Toyota Tacoma (2015-2018) Service Manual: Accumulator Low Pressure (C1452)
DESCRIPTION
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1452 |
After braking, the fluid pressure inside the accumulator is below the threshold within 3.2 seconds. |
|
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform calibration
(See page .gif)
).
PROCEDURE
|
1. |
CUSTOMER PROBLEM ANALYSIS |
(a) Check with the customer to determine if frequent braking has been performed.
|
.gif)
|
2. |
RECONFIRM DTC |
(a) Clear the DTC (See page
).
(b) Turn the ignition switch off.
(c) Depress the brake pedal more than 40 times.
(d) Turn the ignition switch to ON.
(e) Wait for 99 seconds.
(f) Check if the same DTC is output (See page
).
|
Result |
Proceed to |
|---|---|
|
DTC is output |
A |
|
Frequent braking was not performed and DTC is not output |
B |
|
Frequent braking was performed and DTC is not output |
C |
HINT:
Excessive brake pedal operation results in abnormal accumulator pressure consumption. This is normal.
| B | .gif) |
USE SIMULATION METHOD TO CHECK |
| C | |
END |
|
|
3. |
CHECK HYDRAULIC CIRCUIT |
(a) Check the hydraulic circuit (See page ).
OK:
Hydraulic circuit is normal (no leakage).
| NG | |
REPAIR HYDRAULIC CIRCUIT |
|
|
4. |
READ VALUE USING TECHSTREAM (ACCUMULATOR SENSOR) |
| NG | |
REPLACE MASTER CYLINDER SOLENOID |
|
|
5. |
RECONFIRM DTC |
(a) Clear the DTCs (See page
).
(b) Turn the ignition switch off.
(c) Check if the same DTC is output (See page
).
|
Result |
Proceed to |
|---|---|
|
DTC is output |
A |
|
DTC is not output |
B |
| A | |
REPLACE MASTER CYLINDER SOLENOID |
| B | |
USE SIMULATION METHOD TO CHECK |
Invalid Data Received from Deceleration Sensor (C1442,C1443)
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the yaw
rate and acceleration sensor (airbag sensor assembly) via the CAN communication
system.
The airbag senso ...
Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC) (C1281,...,C1458)
DESCRIPTION
DTC Code
DTC Detection Condition
Trouble Area
C1281
Stored only during test mode.
Master cylinder pres ...
Other materials:
Rear Differential Lock Solenoid Circuit High (P17C1)
DESCRIPTION
This DTC is output when a malfunction is detected due to a battery short occurring
in the differential lock coil drive circuit of the rear differential.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17C1
...
Cruise Control Switch Circuit
DESCRIPTION
This circuit sends signals to the ECM depending on the cruise control main switch
condition.
The battery supplies the positive (+) battery voltage to the cruise control main
switch. Then terminal CCS of the ECM receives the voltage as the signal according
to the switch condition. ...
Inverter Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT INVERTER RELAY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
...
