P0AE2-161
HYBRID / BATTERY 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 circuit 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) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Result:
(e) Turn the power switch off.
B -- GO TO DTC CHART (P0AE0-228) Hybrid Control System
A -- Continue to next step.
2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR) P0343
NG -- CONNECT SECURELY
OK -- Continue to next step.
3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE 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 hybrid vehicle converter connector.
OK:
The connector is connected securely and there are no contact problems.
NG -- CONNECT SECURELY
OK -- Continue to next step.
4. CHECK CONNECTOR CONNECTION CONDITION (HYBRID BATTERY JUNCTION BLOCK ASSEMBLY 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 hybrid battery junction block assembly connectors.
OK:
The connectors are connected securely and there are no contact problems.
(c) Check the connection of the low voltage connector that drives the HV relay assembly.
OK:
The connector is connected securely and there are no contact problems.
NG -- CONNECT SECURELY
OK -- Continue to next step.
5. INSPECT HYBRID BATTERY JUNCTION BLOCK ASSEMBLY (SMRG)
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) Remove the hybrid battery junction block assembly Components.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(e) Install the hybrid battery junction block assembly Components.
NG -- REPLACE HYBRID BATTERY JUNCTION BLOCK ASSEMBLY Components
OK -- Continue to next step.
6. CHECK ELECTRIC VEHICLE FUSE (DC/DC)
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) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE ELECTRIC VEHICLE FUSE (DC/DC) Components
OK -- Continue to next step.
7. CHECK HYBRID VEHICLE CONTROL ECU
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 z17 connector from the hybrid vehicle converter.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(d) Connect the hybrid vehicle converter connector.
NG -- CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HYBRID VEHICLE CONVERTER)
OK -- REPLACE HYBRID VEHICLE CONVERTER Components
8. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - 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 connector A58 from the hybrid vehicle control ECU.
(c) Disconnect connector z17 from the hybrid vehicle converter.
(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 and hybrid battery junction block assembly connectors 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:
Standard Resistance:
(h) Connect the hybrid vehicle converter connector.
(i) Connect the hybrid vehicle control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU Components