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Home >> Chrysler >> 2004 >> Pacifica FWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Body Diagnostic Procedures - Adjustable Pedals, Airbag, Audio, Chime >> Diagnostic Information And Procedures >> Airbag >> Symptom: NO LEFT SIDE IMPACT SENSOR 1 COMMUNICATION >> Diagnostic Procedure

Diagnostic Procedure

NO LEFT SIDE IMPACT SENSOR 1 COMMUNICATION - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1 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.

SELECT ACTIVE or STORED DTC:
  1. ACM-ACTIVE DTC: Go To 2
  2. ACM - STORED DTC: Go To 9
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must be disconnected.
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2
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
Disconnect the Left Side Impact Sensor 1 connector.Disconnect the Airbag Control Module connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the voltage of the Left Side Impact Sensor 1 Signal circuit and sensor 1 ground circuit at the Left Side Sensor 1 connector and ground.Is there any voltage present?
  1. Yes: Repair the Left Side Impact Sensor 3 circuits shorted to battery.

    Perform AIRBAG VERIFICATION TEST VER-1 .

  2. No: Go To 3
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3
WARNING: TURN IGNITION ON, THEN RECONNECT THE BATTERY.
Measure the resistance of the Left Side Impact Sensor 1 Signal circuit between the Driver Side Impact Sensor 1 connector and ground.Is the resistance below 100K ohms?
  1. Yes: Repair the Left Side Impact Sense 1 Signal circuit shorted for a short to ground.

    Perform AIRBAG VERIFICATION TEST VER-1 .

  2. No: Go To 4
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4 Measure the resistance between the Driver Side Impact Sensor Signal and Sensor Ground circuits at the Left Side Impact Sensor 1 connector.
Is the resistance below 100K ohms?
  1. Yes: Repair the Left Side Impact Sensor 1 circuits shorted together.

    Perform AIRBAG VERIFICATION TEST VER-1 .

  2. No: Go To 5
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5 Connect the appropriate Load Tool ACM Adaptor to the Airbag Control Module connector.
Measure the resistance of the Left Side Impact Sensor 1 Ground circuit between the Left Side Impact Sensor 1 connector and the Load Tool ACM Adaptor.
Is the resistance below 1 ohm?
  1. Yes: Go To 6
  2. No: Repair the Left Side Impact Sensor 1 Ground circuit open or high resistance.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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6 Measure the resistance of the Left Side Impact Sensor 1 Signal circuit between the Left Side Impact Sensor 1 connector and the Load Tool ACM Adaptor.
Is the resistance below 1 ohm?
  1. Yes: Go To 7
  2. No: Repair the Left Side Impact Sensor 1 Signal circuit open or high resistance.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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7 Replace the Left Side Impact Sensor 1.
Reconnect the vehicle body harness to the impact sensor.
Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

Connect the DRBIII® to the Data Link Connector - use the most current software available.
Use the DRBIII® and erase the stored codes in all airbag system modules.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes and if there are none present read the stored codes.
DID the active Left Side Impact Sensor 1 DTC return?
  1. Yes: Go to 8
  2. No: Repair is complete.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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8
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY TIME, IT MUST BE REPLACED.
If there are no possible causes remaining, view repair.
  1. Repair: Replace the Airbag Control Module in accordance with Service Instructions.

    Perform AIRBAG VERIFICATION TEST VER-1 .

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9 With the DRBIII®, record and erase all DTC's from all Airbag modules.
If equipped with Passenger Airbag On - Off switch, read the DTC's in all switch positions.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: TURN THE IGNITION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE PROCEEDING.

Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: TURN THE IGNITION ON, THEN RECONNECT THE BATTERY.

With the DRBIII® monitor active codes as you work through the following steps.
WARNING: MAINTAIN A SAFE DISTANCE FROM ALL AIRBAGS WHILE PERFORMING THE FOLLOWING STEPS.

Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver circuits, rotate the steering wheel from stop to stop.
You have just attempted to simulate the condition that initially set the trouble code message.
Did the DTC become active?
  1. Yes: Select appropriate symptom from SYMPTOM LIST.
  2. No: No problem found at this time. Erase all codes before returning vehicle to customer.
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