U0424

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: U0424-537: Invalid Data Received from HVAC Control Module
U0424-537 - Invalid Data Received from HVAC Control Module

DESCRIPTION

If there is a malfunction in the air conditioning amplifier assembly, DTC U0424-537 will be output.





INSPECTION PROCEDURE

CAUTION:
* Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
* After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CHECK DTC OUTPUT (AIR CONDITIONING SYSTEM)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Select the following menu items: Body Electrical / Air Conditioner / Trouble Codes.

(d) Check if DTCs are output.

Result:





B -- GO TO AIR CONDITIONING SYSTEM How To Proceed With Troubleshooting

A -- REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Components