BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1211,C1212,C1225,C1226; SLA Linear Solenoid; 2018 MY Camry HV [07/2017

Last Modified: 11-20-2023	6.11:8.1.0	Doc ID: RM1000000014VM7
Model Year Start: 2018	Model: Camry HV	Prod Date Range: [07/2017 - 09/2018]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1211,C1212,C1225,C1226; SLA Linear Solenoid; 2018 MY Camry HV [07/2017 - 09/2018]

DTC

C1211

SLA Linear Solenoid

DTC

C1212

SLR Linear Solenoid

DTC

C1225

SA1 Solenoid Circuit

DTC

C1226

SA2 Solenoid Circuit

DESCRIPTION

The linear solenoids SLA and SLR control the regulator based on signals from the skid control ECU (brake booster with master cylinder assembly) and produce servo pressure in accordance with the vehicle condition.

When the system is normal, the switching solenoid SGH is opened to allow brake fluid to flow to the stroke simulator when the brake pedal is depressed. When the system is abnormal, the switching solenoid SGH closes to prevent the flow of brake fluid.

When the system is normal, the switching solenoid SSA is closed. When the system is abnormal, the switching solenoid SSA is opened to allow fluid to flow to the brake master cylinder reservoir assembly.

HINT:

If the supply voltage decreases, a drop in current may cause DTCs to be stored.
DTC C1225 indicates a malfunction related to solenoid SSA, and DTC C1226 indicates a malfunction related to solenoid SGH.

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	Note
C1211	SLA Linear Solenoid	21 22 23 24 25 26	INF Code: 21 Overcurrent is detected in the solenoid for 0.05 seconds or more. INF Code: 22 An open is detected in the solenoid for 0.05 seconds or more. INF Code: 23 An excessive current is detected in the solenoid for 0.05 seconds or more. INF Code: 24 Current leakage is detected in the solenoid for 0.05 seconds or more. INF Code: 25 A malfunction in the solenoid current monitoring circuit is detected for 0.05 seconds or more. INF Code: 26 Insufficient current is detected in the solenoid for 0.05 seconds or more.	INF Code: 21, 22, 24 Brake booster with master cylinder assembly INF Code: 23 Supply voltage reduced Brake booster with master cylinder assembly INF Code: 25, 26 Brake booster with master cylinder assembly	Electronically controlled brake system DTC
C1212	SLR Linear Solenoid	31 32 33 34 35 36	INF Code: 31 Overcurrent is detected in the solenoid for 0.05 seconds or more. INF Code: 32 An open is detected in the solenoid for 0.05 seconds or more. INF Code: 33 An excessive current is detected in the solenoid for 0.05 seconds or more. INF Code: 34 Current leakage is detected in the solenoid for 0.05 seconds or more. INF Code: 35 A malfunction in the solenoid current monitoring circuit is detected for 0.05 seconds or more. INF Code: 36 Insufficient current is detected in the solenoid for 0.05 seconds or more.	INF Code: 31, 32, 34 Brake booster with master cylinder assembly INF Code: 33 Supply voltage reduced Brake booster with master cylinder assembly INF Code: 35, 36 Brake booster with master cylinder assembly	Electronically controlled brake system DTC
C1225	SA1 Solenoid Circuit	41 42 43 44 45 46	INF Code: 41 Overcurrent is detected in SSA for 0.05 seconds or more. INF Code: 42 An open is detected in SSA for 0.05 seconds or more. INF Code: 43 Monitoring value of SSA continues to be excessively higher than request value. INF Code: 44 Current leakage is detected in SSA for 0.05 seconds or more. INF Code: 45 A malfunction in the SSA current monitoring circuit is detected for 0.05 seconds or more. INF Code: 46 Monitoring value of SSA continues to be excessively lower than request value.	INF Code: 41, 42, 44 Brake booster with master cylinder assembly INF Code: 43 Supply voltage reduced Brake booster with master cylinder assembly INF Code: 45, 46 Brake booster with master cylinder assembly	Electronically controlled brake system DTC
C1226	SA2 Solenoid Circuit	71 72 73 74 75 76	INF Code: 71 Overcurrent is detected in SGH for 0.05 seconds or more. INF Code: 72 An open is detected in SGH for 0.05 seconds or more. INF Code: 73 Monitoring value of SGH continues to be excessively higher than request value. INF Code: 74 Current leakage is detected in SGH for 0.05 seconds or more. INF Code: 75 A malfunction in the SGH current monitoring circuit is detected for 0.05 seconds or more. INF Code: 76 Monitoring value of SGH continues to be excessively lower than request value.	INF Code: 71, 72, 74 Brake booster with master cylinder assembly INF Code: 73 Supply voltage reduced Brake booster with master cylinder assembly INF Code: 75, 76 Brake booster with master cylinder assembly	Electronically controlled brake system DTC

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

Click here

PROCEDURE

CHECK DTC

(a) Clear the DTCs.

Chassis > ABS/VSC/TRAC > Clear DTCs

(b) Turn the power switch off.

(d) Check if the same DTC is output.

Chassis > ABS/VSC/TRAC > Trouble Codes

HINT:

If a DTC for undervoltage is output, first troubleshoot the power source system.

Result	Proceed to
DTCs C1211, C1212, C1225 and C1226 are not output.	A
A DTC related to low voltage is output.	B
DTCs C1211, C1212, C1225 and/or C1226 are output.	C

USE SIMULATION METHOD TO CHECK

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY