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Toyota Tacoma (2015-2018) Service Manual / Tire And Wheel / Tire Pressure Warning System / Initialization Switch (for Test Mode DTC) (C2198/98)

Toyota Tacoma (2015-2018) Service Manual: Initialization Switch (for Test Mode DTC) (C2198/98)

DESCRIPTION

During test mode, when the tire pressure warning reset switch is on, the tire pressure warning light comes on and when the tire pressure warning reset switch is off, the tire pressure warning light blinks at 0.125 second intervals.

DTC No.

DTC Detection Condition

Trouble Area

C2198/98

Test mode procedure is performed.
  • Tire pressure warning reset switch
  • Wire harness or connector
  • Tire pressure warning ECU and receiver

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
  • It is necessary to perform initialization (See page ) of the transmitter IDs into the tire ) after registration (See page pressure warning ECU and receiver if the ECU has been replaced. ) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.

PROCEDURE

1.

INSPECT TIRE PRESSURE WARNING RESET SWITCH

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

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

1 (INT) - 2 (E)

On

Below 1 Ω

Off

10 kΩ or higher
Text in Illustration

*a

Component without harness connected

(Tire Pressure Warning Reset Switch)

*b

On

*c

Off
NG

REPLACE TIRE PRESSURE WARNING RESET SWITCH
OK

2.

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

(a) Disconnect the T15 tire pressure warning reset switch connector and T14 tire pressure warning ECU and receiver connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T14-3 (CLSW) - T15-1 (INT)

Always

Below 1 Ω

T14-3 (CLSW) - Body ground

Always

10 kΩ or higher

T15-2 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
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