Chrysler RG Voyager. Manual - part 52

POSSIBLE CAUSES

PCI BUS CIRCUIT SHORTED TO GROUND

OCS - SERVICE REPLACEMENT KIT

TEST

ACTION

APPLICABILITY

Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
From the list below, select the appropriate module and DTC type for this diagnostic
trouble code.
DETERMINE ACTIVE OR STORED DTC

All

ACM - ACTIVE

ACM - STORED

OCM - ACTIVE DTC

OCM -STORED DTC

NOTE: When reconnecting airbag system components the Ignition must be
turned off and the Battery must be disconnected.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, DISCONNECT THE
BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.

All

Repair

Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.

Inspect the passenger OCS wiring to determine if the Bladder and Cushion Service
Kit has been installed.
NOTE: Check connectors - for tamper evident material.
Tamper evident material is installed onto the Kit harness to keep the kit components
together in shipping and installation.
NOTE: The Bladder and Cushion Service Kit component are calibrated
together and should not be disconnected.
If the OCM harness connector can be easily disconnected the OCS is original
equipment.
Is it original equipment?

All

Yes

→ Go To 4

→ Go To 5

177

AIRBAG

NO PCI LOOPBACK —

Continued

TEST

ACTION

APPLICABILITY

WARNING: TO AVOID PERSONAL INJURY OR DEATH, DISCONNECT THE
BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE OCCUPANT CLASSIFICATION MODULE IS DROPPED
AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.

All

Repair

Replace the Occupant Classification Module in accordance with
Service Instructions.
Perform OCS VERIFICATION TEST - VER 1.

WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
WARNING: IF THE OCCUPANT CLASSIFICATION MODULE IS DROPPED
AT ANY TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.

All

Repair:

Install or replace the OCS Bladder Service Kit in accordance with
service information. Then perform the Verification Required test
to remove DTC created by the repair.
Perform OCS VERIFICATION TEST - VER 1.

Note: Determine which modules this vehicle is equipped with before begin-
ning.
Note: When attempting to communicate with any of the modules on this
vehicle, the DRB will display 1 of 2 different communication errors: a NO
RESPONSE message or a BUS +/- SIGNALS OPEN message.
Turn the ignition on.
Using the DRB, attempt to communicate with the following control modules:
Airbag Control Module
Occupant Classification Module - If equipped
Front Control Module - If equipped
Instrument Cluster
Occupant Classification Module (If equipped)
Was the DRBIII

t able to communicate with one or more Module(s)?

All

Yes

→ Go To 7

→ Go To 12

Turn the ignition off.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: If the DRB can not communicate with a single module, refer to the
category list for the related symptom.
Were any problems found?

All

Yes

→ Repair wiring harness/connectors as necessary.

Perform __AIRBAG VERIFICATION TEST - VER 1.

→ Go To 8

178

AIRBAG

NO PCI LOOPBACK —

Continued

TEST

ACTION

APPLICABILITY

Ensure that the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Turn the ignition on and then reconnect the Battery.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output (Run) Circuit and the Fused Ignition Switch Output (Run/Start) Circuit at
the ACM connector.
NOTE: One open circuit will not cause a NO RESPONSE condition.
Is the test light illuminated on both circuits?

All

Yes

→ Go To 9

→ Repair the Fused Ignition Switch Output (Run) and Fused

Ignition Switch Output Run-Start circuits for an open.
Perform __AIRBAG VERIFICATION TEST - VER 1.

NOTE: When reconnecting airbag system components, the ignition must be
turned off and the battery must be disconnected.

Ensure that the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
NOTE: Make sure test light is connected to the Battery positive terminal.
Is the test light illuminated?

All

Yes

→ Go To 10

→ Repair the Ground circuit for an open.

Perform __AIRBAG VERIFICATION TEST - VER 1.

When reconnecting Airbag system components, the ignition must be turned
off and the battery must be disconnected.

179

AIRBAG

NO PCI LOOPBACK —

Continued

TEST

ACTION

APPLICABILITY

NOTE: Ensure there is PCI bus communication with other modules. If not,
refer to the PCI Bus Communication Failure symptom and repair as
necessary.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Turn the ignition on and then reconnect the Battery.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIII

t select Pep Module Tools.

Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the ACM connector.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?

All

Yes

→ Go To 11

→ Repair the PCI Bus circuit for an open.

Perform __AIRBAG VERIFICATION TEST - VER 1.

All

Repair

Replace the Airbag Control Module in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.

180

AIRBAG

NO PCI LOOPBACK —

Continued

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