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Home >> Chrysler >> 2005 >> Pacifica Limited >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Body Diagnostic Procedures - Diagnostic Information And Procedures - HVAC, Ignition Power Accessory, Instrument Cluster, Interior Lighting, Navigation, Overhead Console >> Heating & A/C >> Symptom: VEHICLE SPEED/RPM MESSAGE MISSING (ACTIVE) - ATC >> Diagnostic Procedure

Diagnostic Procedure

VEHICLE SPEED/RPM MESSAGE MISSING (ACTIVE) - ATC SYMPTOM CHART

TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII®, read the active ATC DTCs.
Does the DRBIII® display: NO COMMUNICATION WITH PCM?
Yes --> Return to the Heating & A/C symptom list and choose the symptom.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Go To 2		 All
2 Turn the ignition on.
With the DRBIII®, read PCM DTCs.
Does the DRBIII® display any DTCs?
Yes --> Refer to the POWERTRAIN DIAGNOSTIC PROCEDURES for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1 .
No --> Go To 3		 All
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?
Yes --> Replace the Powertrain Control Module (PCM) in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .
No --> Replace the Automatic Temperature Control (ATC) in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1 .		 All
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