DTC C1242/42: IG2 Power Source Circuit: Description
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
If there is a problem with the master cylinder solenoid (skid control ECU) power supply circuit, the skid control ECU outputs DTCs and prohibits operation under the fail safe function.
If the voltage supplied to the IG2 terminal is not within the DTC detection threshold due to malfunctions in such as the battery and alternator circuit, this DTC is stored.
DTC DETECTION CONDITION TABLE
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1242/42 | Vehicle speed is 1.9 mph (3 km/h) or more and voltage of ECU IG2 terminal remains at below 6.5 V for more than 7 seconds. |
|