P3107-213

HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM: P3107-213: Airbag ECU Communication Circuit Malfunction
P3107-213 - Airbag ECU Communication Circuit Malfunction

DESCRIPTION

- The power management control ECU (HV CPU) detects a problem in the collision signal line from the airbag sensor assembly and alerts the driver.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (SRS AIRBAG)

(a) Connect the Techstream to the DLC3.

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

(c) Enter the following menus: Body Electrical / SRS Airbag / Trouble Codes.

(d) Check if DTCs are output.

Result:





(e) Turn the power switch off.

B -- GO TO DTC CHART (AIRBAG SYSTEM) Airbag System
A -- Continue to next step.

2. CHECK AIRBAG SENSOR ASSEMBLY (CHECK WAVEFORM)

(a) Connect an oscilloscope between the airbag sensor assembly terminals specified in the table below.

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

(c) Measure the waveform.









Result:





Text in Illustration





(d) Turn the power switch off.

B -- CHECK AIRBAG SENSOR ASSEMBLY
A -- Continue to next step.

3. CLEAR DTC P0A09

NEXT -- Continue to next step.

4. CHECK DTC OUTPUT (HYBRID CONTROL)

(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 -- REPLACE POWER MANAGEMENT CONTROL ECU Components
A -- Continue to next step.

5. CHECK FOR INTERMITTENT PROBLEMS

(a) Check for intermittent problems Check For Intermittent Problems.

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components

6. CHECK AIRBAG SENSOR ASSEMBLY

(a) Disconnect connector H84 from the airbag sensor assembly.

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





Standard Resistance:





Text in Illustration





(c) Connect the airbag sensor assembly connector.

NG -- REPLACE AIRBAG SENSOR ASSEMBLY Components
OK -- Continue to next step.

7. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - AIRBAG SENSOR ASSEMBLY)

(a) Disconnect connector H3 from the power management control ECU.

(b) Disconnect connector H84 from the airbag sensor assembly.

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





Standard Resistance:





Text in Illustration





(d) Connect the airbag sensor assembly connector.

(e) Connect the power management control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER MANAGEMENT CONTROL ECU Components