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Home >> Chrysler >> 2004 >> Pacifica AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Diagnostic Procedures - HVAC, Ignition Power Accessory, Instrument Cluster, Interior Lighting, Navigation, Overhead Console, Power Door Locks/RKE >> Heating & A/C >> Symptom: VEHICLE SPEED/RPM MESSAGE MISSING (ACTIVE) >> Diagnostic Procedure

Diagnostic Procedure

VEHICLE SPEED/RPM MESSAGE MISSING (ACTIVE) - DIAGNOSTIC PROCEDURE

TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII®, read the active ATC DTCs.
Does the DRBIII® display: NO COMMUNICATION WITH PCM?
  1. Yes: Return to the Heating & A/C SYMPTOM LIST and choose the symptom.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 2
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2 Turn the ignition on.
With the DRBIII®, read PCM DTCs.
Does the DRBIII® display any DTCs?
  1. Yes: Refer to POWERTRAIN DIAGNOSTIC PROCEDURES for the related symptom(s).

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Go To 3
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3 Turn the ignition on.
With DRBIII® in ATC, Monitor Display, PCI Bus Messages, look for the following messages:
"ENGINE RPM:"
"VEHICLE SPEED:"
Is "NO RESPONSE" displayed after either of these messages?
  1. Yes: Replace the Powertrain Control Module (PCM) in accordance with the Service Information.

    Perform BODY VERIFICATION TEST VER-1 .

  2. No: Replace the Automatic Temperature Control (ATC) in accordance with the Service Information.

    Perform BODY VERIFICATION TEST VER-1 .

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