GSIC - Global Service Information Center

### DTC C1241/41 Low Battery Positive Voltage or Abnormally High Battery Positive Voltage

## for Preparation Click here

## DESCRIPTION

This is the power source circuit of the skid control ECU.
The skid control ECU has a built-in brake actuator.

DTC No. | DTC Detection Condition | Trouble Area

C1241/41

When either of following is detected:
1. Both conditions continue for at least 10 seconds

1. Vehicle speed is more than 3 km/h (2 mph)
2. IG1 terminal voltage is less than 10 V

2. All conditions continue for at least 0.2 seconds

1. Solenoid relay remains ON
2. Relay contact is open
3. IG1 terminal voltage is less than 10 V

1. Battery
2. Charging system
3. Power source circuit

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.INSPECT FUSE (ECU-IG & GAUGE)

1. Remove the ECU-IG & GAUGE fuse from the instrument panel J/B.

1. Measure the resistance of the fuse.

   Standard resistance:
     Below 1 Ω

| NG |

REPLACE FUSE

OK |

2.INSPECT BATTERY

1. Check the battery voltage.

   Standard voltage:
     11 to 14 V

   Result
   Result | Proceed to
   Battery voltage is normal (when using intelligent tester) | A
   Battery voltage is normal (when not using intelligent tester) | B
   Battery voltage is abnormal | C

| B |

Go to step 4

| C |

RECHARGE OR REPLACE BATTERY

A |

3.READ DATA LIST (ECU IG POWER VOLTAGE)

1. Using the Data List, check for proper functioning of the ECU IG power voltage.

   Skid control ECU
   Item | Measurement Item / Range (Display) | Normal Condition | Diagnostic Note
   ECU IG Power Voltage | ECU power supply voltage / TOO LOW / NORMAL / TOO HIGH | TOO HIGH: more than 14.0 V NORMAL: 10 to 14.0 V TOO LOW: Below 10 V | -

   Result
   Result | Proceed to
   Display is NORMAL | A
   Display is not NORMAL | B

| B |

Go to step 4

A |

END

4.CHECK WIRE HARNESS (SKID CONTROL ECU - BATTERY)

1. Disconnect the S2 ECU connector.

1. Turn the ignition switch ON.

1. Measure the voltage of the wire harness side connector.

   Standard voltage:

     Tester Connection | Specified Condition
     S2-25 (IG1) - Body ground | 10 to 14 V

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

5.CHECK WIRE HARNESS (SKID CONTROL ECU - BODY GROUND)

1. Disconnect the S2 ECU connector.

1. Measure the resistance of the wire harness side connector.

   Standard resistance:

     Tester Connection | Specified Condition
     S2-2 (GND1) - Body ground | Below 1 Ω
     S2-24 (GND2) - Body ground | Below 1 Ω

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

6.CHECK IF DTC OUTPUT RECURS

1. Clear the DTCs.

1. Drive the vehicle at approximately 30 km/h (19 mph) or more for 60 seconds or more.

1. Check for DTCs.

   Result
   Result | Proceed to
   DTC is output | A
   DTC is not output | B

| B |

END

A |

REPLACE BRAKE ACTUATOR ASSEMBLY