Problem Symptoms Table

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Use VEHICLE STABILITY CONTROL SYSTEM to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

VEHICLE STABILITY CONTROL SYSTEM

Symptom	Suspected area	Reference
ABS does not operate, BA does not operate	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU	-
	1. Reconfirm the DTC and check that the normal code is output	DTC CHECK/CLEAR
	2. IG power source circuit	DTC C1257/57: IG POWER SOURCE
	3. Speed sensor circuit	DTC C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39: RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH
	4. Check the hydraulic brake booster with a checker or intelligent tester	HYDRAULIC BRAKE BOOSTER
	If abnormal, check the hydraulic circuit for leakage	BRAKE FLUID
ABS does not operate efficiently, BA does not operate	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU	-
	1. Reconfirm the DTC and check that the normal code is output	DTC CHECK/CLEAR
	2. Speed sensor circuit	DTC C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39: RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH
	3. Stop light switch circuit	DTC C1249/49: OPEN IN STOP LIGHT SWITCH CIRCUIT
	4. Check the hydraulic brake booster with a checker or intelligent tester	HYDRAULIC BRAKE BOOSTER
	If abnormal, check the hydraulic circuit for leakage	BRAKE FLUID
ABS warning light abnormal	1. ABS warning light circuit	ABS WARNING LIGHT REMAINS ON
ABS warning light abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
DTC check cannot be done	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU	-
	1. ABS warning light circuit	ABS WARNING LIGHT REMAINS ON
	2. VSC OFF indicator light, center diff. lock indicator switch circuit	VSC OFF INDICATOR LIGHT CIRCUIT
	3. Center diff. lock indicator switch circuit	DTC C1340/47: CENTER DIFFERENTIAL LOCK CIRCUIT
	4. TC and CG terminal circuit	TC AND CG TERMINAL CIRCUIT
Speed sensor signal check cannot be done	1. TS and CG Terminal circuit	TS AND CG TERMINAL CIRCUIT
Speed sensor signal check cannot be done	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
TRAC does not operate	Only when 1. to 4. are all normal and the problem is still occurring, replace the skid control ECU	-
	1. Check the DTC, reconfirming that the normal code is output	DTC CHECK/CLEAR
	2. IG power source circuit	DTC C1257/57: IG POWER SOURCE
	3. Check the hydraulic circuit for leakage	BRAKE FLUID
	4. Speed sensor circuit	DTC C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39: RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH
VSC does not operate	Only when 1. to 7. are all normal and the problem is still occurring, replace the skid control ECU	-
	1. Check the DTC, reconfirming that the normal code is output	DTC CHECK/CLEAR
	2. IG power source circuit	DTC C1257/57: IG POWER SOURCE
	3. Check the hydraulic circuit for leakage	BRAKE FLUID
	4. Speed sensor circuit	DTC C0200/31, C0205/32, C0210/33, C0215/34, C1235/35, C1236/36, C1238/38, C1239/39: RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH
	5. Deceleration sensor circuit	DTC C1244/44: OPEN OR SHORT IN DECELERATION SENSOR CIRCUIT
	6. Yaw rate sensor circuit	DTC C1233/33, C1234/34: OPEN OR SHORT CIRCUIT IN YAW RATE SENSOR CIRCUIT; YAW RATE SENSOR MALFUNCTION
	7. Steering angle sensor circuit	DTC C1231/31, C1335/35: STEERING ANGLE SENSOR CIRCUIT MALFUNCTION; STEERING ANGLE SENSOR CIRCUIT
VSC TRAC warning light abnormal	1. VSC TRAC warning light circuit	VSC TRAC WARNING LIGHT CIRCUIT
VSC TRAC warning light abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
BRAKE warning light abnormal	1. BRAKE warning light circuit	BRAKE WARNING LIGHT CIRCUIT
BRAKE warning light abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
SLIP indicator light abnormal	1. SLIP indicator light circuit	SLIP INDICATOR LIGHT CIRCUIT
SLIP indicator light abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
VSC OFF indicator abnormal	1. VSC OFF indicator light, center diff. lock switch circuit	VSC OFF INDICATOR LIGHT CIRCUIT
VSC OFF indicator abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE
TRAC indicator light abnormal	1. TRAC indicator light circuit	TRAC INDICATOR LIGHT CIRCUIT
TRAC indicator light abnormal	2. Skid control ECU	ELECTRONIC CIRCUIT INSPECTION PROCEDURE