LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> RX 400h AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 307 (Brake Control System) >> Vehicle Stability Control System >> Problem Symptoms Table
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Problem Symptoms Table

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below .

NOTE: When replacing the skid control ECU, sensor or etc., turn the ignition switch off.

VEHICLE STABILITY CONTROL SYSTEM 

VEHICLE STABILITY CONTROL SYSTEM PROBLEM SYMPTOMS CHART

Symptom Suspected Area See
ABS, BA and/or EBD does not operate Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
IG1 power source circuit DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE 
IG2 power source circuit DTC C1242/42 IG2 POWER SOURCE CIRCUIT 
Front speed sensor circuit DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; 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 C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC); DTC C1275/75 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1276/76 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) 
Rear speed sensor circuit DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; 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; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC); DTC C1277/77 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1278/78 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) 
Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. ON-VEHICLE INSPECTION
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
ABS, BA and/or EBD does not operate efficiently Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
Front speed sensor circuit DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; 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 C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC); DTC C1275/75 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1276/76 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) 
Rear speed sensor circuit DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; 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; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC); DTC C1277/77 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1278/78 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) 
Stop light switch circuit DTC C1249/49 OPEN IN STOP LIGHT SWITCH CIRCUIT 
Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. ON-VEHICLE INSPECTION
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
VSC and/or TRAC does not operate Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
IG1 power source circuit DTC C1241/41 LOW BATTERY POSITIVE VOLTAGE 
IG2 power source circuit DTC C1242/42 IG2 POWER SOURCE CIRCUIT 
Front speed sensor circuit DTC C0200/31 FRONT SPEED SENSOR RH CIRCUIT; DTC C0205/32 FRONT SPEED SENSOR LH CIRCUIT; 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 C1271/71 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1272/72 LOW OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC); DTC C1275/75 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR RH (TEST MODE DTC); DTC C1276/76 ABNORMAL CHANGE IN OUTPUT SIGNAL OF FRONT SPEED SENSOR LH (TEST MODE DTC) 
Rear speed sensor circuit DTC C0210/33 REAR SPEED SENSOR RH CIRCUIT; DTC C0215/34 REAR SPEED SENSOR LH CIRCUIT; 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; DTC C1273/73 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1274/74 LOW OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC); DTC C1277/77 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR RH (TEST MODE DTC); DTC C1278/78 ABNORMAL CHANGE IN OUTPUT SIGNAL OF REAR SPEED SENSOR LH (TEST MODE DTC) 
Yaw rate and deceleration sensor circuit DTC C0371/71 YAW RATE SENSOR (TEST MODE DTC); DTC C1232/32 STUCK IN DECELERATION SENSOR; DTC C1234/34 YAW RATE SENSOR MALFUNCTION; DTC C1243/43 DECELERATION SENSOR STUCK MALFUNCTION; DTC C1244/44 OPEN OR SHORT IN DECELERATION SENSOR CIRCUIT; DTC C1245/45 DECELERATION SENSOR OUTPUT MALFUNCTION; DTC C1279/79 DECELERATION SENSOR OUTPUT VOLTAGE MALFUNCTION (TEST MODE DTC); DTC C1381/97 ACCELERATION SENSOR POWER SUPPLY VOLTAGE MALFUNCTION 
Steering angle sensor circuit DTC C1231/31 STEERING ANGLE SENSOR CIRCUIT MALFUNCTION; DTC C1290/66 STEERING ANGLE SENSOR ZERO POINT MALFUNCTION 
Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. ON-VEHICLE INSPECTION
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
AUTO LSD does not operate Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. ON-VEHICLE INSPECTION
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
A-TRAC does not operate Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
Check hydraulic brake booster using Techstream (Check hydraulic brake booster operation using active test function) If abnormal, check hydraulic circuit for leakage. ON-VEHICLE INSPECTION
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
DTC check cannot be performed Check for DTCs again and make sure that normal system code displayed. DTC CHECK/CLEAR 
TC and CG terminal circuit TC AND CG TERMINAL CIRCUIT 
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
Sensor signal check cannot be performed TS and CG terminal circuit TS AND CG TERMINAL CIRCUIT 
If symptoms still occur even after above circuits in suspected areas inspected and proved to be normal, replace master cylinder solenoid. DISASSEMBLY
ABS warning light remains on ABS warning light circuit ABS WARNING LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
ABS warning light does not come on ABS warning light circuit ABS WARNING LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
VSC TRAC warning light remains on VSC TRAC warning light circuit VSC TRAC WARNING LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
VSC TRAC warning light does not come on VSC TRAC warning light circuit VSC TRAC WARNING LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
BRAKE warning light remains on BRAKE warning light circuit BRAKE WARNING LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
BRAKE warning light does hot come on BRAKE warning light circuit BRAKE WARNING LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
VSC OFF indicator light remains on VSC OFF indicator light circuit VSC OFF INDICATOR LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
VSC OFF indicator light does not come on VSC OFF indicator light circuit VSC OFF INDICATOR LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
SLIP indicator light remains on SLIP indicator light circuit SLIP INDICATOR LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
SLIP indicator light does not come on SLIP indicator light circuit SLIP INDICATOR LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
AUTO LSD indicator light remains on AUTO LSD indicator light circuit AUTO LSD INDICATOR LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
AUTO LSD indicator light does not come on AUTO LSD indicator light circuit AUTO LSD INDICATOR LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
A-TRAC indicator light remains on A-TRAC indicator light circuit A-TRAC INDICATOR LIGHT REMAINS ON 
Master cylinder solenoid DISASSEMBLY
A-TRAC indicator light does not come on A-TRAC indicator light circuit A-TRAC INDICATOR LIGHT DOES NOT COME ON 
Master cylinder solenoid DISASSEMBLY
Skid control buzzer abnormal Skid control buzzer circuit SKID CONTROL BUZZER CIRCUIT 
Master cylinder solenoid DISASSEMBLY
scientia non olet · About LEMON Manuals