Symptom Chart

WARNING: This page is about a different variant/trim than selected.

SYMPTOM CHART

Condition	Possible Sources	Action
No communication with the traction battery control module (TBCM)	Circuitry TBCM	REFER to HIGH VOLTAGE TRACTION BATTERY .
Insufficient, erratic, or no heat	Engine cooling system Heater core Temperature blend door Temperature control cable	GO to PINPOINT TEST D .
The air conditioning (A/C) is inoperative	Circuitry A/C clutch relay A/C compressor clutch A/C compressor clutch air gap A/C system discharged/low charge Dual function pressure switch Low charge protection switch Passenger zone valve Front evaporator thermistor Function selector switch Powertrain control module (PCM)	GO to PINPOINT TEST E .
The air conditioning (A/C) is always on	Circuitry A/C clutch relay A/C compressor clutch air gap Function selector switch Powertrain control module (PCM)	GO to PINPOINT TEST F .
Insufficient air conditioning (A/C) cooling	Low refrigerant level. Temperature blend door actuator.	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .
Temperature control is inoperative	Temperature selector Temperature control cable Temperature blend door	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .
The blower motor is inoperative	Circuitry Blower motor switch Blower motor relay Blower motor	GO to PINPOINT TEST G .
No operation in high blower setting	Circuitry Blower motor switch	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .
No operation in lower speeds	Circuitry Blower motor resistor Blower motor switch	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .
No operation in some blower speeds	Circuitry Blower motor resistor Blower motor switch	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .
Incorrect/erratic direction of air flow from outlets	A/C vacuum reservoir tank Function selector switch Vacuum hose Vacuum control motor	GO to PINPOINT TEST H .
Insufficient air conditioning (A/C) cooling	Low refrigerant level. Temperature blend door actuator.	REFER to HVAC CONTROL SYSTEM - GENERAL INFORMATION .