P0AE2

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0AE2-161: Hybrid Battery Precharge Contactor Circuit Stuck Closed
P0AE2-161 - Hybrid Battery Precharge Contactor Circuit Stuck Closed

DESCRIPTION

Refer to the description for DTC P0AE6-225 P0AE6.

If SMRG is stuck open, P0AE0-228 will usually be set. P0AE2-161 is used to pinpoint the problem more quickly and accurately.

WIRING DIAGRAM

Refer to the wiring diagram for DTC P0AE6-225 P0AE6.

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.
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 (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:

B -- GO TO DTC CHART (P0AE0-228) P0ADF
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 (BATTERY PACK WIRE CONNECTORS)

(a) Check the connection of the battery pack wire connectors.

OK:

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

HINT
For the removal and installation procedures related to inspection of the connection of the battery pack wire connectors, Removal.

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

4. CHECK HARNESS AND CONNECTOR (RESISTANCE VALUE OF SMRP INSIDE HYBRID VEHICLE CONTROL ECU)

(a) Turn the power switch off.

(b) Disconnect the No. 2 battery pack wire connector.

Standard resistance:

NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 2 BATTERY PACK WIRE CONNECTOR)
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 1 BATTERY PACK WIRE CONNECTOR)

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

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

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

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.

Standard voltage:

(d) Turn the power switch off.

(e) 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.

6. CHECK HV BATTERY JUNCTION BLOCK (HIGH-VOLTAGE CONNECTOR CONNECTION)

CAUTION:
Be sure to wear insulated gloves.

(a) Turn the power switch off.

(b) Remove the service plug grip Hybrid Control System.

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.

(c) Check the connections of the high-voltage connectors for the hybrid vehicle converter that are connected to the HV battery junction block.

OK:

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

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

7. CHECK HV BATTERY JUNCTION BLOCK (ELECTRIC BATTERY FUSE)

CAUTION:
Be sure to wear insulated gloves.

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

(b) Check if there is an open circuit in the electric battery fuse that is installed in the HV battery junction block.

OK:

There is no open circuit in the fuse.

(c) Check that the bolts for the electric battery fuse are tightened to the specified torque.

Specified Condition:

T=4.5 N*m {46 kgf*cm, 40 in.*lbf}

NOTICE:
Be sure to use a torque wrench to check the tightening torque.

NG -- REPLACE ELECTRIC BATTERY FUSE Components
OK -- Continue to next step.

8. CHECK CONNECTOR CONNECTION CONDITION (HV BATTERY JUNCTION BLOCK CONNECTOR)

CAUTION:
Be sure to wear insulated gloves.

(a) Turn the power switch off.

(b) 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.

(c) Check the connection of the low voltage connector that drives the relay of the HV battery junction block.

OK:

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

HINT
For the removal and installation procedures related to inspection of the connection of the connector that drives the relay of the HV battery junction block, Components.

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

9. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL CONVERTER CONNECTOR)

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) Check the connection of the low voltage connector of the hybrid vehicle converter.

OK:

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

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

10. CHECK HARNESS AND CONNECTOR (NO. 1 BATTERY PACK WIRE CONNECTOR - HV BATTERY JUNCTION BLOCK)

CAUTION:
Be sure to wear insulated gloves.

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

(b) Disconnect the low voltage connector that drives the relay of the HV battery junction block.

(c) 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.

11. CHECK HARNESS AND CONNECTOR (NO. 2 BATTERY PACK WIRE CONNECTOR - HYBRID VEHICLE 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 the low voltage connector from the hybrid vehicle converter.

(c) 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.

12. INSPECT HV BATTERY JUNCTION BLOCK (SMRG)

CAUTION:
Be sure to wear insulated gloves.

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

(b) Disconnect the HV battery junction block from the vehicle Components.

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

Standard resistance:

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

Standard resistance:

NG -- REPLACE HV BATTERY JUNCTION BLOCK Components
OK -- Continue to next step.

13. CHECK HYBRID VEHICLE CONVERTER

(a) Check that the ground bolts for the hybrid vehicle converter are tightened to the specified torque and that there are no contact problems.

Torque : 7.5 Nm (76 kgf-cm, 66 in-lbf)

NG -- CONNECT SECURELY

OK -- REPLACE HYBRID VEHICLE CONVERTER Components

14. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - NO. 2 BATTERY PACK WIRE CONNECTOR)

(a) Turn the power switch off.

(b) Disconnect connector A74 from the hybrid vehicle control ECU.

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

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

HINT
Turning the power switch on (IG) with the service plug grip removed causes an interlock switch system DTC (P0A0D-350) to be set.

Standard voltage:

(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 -- REPLACE HYBRID VEHICLE CONTROL ECU Components