DTC C1259: HV Control System Regenerative Malfunction; DTC C1310: HV System Malfunction [01/2019 - 04/2020]: Description

WARNING: This page is about a different variant/trim than selected.

The skid control ECU (brake booster with master cylinder assembly) communicates with the hybrid vehicle control ECU and controls braking force according to the motor's regenerative force.

The skid control ECU (brake booster with master cylinder assembly) sends enhanced-VSC signals to the hybrid vehicle control ECU and receives operating signals from the hybrid vehicle control ECU.

The skid control ECU (brake booster with master cylinder assembly) uses CAN communication for communicating with the hybrid vehicle control ECU. If a communication malfunction is detected, the skid control ECU (brake booster with master cylinder assembly) prohibits enhanced-VSC operation, brake hold operation and part of the electronically controlled brake system control as a fail-safe function.

If the signals from the hybrid vehicle control ECU return to normal, the warning light will go off and the DTCs C1259 and C1310 will be cleared.

HINT:

These DTCs will be output from the skid control ECU (brake booster with master cylinder assembly) when the hybrid vehicle control ECU sends a malfunction signal to the skid control ECU (brake booster with master cylinder assembly).

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	MIL	Note
C1259	HV Control System Regenerative Malfunction	1132	A regeneration malfunction signal is input for at least 0.036 seconds when IG2 terminal voltage is 9.5 V or more for at least 2 seconds and communication with the hybrid vehicle control ECU is valid.	Hybrid vehicle control ECU (Regeneration malfunction) Skid control ECU (brake booster with master cylinder assembly)	Does not come on	Electronically controlled brake system DTC HINT: The DTC is cleared when the conditions return to normal.
C1310	HV System Malfunction	1140 1141	INF Code: 1140 When the IG2 terminal voltage is 9.5 V or more for 2 seconds or more and communication with the hybrid vehicle control ECU is possible, an internal malfunction signal is detected for 0.072 seconds or more. INF Code: 1141 The hybrid control malfunction signal is received for at least 0.072 seconds from hybrid vehicle control ECU.	INF Code: 1140 Hybrid vehicle control ECU (VSC malfunction) Skid control ECU (brake booster with master cylinder assembly) INF Code: 1141 Hybrid vehicle control ECU (Brake hold control malfunction) Skid control ECU (brake booster with master cylinder assembly)	Does not come on	INF Code 1140: VSC DTC HINT: The DTC is cleared when the conditions return to normal. INF Code 1141: Brake hold DTC HINT: The DTC is cleared when the conditions return to normal.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

MIL

Note

C1259

HV Control System Regenerative Malfunction

1132

A regeneration malfunction signal is input for at least 0.036 seconds when IG2 terminal voltage is 9.5 V or more for at least 2 seconds and communication with the hybrid vehicle control ECU is valid.

Hybrid vehicle control ECU (Regeneration malfunction)
Skid control ECU (brake booster with master cylinder assembly)

Does not come on

Electronically controlled brake system DTC
HINT:
The DTC is cleared when the conditions return to normal.

C1310

HV System Malfunction

1140
1141

INF Code: 1140
- When the IG2 terminal voltage is 9.5 V or more for 2 seconds or more and communication with the hybrid vehicle control ECU is possible, an internal malfunction signal is detected for 0.072 seconds or more.

INF Code: 1141
- The hybrid control malfunction signal is received for at least 0.072 seconds from hybrid vehicle control ECU.

INF Code: 1140
- Hybrid vehicle control ECU (VSC malfunction)
- Skid control ECU (brake booster with master cylinder assembly)
INF Code: 1141
- Hybrid vehicle control ECU (Brake hold control malfunction)
- Skid control ECU (brake booster with master cylinder assembly)

Does not come on

INF Code 1140: VSC DTC
HINT:

The DTC is cleared when the conditions return to normal.
INF Code 1141: Brake hold DTC
HINT:

The DTC is cleared when the conditions return to normal.