Codes 11 & 12

This relay supplies power to each ABS solenoid. After the ignition switch is turned on, if the initial check is OK, the relay goes on.

CODES 11 & 12 CIRCUIT DESCRIPTION

Code	Diagnostic Code Detecting Condition	Trouble Area
11	Conditions [1] and [2] continue for 0.2 seconds or more:	ABS control (solenoid) relay. Open or short in ABS control (solenoid) relay circuit. ECU.
"	[1] ABS control (solenoid) relay: ON	"
"	[2] ABS control (solenoid) relay monitor terminal (AST) voltage: 0 V	"
12	Conditions [1] and [2] continue for 0.2 seconds or more:	ABS control (solenoid) relay. +B short in ABS control (solenoid)relay circuit. ECU.
"	[1] ABS control (solenoid) relay: OFF	"
"	[2] ABS control (solenoid) relay monitor terminal (AST) voltage: Battery voltage.	"

NOTE: Fail Safe Function: If trouble occurs in the control (solenoid) relay circuit, the ECU cuts off current to the ABS control (solenoid) relay and prohibits ABS control.

Fig 1: Codes 11 & 12 Wiring Schematic

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Codes 11 & 12 ABS Solenoid Relay Circuit Check (1 of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Codes 11 & 12 ABS Solenoid Relay Circuit Check (2 of 4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Codes 11 & 12 ABS Solenoid Relay Circuit Check (3 of 4)

Fig 5: Codes 11 & 12 ABS Solenoid Relay Circuit Check (4 of 4)

CODE 11 & 12 WIRE COLOR ABBREVIATIONS

Abbreviation	Wire Color
B	Black
GR-G	Gray/Green
GR-L	Gray/Blue
GR-R	Gray/Red
LG-R	Light Green/Red
R	Red
R-G	Red/Green
R-W	Red/White
W	White
W-B	White/Black
W-L	White/Blue
W-R	White/Red
Y-B	Yellow/Black