Toyota Corolla Cross: Hybrid/EV Battery Negative Contactor Circuit Short to Ground (P0ADD11)
DESCRIPTION
Refer to the description for DTC P0AD911.
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|
DTC No. | Detection Item |
DTC Detection Condition |
Trouble Area | MIL |
Warning Indicate | Note |
|---|---|---|---|---|---|---|
|
P0ADD11 | Hybrid/EV Battery Negative Contactor Circuit Short to Ground |
Short to ground in the SMRG circuit: Primary circuit of SMR (-) is malfunctioning. (2 trip detection logic) |
| Does not come on |
Master Warning: Comes on |
SAE Code: P0ADF |
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.
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- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON (READY) and wait for 30 seconds or more.
- Turn the ignition switch off and wait for 2 minutes or more.
- Turn the ignition switch to ON and turn the GTS on.
- 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.
- If the judgment result shows INCOMPLETE, perform driving pattern again.
WIRING DIAGRAM
Refer to the wiring diagram for the HV Battery High-voltage Line Circuit.
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CAUTION / NOTICE / HINT
CAUTION:
Refer to the precautions before inspecting high voltage circuit.
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NOTICE:
- After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
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- When disconnecting and reconnecting the auxiliary battery
HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
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HINT:
If DTC P0ADD11 is output, the ignition switch cannot be turned to ON (READY).
PROCEDURE
|
1. | CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BODY GROUND) |
(a) Disconnect the 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 |
|---|---|---|
|
I249-27 (SMRG) - Body ground |
Ignition switch off |
20.6 to 40.8 Ω |
(c) Reconnect the hybrid vehicle control ECU connector.
| OK | .gif) | REPLACE HYBRID VEHICLE CONTROL ECU |
|
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|
2. | CHECK CONNECTOR CONNECTION CONDITION (FLOOR WIRE CONNECTOR) |
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|
Result | Proceed to |
|---|---|
|
OK | A |
|
NG (The connector is not connected securely.) |
B |
| NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) |
C |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. | 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 ignition switch to ON (READY), unless instructed by the repair manual because this may cause a malfunction.
| (b) Disconnect the HV battery junction block assembly connector. |
|
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(c) Disconnect the hybrid vehicle control ECU connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
I249-27 (SMRG) or O212-6 (SMRG) - Body ground and other terminals |
Ignition switch off |
10 kΩ or higher |
(e) Reconnect the hybrid vehicle control ECU connector.
(f) Reconnect the HV battery junction block assembly connector.
| OK | | REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
