DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message [06/2018 - 09/2022]: Description
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100-87 | Lost Communication With ECM/PCM "A" Missing Message | Stereo component equalizer assembly detects CAN communication malfunction in engine system for 1 second or more continuously, 3 seconds or more after engine switch is turned on (IG)* | CAN communication system |
| U0129-87 | Lost Communication With Brake System Control Module Missing Message | Stereo component equalizer assembly detects CAN communication malfunction in brake system for 1 second or more continuously, 3 seconds or more after engine switch is turned on (IG)* | CAN communication system |
| U0140-87 | Lost Communication with Body Control Module Missing Message | Stereo component equalizer assembly detects CAN communication malfunction in main body ECU for 3 seconds or more continuously, 3 seconds or more after engine switch is turned on (IG)* | CAN communication system |
| U0164-87 | Lost Communication with HVAC Control Module Missing Message | Stereo component equalizer assembly detects CAN communication malfunction in the air conditioning system for 25 seconds or more continuously 3 seconds after the engine switch is turned on (IG)* | CAN communication system |
HINT:
*: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection.
- After engine switch is turned on (ACC) for 3 seconds or more.
- After the battery voltage returns to normal for 3 seconds.
- Before 3 seconds have elapsed after battery voltage has returned to normal.