Tire Pressure Warning System Diagnosis System
CHECK BATTERY VOLTAGE
CHECK DLC3
DIAGNOSIS SYSTEM
CHECK TIRE PRESSURE WARNING LIGHT
TIRE PRESSURE WARNING LIGHT CHART
Tire Pressure Warning System -- Diagnosis System |
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
- Standard voltage:
- 11 to 14 V
Warning light
When there is a problem with the tire pressure warning system, the tire pressure warning light blinks at 0.5 second intervals, and comes on after 1 minute.
- NOTICE:
- When the malfunction has been corrected, the tire pressure warning light does not come on.
DTCs (Normal mode)
DTCs are memorized in the tire pressure warning ECU and read by the blinks of the tire pressure warning light or by using the Techstream (COROLLA_ZRE142 RM000000XMX089X.html).
Test mode
By switching from normal mode into test mode (input signal check), you can inspect the tire pressure warning antenna and receiver, each tire pressure warning valve and transmitter, engine speed signal and vehicle speed sensor (COROLLA_ZRE142 RM000000XN008IX.html).
| CHECK TIRE PRESSURE WARNING LIGHT |
Turn the ignition switch to ON.
Check that the tire pressure warning light comes on for 3 seconds.
If the warning check result is not normal, proceed to the troubleshooting for the tire pressure warning light circuit (COROLLA_ZRE142 RM000000XN305SX.html).
| TIRE PRESSURE WARNING LIGHT CHART |
- HINT:
- The table below indicates the state of the tire pressure warning light after the ignition switch is turned to ON.
| Immediately after turning the ignition switch ON
| Always
|
Warning light output pattern
|
Comes on for 3 sec.
| Goes off
| Comes on
| Blinks for 1 minute and then illuminates (*1)
| Blinks (*2)
| Blinks (*3)
| Blinks (*4)
| Outputs DTC
|
Normal
| ○
| ○
| -
| -
| -
| -
| -
| -
|
Low tire pressure
| ○
| -
| ○
| -
| -
| -
| -
| -
|
System fail
| ○
| -
| -
| ○
| -
| -
| -
| -
|
Test mode
| ○
| -
| -
| -
| ○
| -
| -
| -
|
Initialization
| ○
| -
| -
| -
| -
| ○
| -
| -
|
ECU connector poorly connected
| -
| -
| -
| ○
(*5)
| -
| -
| -
| -
|
TC ground (DTC is output)
| ○
| -
| -
| -
| -
| -
| -
| ○
|
TC ground (DTC is not output)
| ○
| -
| -
| -
| -
| -
| ○
| -
|
- *1: Comes on and goes off repeatedly at 0.5 second intervals, and stays on after 1 minute.
- *2: Comes on and goes off repeatedly at 0.125 second intervals.
- *3: Blinks 3 times (1 second on, 1 second off).
- *4: Comes on and goes off repeatedly at 0.25 second intervals.
- *5: When determining if there is a short circuit (10 seconds), the light is off. Then it blinks at 0.5 second intervals, and stays on after 1 minute.
