DTC C13AD: Open in +B Circuit [10/2020 - 10/2023]: Description
The parking brake ECU assembly is supplied with power to operate the motor via the +B terminals.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory | Note |
|---|---|---|---|---|---|
| C13AD | Open in +B Circuit |
|
|
Yes | An electric parking brake system malfunction is displayed on the multi-information display. |
DTC DETECTION CONDITION COMBINATION TABLE: C13AD (PATTERN 1, PATTERN 2, PATTERN 3, PATTERN 4)
| Vehicle Condition | |||||
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | Electric parking brake switch assembly is operated to lock side with power switch off | ◦ | ◦ | ◦ | ◦ |
| Malfunction Status | +B voltage is below 8.47 V (*) when parking brake motor is not operating | ◦ | ◦ | - | - |
| +B voltage is below 3.19 V (*) when parking brake motor is not operating | - | - | ◦ | ◦ | |
| Detection Time | Not operating: Approximately 1 second | Operating: Approximately 0.5 seconds | Not operating: Approximately 1 second | Operating: Approximately 0.5 seconds | |
| Trip Count | 1 trip | 1 trip | 1 trip | 1 trip | |
DTC DETECTION CONDITION COMBINATION TABLE: C13AD (PATTERN 5, PATTERN 6, PATTERN 7, PATTERN 8)
| Vehicle Condition | |||||
| Pattern 5 | Pattern 6 | Pattern 7 | Pattern 8 | ||
| Diagnosis Condition | Power switch on (IG) | ◦ | ◦ | ◦ | ◦ |
| Malfunction Status | +B voltage is below 8.47 V (*) when parking brake motor is not operating | ◦ | ◦ | - | - |
| +B voltage is below 3.19 V (*) when parking brake motor is not operating | - | - | ◦ | ◦ | |
| Detection Time | Not operating: Approximately 1 second | Operating: Approximately 0.5 seconds | Not operating: Approximately 1 second | Operating: Approximately 0.5 seconds | |
| Trip Count | 1 trip | 1 trip | 1 trip | 1 trip | |
HINT:
- If the conditions match either of these patterns, a DTC will be output.
- *: This value is based on the assumption that the auxiliary battery voltage is 11 V.
The threshold changes according to the auxiliary battery voltage.
For details, refer to "Threshold Changes According to Auxiliary Battery Voltage".
Threshold Changes According to Auxiliary Battery Voltage
| *a | Parking Brake Motor Not Operating | *b | Parking Brake Motor Operating |
| *c | Auxiliary Battery Voltage (V) | *d | +B Terminal Voltage (V) |
| *e | Normal Range | *f | DTC Detection Range |