Problem Symptoms Table

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Use the table below 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 CHART

Symptom	Suspected Area	See
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	DIAGNOSIS SYSTEM
	2. IG power source circuit	DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE
	3. Speed sensor circuit	DTC C0200/31 RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0205/32 LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0210/33 RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0215/34 LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 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	ON-VEHICLE INSPECTION
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	DIAGNOSIS SYSTEM
	2. Speed sensor circuit	DTC C0200/31 RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0205/32 LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0210/33 RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0215/34 LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 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	ON-VEHICLE INSPECTION
ABS warning light abnormal	ABS warning light circuit	ABS WARNING LIGHT CIRCUIT
ABS warning light abnormal	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 CIRCUIT
	2. VSC OFF indicator light, center diff. lock indicator switch circuit	VSC TRAC WARNING 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	TS CG AIVD Terminal circuit	TS AND CG TERMINAL CIRCUIT
Speed sensor signal check cannot be done	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	DIAGNOSIS SYSTEM
	2. IG power source circuit	DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE
	3. Check the hydraulic circuit for leakage	HYDRAULIC BRAKE BOOSTER
	4. Speed sensor circuit	DTC C0200/31 RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0205/32 LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0210/33 RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0215/34 LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 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	DIAGNOSIS SYSTEM
	2. IG power source circuit	DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE
	3. Check the hydraulic circuit for leakage	HYDRAULIC BRAKE BOOSTER
	4. Speed sensor circuit	DTC C0200/31 RIGHT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0205/32 LEFT FRONT WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0210/33 RIGHT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C0215/34 LEFT REAR WHEEL SPEED SENSOR SIGNAL MALFUNCTION; DTC C1235/35 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR RH; DTC C1236/36 FOREIGN OBJECT IS ATTACHED ON TIP OF FRONT SPEED SENSOR LH; DTC C1238/38 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR RH; DTC C1239/39 FOREIGN OBJECT IS ATTACHED ON TIP OF REAR SPEED SENSOR LH
	5. Deceleration sensor circuit	DTC C1246/46 MASTER CYLINDER PRESSURE SENSOR MALFUNCTION
	6. Yaw rate sensor circuit	DTC C1233/33 OPEN OR SHORT CIRCUIT IN YAW RATE SENSOR CIRCUIT; DTC C1234/34 YAW RATE SENSOR MALFUNCTION
	7. Steering angle sensor circuit	DTC C1231/31 STEERING ANGLE SENSOR CIRCUIT MALFUNCTION; DTC C1335/35 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	IN-42
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