Test H: The Defrost System Does Not Shut Off Automatically

PINPOINT TEST H: THE DEFROST SYSTEM DOES NOT SHUT OFF AUTOMATICALLY

H1-H5:

H5 Continued:

Normal Operation
The heated rear window relay coil stays grounded by the REM for approximately 10 minutes, after which the REM removes the ground to circuit 91S-HB23 (BN/WH), thereby opening the heated rear window relay. This disconnects the voltage from circuits 15S-DA13 (GN/YE)/15S-HB19 (GN/BU), which powers the heated rear window.

Possible Causes
- circuit 91S-HB23 (BN/WH) short to ground
- circuits 15S-DA13 (GN/YE), 15S-HB19 (GN/BU) short to voltage
- heated rear window relay
- REM
- DATC module