U0110-160 - Lost Communication with Driver Motor Control Module

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: U0110-160: Lost Communication with Driver Motor Control Module
U0110-160 - Lost Communication with Driver Motor Control Module

DESCRIPTION

Refer to the description for DTC U0110-159 U0110.





WIRING DIAGRAM

Refer to the wiring diagram for DTC U0110-159 U0110.

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.
NOTICE:
If the DTC U0110-160 was set due to incomplete engagement of the connectors, and if the system returns to normal when the power switch is on (IG) after clearing the DTCs, DTC P0A1B-788 will be set. Proceed to troubleshooting without considering DTC P0A1B-788.

HINT
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

PROCEDURE

1. CLEAR DTC P0A09

NEXT -- Continue to next step.

2. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:





(e) Turn the power switch off.

B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - INVERTER WITH CONVERTER)

CAUTION:
Be sure to wear insulated gloves.

(a) Check that the service plug grip is not installed.

NOTICE:
After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

(b) Disconnect connector A58 from the hybrid vehicle control ECU.

(c) Disconnect connector the low voltage A59 from the inverter with converter assembly.

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

(e) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





Text in Illustration





NOTICE:
Turning the power switch on (IG) with the hybrid vehicle control ECU connector and the low voltage connector of the inverter with converter assembly disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

(f) Turn the power switch off.

(g) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





(h) Connect the inverter with converter assembly connector.

(i) Connect the hybrid vehicle control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK HYBRID VEHICLE CONTROL ECU

(a) Disconnect the low voltage connector A59 from the inverter with converter assembly.

(b) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





(c) Connect the inverter with converter assembly connector.

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Components
OK -- Continue to next step.

5. CHECK INVERTER WITH CONVERTER ASSEMBLY

(a) Disconnect connector A58 from the hybrid vehicle control ECU.

(b) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





(c) Connect the hybrid vehicle control ECU connector.

NG -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Components
OK -- Continue to next step.

6. CHECK HYBRID VEHICLE CONTROL ECU (CHECK WAVEFORM) U0110

NG -- REPLACE HYBRID VEHICLE CONTROL ECU Components

OK -- REPLACE INVERTER WITH CONVERTER ASSEMBLY Components