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REFRIGERANT PRESSURE RX FAILURE (CONTINUED) 3. VERIFY THAT THE PCM OR ECM IS BROADCASTING THE MESSAGE ON THE PCI BUS With the DRBIII T in HVAC, select Monitor Display and then select PCI Bus Messages. From the list, select Refrigerant Pressure. Does the DRBIII T display NO RESPONSE after this message? Yes (Gasoline Engines) Perform the *No Response From PCM (PCI Bus) diagnostic procedure. (Refer to 8 - ELECTRICAL/ Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL Yes (Diesel Engines) Perform the *No Response From ECM (PCI Bus) diagnostic procedure. (Refer to 8 - ELECTRICAL/ Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL No >> Replace the A/C Heater Control in accordance with the Service Information. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL SHORT TOO COMPLEX For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes DOOR DRIVER CIRCUIT(S) SHORTED TO GROUND DOOR DRIVER CIRCUIT(S) SHORTED TO VOLTAGE DOOR DRIVER CIRCUITS SHORTED TOGETHER DOOR ACTUATOR(S) A/C HEATER CONTROL For Single-Zone HVAC systems, refer to *ACTUATOR CIRCUIT TEST DIAGNOSTICS (SINGLE-ZONE) in this 24 - 116 HVAC - ELECTRICAL DIAGNOSTICS DR/DH |