Problem Symptoms Table

WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

Check the circuits for each problem symptom in the order given in the table below .

HINT:

Inspect each circuit in numerical order for the corresponding symptom.
If the malfunction still exists even after checking and confirming that all the circuits are normal, replace the brake actuator assy.
When a malfunction is found in the skid control ECU, replace the brake actuator assy.
When the tire pressure warning lamp blinks and the ABS warning lamp comes on, check the ABS system first.

PROBLEM SYMPTOMS TABLE - TIRE PRESSURE WARNING SYSTEM

Symptom	Suspect Area
Tire pressure warning lamp does not come on after ignition switch is turned ON.	2. Tire pressure warning lamp circuit 3. Brake actuator assy
Tire pressure warning lamp remains on after ignition switch is turned ON. HINT: System abnormal 1 is detected.	Tire pressure warning lamp circuit Brake actuator assy
Tire pressure warning lamp blinks at 0.5 sec. intervals. HINT: System abnormal 2 is detected.	Stop lamp switch circuit Vehicle speed sensor ABS system malfunction
Tire pressure warning lamp blinks at 0.25 sec. intervals. HINT: ECU requires initialization.	Initialize the tire pressure warning system Brake actuator assy
ECU is initialized (tire pressure warning switch is ON), but tire pressure warning lamp remains lit.	Check initialization Tire pressure warning reset switch circuit Brake actuator assy
Tire pressure warning lamp comes on while driving, but lamp goes off without supplying tire air pressure.	Check tire pressure warning lamp Tire pressure warning lamp circuit Brake actuator assy HINT: Tire pressure may be affected by the driving environment. When any of the detected pressures reach standard tire pressure value, the warning lamp may go OFF.
Tire pressure warning lamp comes on, but tire air pressure is within the standard value.	Check if vehicle has the appropriate size tire. Ambient temperature sensor circuit Tire pressure warning lamp circuit Brake actuator assy HINT: Using inappropriate size tires, or not using the indicated tires. Tire pressure is not adjusted at initialization.
Tire pressure warning lamp remains off, even when tire air pressure decreased.	Check if vehicle has the appropriate size tires. Ambient temperature sensor circuit Tire pressure warning lamp circuit Brake actuator assy HINT: Using inappropriate size tires. Tire pressure may be affected by the driving environment. Since tire pressure decreases in cold weather, the pressure warning lamp may come on. Tire pressure is not adjusted at initialization.
Tire pressure warning lamp comes on while driving, and lamp remains lit after correcting tire pressure.	Check tire pressure warning lamp Tire pressure warning lamp circuit Ambient temperature sensor circuit Brake actuator assy
Test mode cannot be completed (only VSC system).	ABS system malfunction TS terminal circuit Brake actuator assy