Module (SDM)
(2) Connector Position Assurance (CPA)
(3) SDM Harness Connector
(4) SDM Fixing Bolts

3. Install air conditioning duct for rear seat to normal

position.

4. Return carpet normal position.
5. Install right side stay between instrument panel and

floor, tighten to the specified torque.

Torque: 10 

±

 3 N·m (1.0 

±

 0.3 kg·m/87 

±

 26  lb in)

6. Install PCM with bracket and tighten to the specified

torque. (Y22SE 2.2L Engine only)

Torque: 10 

±

 3 N·m (1.0 

±

 0.3 kg·m/87 

±

 26  lb in)

7. Reconnect three connector to Powertrain Control

Module (PCM). (Y22SE 2.2L Engine only)

014RX017

8. Install the center console.
9. Install the transfer shift lever knob.

10. Install the dressing panel around the radio and

reconnect cigar lighter harness.

11. Enable the SRS. (Refer to “Enabling the SRS” in this

manual)

SUPPLEMENTAL RESTRAINT SYSTEM

9J–32

Driver Air Bag Assembly

Service Precautions

WARNING: SAFETY PRECAUTIONS MUST BE
FOLLOWED WHEN HANDLING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE AIR
BAG ASSEMBLY SURFACE MAY CONTAIN A SMALL
AMOUNT OF SODIUM HYDROXIDE, A BY–PRODUCT
OF THE DEPLOYMENT REACTION, THAT IS
IRRITATING TO THE SKIN AND EYES. MOST OF THE
POWDER ON THE AIR BAG ASSEMBLY IS
HARMLESS. AS A PRECAUTION, WEAR GLOVES
AND SAFETY GLASSES WHEN HANDLING A
DEPLOYED AIR BAG ASSEMBLY, AND WASH YOUR
HANDS WITH MILD SOAP AND WATER
AFTERWARDS.

WARNING: WHEN CARRYING A LIVE AIR BAG
ASSEMBLY, MAKE SURE THE BAG AND TRIM
COVER ARE POINTED AWAY FROM YOU. NEVER
CARRY AIR BAG ASSEMBLY BY THE WIRES OR
CONNECTOR ON THE UNDERSIDE OF MODULE. IN
THE CASE OF AN ACCIDENTAL DEPLOYMENT, THE
BAG WILL THEN DEPLOY WITH MINIMAL CHANCE
OF INJURY. WHEN PLACING A LIVE AIR BAG
ASSEMBLY ON A BENCH OR OTHER SURFACE,
ALWAYS FACE BAG AND TRIM COVER UP, AWAY
FROM THE SURFACE. NEVER REST A STEERING
COLUMN ASSEMBLY ON THE STEERING WHEEL
WITH THE AIR BAG ASSEMBLY FACE DOWN AND
COLUMN VERTICAL. THIS IS NECESSARY SO THAT
A FREE SPACE IS PROVIDED TO ALLOW THE AIR
BAG ASSEMBLY TO EXPAND IN THE UNLIKELY
EVENT OF ACCIDENTAL DEPLOYMENT.
OTHERWISE, PERSONAL INJURY COULD RESULT.

NOTE: In the event deployment has occurred, inspect
coil assembly wire for any signs of scorching, melting or
any other damage due to excessive heat. If the coil has
been damaged, replace it.

Removal

1. Disable the Supplemental Restraint System (SRS).

(Refer to “Disabling the SRS” in this section.)

2. Remove air bag assembly from steering wheel by

removing two bolts.  Lift air bag assembly out of
steering wheel.

827RW040

3. Disconnect connector and remove air bag assembly.
4. Disconnect horn lead.

827RS015

Installation

1. Connect air bag to wiring harness connector.

NOTE: Pass the lead wire through the tabs on the plastic
cover (wire protector) of air bag to prevent lead wire from
being pinched.

2. Connect horn lead.
3. Install air bag into steering wheel and tighten bolts to

specified sequence as shown in figure.

Torque: 8.8 N·m (0.9 kg·m/78 lb in)

CAUTION: Never use the air bag assembly from
another vehicle.
Use only the air bag assembly for UE.

4. Enable the Supplemental Restraint System (SRS).

(Refer to “Enabling the SRS” in this section.)