DESCRIPTION
If there is a problem with the skid control ECU (master cylinder solenoid) power supply circuit, the skid control ECU outputs the DTC and prohibits operation under the fail safe function.
If the voltage supplied to terminal IG1 and/or IG2 is not within the DTC detection threshold due to malfunctions in parts such as the battery or alternator circuit, this DTC is stored.
DTC No. |
DTC Detecting Condition |
Trouble Areas |
---|---|---|
C1242 |
Vehicle speed 3 km/h (1.9 mph) or more and voltage of skid control ECU (master cylinder solenoid) terminal IG1 and/or IG2 remains at below 6.5 V for more than 7 seconds. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
INSPECT BATTERY |
(a) Check the battery voltage.
Standard Voltage:
11 to 14 V
NG | ![]() |
GO TO CHARGING SYSTEM |
|
2. |
CHECK HARNESS AND CONNECTOR (IG2 TERMINAL) |
(a) Disconnect the skid control ECU (master cylinder solenoid) connector. |
|
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage.
Standard Voltage:
Tester Connection |
Specified Condition |
---|---|
S2-1 (IG2) - Body ground |
10 to 14 V |
*a |
Front view of wire harness connector (to Skid Control ECU (Master Cylinder Solenoid)) |
(d) Reconnect the skid control ECU (master cylinder solenoid) connector.
(e) Turn the ignition switch to OFF.
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (GND TERMINAL) |
(a) Disconnect the skid control ECU (master cylinder solenoid) connectors. |
|
(b) Measure the resistance.
Standard Resistance:
Tester Connection |
Specified Condition |
---|---|
S1-1 (GND1) - Body ground |
Below 1 Ω |
S1-32 (GND2) - Body ground |
Below 1 Ω |
S2-4 (GND3) - Body ground |
Below 1 Ω |
(c) Reconnect the skid control ECU (master cylinder solenoid) connectors.
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
RECONFIRM DTC |
(a) Clear the DTCs (See page
).
(b) Drive the vehicle at a speed of 3 km/h (1.9 mph) or more for 7 seconds or more.
(c) Check if the same DTCs are detected.
Result |
Proceed to |
---|---|
DTC output |
A |
DTC not output |
B |
A | ![]() |
REPLACE MASTER CYLINDER SOLENOID |
B | ![]() |
END |
Internal Control Module EEPROM Data Memory Failure (P062F44)
DESCRIPTION
The ECM monitors its internal operation and it will set this DTC when it detects
an internal malfunction.
DTC No.
DTC Detection Condition
Trouble Area
SAE
P062F44
ECM internal error (EEPROM)
ECM
...
Brake Warning Light Remains ON
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination
meter assembly via CAN communication.
If any of the following is detected, the brake warning light remains on:
The skid control ECU (brake actuator assembly) connector is disconnected
from the ...
Clutch start cancel switch
The switch allows the vehicle to be driven out of difficult situations by cranking
the engine with the clutch engaged.
Never use the switch for normal engine starting. Be sure to follow the starting
procedure.
Press the CLUTCH START CANCEL switch to cancel the clutch start system when the
...