Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Status Signal Circuit

DESCRIPTION

This circuit sends a smart key system status signal from the certification ECU (smart key ECU assembly) to the mobile wireless charger cradle assembly. Based on this signal, the mobile wireless charger cradle assembly suspends or resumes wireless charging.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to the Registration ( PROCEDURE ).

PROCEDURE

1.

INSPECT MOBILE WIRELESS CHARGER CRADLE ASSEMBLY

(a) Measure the voltage according to the value(s) in the table below.

Text in Illustration

*a

Component with harness connected

(Mobile Wireless Charger Cradle Assembly)

Standard Voltage:

Tester Connection

Condition

Specified Condition

M5-10 (DIS) - Body ground

For 1500 ms after turning ignition switch from off to on (IG)*1

4.4 to 6.5 V

Being charged

Below 1 V

Charging suspended due to smart key system status*2

4.4 to 6.5 V

HINT:

  • *1: The mobile wireless charger cradle assembly checks the status signal for 1500 ms when the ignition switch is turned from off to on (IG). If a status signal voltage of less than 1 V continues for 400 ms or more during the check, the mobile wireless charger cradle assembly judges that the status signal is interrupted, blinks the indicators and stops the operation until the ignition switch is turned off then on (IG) again.
  • *2: For the status of the smart key system when charging is stopped temporarily, refer to System Description (See page ).
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

CHECK HARNESS AND CONNECTOR (MOBILE WIRELESS CHARGER CRADLE ASSEMBLY - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Disconnect the M5 mobile wireless charger cradle assembly connector.

(b) Disconnect the C28 certification ECU (smart key ECU assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

M5-10 (DIS) - C28-21 (ASEL)

Always

Below 1 Ω

M5-10 (DIS) - Body ground

Always

10 kΩ or higher

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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