U0129-528

L110 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: U0100-211,U0100-212,U0100-530,U0100-774,U0100-784,U0129-220,U0129-222,U0129-528,U0133-147,U0146-146: Lost Communication with ECM / PCM "A"

DTC U0100-211 - Lost Communication with ECM / PCM "A"

DTC U0100-212 - Lost Communication with ECM / PCM "A"

DTC U0100-530 - Lost Communication with ECM / PCM "A"

DTC U0100-774 - Lost Communication with ECM / PCM "A"

DTC U0100-784 - Lost Communication with ECM / PCM "A"

DTC U0129-220 - Lost Communication with Brake System Control Module

DTC U0129-222 - Lost Communication with Brake System Control Module

DTC U0129-528 - Lost Communication with Brake System Control Module

DTC U0133-147 - Lost Communication with Active Roll Control Module

DTC U0146-146 - Lost Communication with Gateway "A"

DESCRIPTION
- The hybrid vehicle control ECU transmits and receives signals to and from the ECM, skid control ECU assembly, absorber control ECU, and network gateway ECU via CAN communication.





MONITOR DESCRIPTION

If the hybrid vehicle control ECU detects a problem with CAN communication between the ECU and ECM, the hybrid vehicle control ECU will illuminate the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





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, check the voltage at 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 (ALL)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Check for DTCs of all systems by following the prompts on the Techstream screen.
HINT: If DTCs other than CAN communication DTCs are output simultaneously, first repair the CAN communication problem, and then perform troubleshooting for other DTCs.

NEXT -- GO TO CAN COMMUNICATION SYSTEM