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 [09/2024 - ]: Description
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| U0100-87 | Lost Communication With ECM/PCM "A" Missing Message | When the stereo component equalizer assembly detects a CAN communication malfunction in the ECM for 1 second or more continuously 3 seconds after the ignition switch is turned to ON* | CAN communication system | Active Noise Control | B |
| U0129-87 | Lost Communication With Brake System Control Module Missing Message | When the stereo component equalizer assembly detects a CAN communication malfunction in the brake actuator assembly (No. 2 skid control ECU) for 1 second or more continuously 3 seconds after the ignition switch is turned to ON* | CAN communication system | Active Noise Control | B |
| U0140-87 | Lost Communication with Body Control Module Missing Message | When the stereo component equalizer assembly detects a CAN communication malfunction in the main body ECU (multiplex network body ECU) for 3 seconds or more continuously 3 seconds after the ignition switch is turned to ON* | CAN communication system | Active Noise Control | B |
| U0164-87 | Lost Communication with HVAC Control Module Missing Message | When the stereo component equalizer assembly detects a CAN communication malfunction in the air conditioning system for 25 seconds or more continuously 3 seconds after the ignition switch is turned to ON* | CAN communication system | Active Noise Control | B |
HINT:
*: Malfunction monitoring is not performed during the following conditions to prevent erroneous detection.
- The auxiliary battery voltage is less than 9.5 V.
- Before 3 seconds have elapsed after the auxiliary battery voltage has returned to normal.