Lexus ES: Left Electric Parking Brake Actuator Control Circuit Short to Battery (C060B12)
DESCRIPTION
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| C060B12 | Left Electric Parking Brake Actuator Control Circuit Short to Battery |
|
| DTC stored | An electric parking brake system malfunction is displayed on the multi-information display. |
WIRING DIAGRAM
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CAUTION / NOTICE / HINT
NOTICE:
- The electric parking brake may still operate up to 20 seconds after the engine switch is turned off. Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.
-
After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization.
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- When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch assembly as the parking brake indicator light blinks (red) when the engine switch is first turned on (IG).
PROCEDURE
| 1. | CHECK FOR SHORT TO +B |
(a) Turn the engine switch off.
(b) Make sure the No. 2 parking brake wire assembly is securely installed.
(c) Disconnect the b3 parking brake actuator assembly LH connector.
| (d) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK |  | REPLACE PARKING BRAKE ACTUATOR ASSEMBLY LH |
|
| 2. | CHECK FOR SHORT TO +B |
(a) Disconnect the bN4 No. 2 parking brake wire assembly connector.
| (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK | | REPLACE NO. 2 PARKING BRAKE WIRE ASSEMBLY |
|
| 3. | CHECK FOR SHORT TO +B |
(a) Disconnect the bN4 No. 2 parking brake wire assembly connector.
(b) Disconnect the A40 skid control ECU (brake actuator assembly) connector.
(c) Measure the voltage according to the value(s) in the table below.
| *a | Front view of wire harness connector | *b | (to Skid Control ECU (Brake Actuator Assembly)) |
| *c | (to No. 2 Parking Brake Wire Assembly) | - | - |
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| bN4-2 or A40-13 (MRL+) - Body ground | Always | Below 1 V |
| bN4-1 or A40-12 (MRL-) - Body ground | Always | Below 1 V |
| OK | | REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Left Electric Parking Brake Actuator Control Circuit Open (C060B13)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C060B13 Left Electric Parking Brake Actuator Control Circuit Open
Diagnosis Condition:
Elect
Left Electric Parking Brake Actuator Signal Stuck In Range (C060E2A)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C060E2A Left Electric Parking Brake Actuator Signal Stuck In Range
Diagnosis Condition:
Elec
Right Electric Parking Brake Actuator Signal Stuck In Range (C06132A)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note C06132A Right Electric Parking Brake Actuator Signal Stuck In Range
Diagnosis Condition:
Ele
SEE MORE:
Hybrid/EV Battery Discharge Control Malfunction (P300000)
DESCRIPTION The battery ECU assembly alerts the driver and performs fail-safe control based on malfunction signals. If the SOC drops due to running out of fuel, the vehicle being left with the shift lever in N for a long time or a hybrid control system malfunction, this DTC will be stored. DTC No
Removal
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE 1. REMOVE REAR WHEEL Click here 2. REMOVE REAR AXLE SHAFT NUT (a) Using SST and a hammer, release the staked part of the rear axle shaft nut. S
