Toyota RAV4 manuals

Toyota Sienna Service Manual: Tire Pressure Warning Reset Switch Circuit

DESCRIPTION

The ECU enters the initialization mode and performs initialization automatically, when the tire pressure warning ECU receives the signal from the tire pressure warning reset switch. If the ECU receives the signal, the tire pressure warning light blinks 3 times (1 second on, 1 second off).

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK TIRE PRESSURE WARNING RESET SWITCH FUNCTION

(a) Perform the tire pressure warning reset switch test in TEST MODE PROCEDURE (See page TW-25).

OK: Reset switch ON: Tire pressure warning light comes on.

Reset switch OFF: Tire pressure warning light blinks.

END

2 INSPECT TIRE PRESSURE WARNING RESET SWITCH

INSPECT TIRE PRESSURE WARNING RESET SWITCH

(a) Disconnect the tire pressure warning reset switch connector.

(b) Measure the resistance between terminals 1 and 2 of the tire pressure warning reset switch when the tire pressure warning switch is ON and OFF.

Standard resistance

3 CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING RESET SW - TIRE PRESSURE WARNING ECU)

CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING RESET SW - TIRE PRESSURE WARNING ECU)

(a) Disconnect the tire pressure warning reset switch T4 connector and tire pressure warning ECU T15 connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance

REPLACE TIRE PRESSURE WARNING ECU (See page TW-87)

Vehicle Speed Signal Error (Test Mode DTC)
DTC C2191/91 Vehicle Speed Signal Error (Test Mode DTC) DESCRIPTION The tire pressure warning ECU receives a speed signal from the combination meter. This DTC is stored upon entering test mode, a ...

Tire Pressure Warning Light Circuit
DESCRIPTION If the ECU detects trouble, the tire pressure warning light blinks (comes on after blinking for 1 minute) and tire pressure monitor is cancelled at the same time. At this time, the ECU ...

Other materials:

Check that initialization has been completed
(a) Confirm that the data of tire pressure of all tires are displayed on the intelligent tester screen. Tester Display Measurement Item/Range Normal Condition Diagnostic Note TIREPRESS1 ID1 tire inflation pressure (Absolute pressure) / min.: 100 kPa (1 kgf/cm2, 14 ...

Adjustment
HINT: If the malfunction does not disappear by following the procedure in ADJUSTMENT and the rear No. 2 seat assembly needs to be replaced, do not disassemble the rear No. 2 seat assembly. 1. ADJUST FRONT LEG HINT: Perform the following procedure if the inner leg does not lock. P ...

Hydraulic test
1. Perform hydraulic test (a) Measure the line pressure. NOTICE: Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C (122 to 176°F). The line pressure test should always be carried out in pairs. One technician should ...

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