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P1687-NO CLUSTER BUS MESSAGE (CONTINUED) 3. INSTRUMENT CLUSTER OPERATION Start the engine Allow the engine to idle. Is the correct engine speed display in the instrument cluster (Tach)? Yes >> Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Refer to the Instrument Category in the Body Diagnostic Manual and perform the appropriate symptom. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9 - 2006 ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10 DR/DH |