P3108

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3108-535,P3108-536,P3108-538: A/C Amplifier Communication Circuit Malfunction
P3108-538 - A/C Amplifier Communication Circuit Malfunction

DESCRIPTION

- The hybrid vehicle control ECU detects a wiring malfunction in the serial communication line between it and the with motor compressor assembly.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

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

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:









HINT
DTC P3108-535 may be stored due to an open circuit in the SMRB or SMRG circuit.

B -- GO TO DTC CHART Hybrid Control System
A -- Continue to next step.

2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

(a) Check the connections of the hybrid vehicle control ECU connectors.

OK:

The connectors are connected securely and there are no contact problems.

NG -- CONNECT SECURELY
OK -- Continue to next step.

3. CHECK CONNECTOR CONNECTION CONDITION (WITH MOTOR COMPRESSOR ASSEMBLY CONNECTOR)

(a) Check the connection of the low voltage connector of the with motor compressor assembly.





OK:

The connector is connected securely and there are no contact problems.

NG -- CONNECT SECURELY
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (WITH MOTOR COMPRESSOR ASSEMBLY)

(a) Turn the power switch off.





(b) Disconnect the with motor compressor assembly connector.

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

Standard resistance:





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

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

Standard voltage:





NOTICE:
Turning the power switch on (IG) with the with motor compressor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

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

5. CHECK DTC OUTPUT (HV)

(a) Turn the power switch off.

(b) Connect the with motor compressor assembly connector.

(c) Connect the Techstream to the DLC3.

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

(e) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(f) Check if DTCs are output.

Result:





B -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - WITH MOTOR COMPRESSOR ASSEMBLY)
A -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - WITH MOTOR COMPRESSOR ASSEMBLY)

(a) Turn the power switch off.

(b) Disconnect the with motor compressor assembly connector.

(c) Disconnect connector E55 from the hybrid vehicle control ECU.





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

Standard voltage:





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

(e) Turn the power switch off.

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

Standard resistance (Check for open):





Standard resistance (Check for short):





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

7. CHECK HYBRID VEHICLE CONTROL ECU

(a) Turn the power switch off.





(b) Connect the hybrid vehicle control ECU connector.

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

Standard resistance:





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

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

Standard voltage:





NOTICE:
Turning the power switch on (IG) with the with motor compressor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

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

8. CHECK WITH MOTOR COMPRESSOR ASSEMBLY

(a) Turn the power switch off.





(b) Connect the with motor compressor assembly connector.

(c) Disconnect connector E55 from the hybrid vehicle control ECU.

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

Standard resistance:





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

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

Standard voltage:





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

NG -- REPLACE WITH MOTOR COMPRESSOR ASSEMBLY Removal

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components

9. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - WITH MOTOR COMPRESSOR ASSEMBLY)

(a) Turn the power switch off.

(b) Disconnect the with motor compressor assembly connector.

(c) Disconnect connector E55 from the hybrid vehicle control ECU.





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

Standard voltage:





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

(e) Turn the power switch off.

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

Standard resistance (Check for open):





Standard resistance (Check for short):





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

10. CHECK HYBRID VEHICLE CONTROL ECU

(a) Turn the power switch off.





(b) Connect the hybrid vehicle control ECU connector.

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

Standard resistance:





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

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

Standard voltage:





NOTICE:
Turning the power switch on (IG) with the with motor compressor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

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

11. CHECK WITH MOTOR COMPRESSOR ASSEMBLY

(a) Turn the power switch off.





(b) Connect the with motor compressor assembly connector.

(c) Disconnect connector E55 from the hybrid vehicle control ECU.

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

Standard resistance:





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

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

Standard voltage:





NG -- REPLACE WITH MOTOR COMPRESSOR ASSEMBLY Removal

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components