Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM100000001GCLL |
Model Year Start: 2020 |
Model: Corolla |
Prod Date Range: [01/2019 - 09/2022] |
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): P0AD911; Hybrid/EV Battery Positive Contactor Circuit Short to Ground; 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] |
DTC
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P0AD911
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Hybrid/EV Battery Positive Contactor Circuit Short to Ground
|
DESCRIPTION
Refer to the description for DTC P0AE411.
Click here
DTC No.
|
Detection Item
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DTC Detection Condition
|
Trouble Area
|
MIL
|
Warning Indicate
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P0AD911
|
Hybrid/EV Battery Positive Contactor Circuit Short to Ground
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Short to ground in the SMRB circuit:
Primary circuit of SMR (+) is malfunctioning.
(2 trip detection logic)
|
-
Wire harness or connector
-
HV battery junction block assembly
-
Hybrid vehicle control ECU
|
Does not come on
|
Master Warning: Comes on
|
Related Data List
DTC No.
|
Data List
|
P0AD911
|
-
VL-Voltage before Boosting
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VH-Voltage after Boosting
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Hybrid/EV Battery Voltage
-
SMRP Status
-
SMRB Status
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SMRG Status
-
SMRP Control Status
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SMRB Control Status
-
SMRG Control Status
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Boosting Converter Shutdown Status
-
Generator Inverter Shutdown Status
-
Motor Inverter Shutdown Status
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CONFIRMATION DRIVING PATTERN
HINT:
After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
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Connect the Techstream to the DLC3.
-
Turn the power switch on (IG) and turn the Techstream on.
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Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
-
Turn the power switch off and wait for 2 minutes or more.
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Turn the power switch on (READY) and wait for 30 seconds or more.
-
Turn the power switch off and wait for 2 minutes or more.
-
Turn the power switch on (IG) and turn the Techstream on.
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Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
-
Check the DTC judgment result.
HINT:
-
If the judgment result shows NORMAL, the system is normal.
-
If the judgment result shows ABNORMAL, the system has a malfunction.
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If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.
WIRING DIAGRAM
Refer to the wiring diagram for the HV Battery High-voltage Line Circuit.
Click here
CAUTION / NOTICE / HINT
CAUTION:
-
Before the following operations are conducted, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip from HV battery.
-
Inspecting the high-voltage system
-
Disconnecting the low voltage connector of the inverter with converter assembly
-
Disconnecting the low voltage connector of the HV battery
-
To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.
-
After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
HINT:
If DTC P0AD911 is output, the power switch cannot be turned on (READY).
PROCEDURE
1.
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CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND)
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(a) Disconnect the I2 hybrid vehicle control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
I2-16 (SMRB) - Body ground
|
Power switch off
|
20.6 to 40.8 Ω
|
|
|
*a
|
Front view of wire harness connector
(to Hybrid Vehicle Control ECU)
|
|
|
(c) Reconnect the I2 hybrid vehicle control ECU connector.
NG
|
|
|
2.
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CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR)
|
Click here
Result
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Proceed to
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OK
|
A
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NG (The connector is not connected securely.)
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B
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NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.)
|
C
|
B |
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CONNECT SECURELY
|
C |
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REPAIR OR REPLACE HARNESS OR CONNECTOR
|
A
|
|
|
3.
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CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - HV BATTERY JUNCTION BLOCK ASSEMBLY)
|
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 No. 1 HV battery cover panel RH.
Click here
(c) Disconnect the O35 HV battery junction block assembly connector.
|
|
(d) Disconnect the I2 hybrid vehicle control ECU connector.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
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Condition
|
Specified Condition
|
I2-16 (SMRB) or O35-1 (SMRB) - Body ground and other terminals
|
Power switch off
|
10 kΩ or higher
|
|
|
*a
|
Front view of wire harness connector
(to Hybrid Vehicle Control ECU)
|
*b
|
Front view of wire harness connector
(to HV Battery Junction Block Assembly)
|
|
|
(f) Reconnect the I2 hybrid vehicle control ECU connector.
(g) Reconnect the O35 HV battery junction block assembly connector.
(h) Install the No. 1 HV battery cover panel RH.
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|