Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N4Q0
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 - 09/2022]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): B153711,B153713; Telephone Sub Antenna Circuit Short to Ground; 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]

DTC

B153711

Telephone Sub Antenna Circuit Short to Ground

DTC

B153713

Telephone Sub Antenna Circuit Open

DESCRIPTION

These DTCs are stored when a malfunction occurs in the telephone and GPS antenna (for Front Side).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B153711

Telephone Sub Antenna Circuit Short to Ground

Telephone antenna (sub) impedance (Ω) is lower than the malfunction threshold for 10 seconds or more when the power switch is on (IG)

(Short circuit)

  • DCM (telematics transceiver)
  • Telephone and GPS antenna (for Front Side)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)

B153713

Telephone Sub Antenna Circuit Open

Telephone antenna (sub) impedance (Ω) is higher than the malfunction threshold for 10 seconds or more when the power switch is on (IG)

(Open circuit)

  • DCM (telematics transceiver)
  • Telephone and GPS antenna (for Front Side)
  • Telephone and GPS antenna cord (No. 2 antenna cord sub-assembly)

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): PRECAUTION

HINT:

Refer to "PARTS LOCATION" for the installation location of telephone and GPS antenna cord.

Click here 2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): PARTS LOCATION

PROCEDURE

1.

CHECK DTC

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG) and wait for 10 seconds or more.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

INSPECT TELEPHONE AND GPS ANTENNA (FOR FRONT SIDE)

(a) Remove the telephone and GPS antenna (for Front Side).

Click here 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION ANTENNA: REMOVAL

*a

Component without harness connected

(Telephone and GPS Antenna (for Front Side))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 - 4a

Always

4 to 11 kΩ

NG

REPLACE TELEPHONE AND GPS ANTENNA (FOR FRONT SIDE)

OK

3.

INSPECT TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY)

(a) Disconnect the D telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.

*a

Component without harness connected

(Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

(b) Disconnect the A telephone and GPS antenna cord (No. 2 antenna cord sub-assembly) connector.

*a

Component without harness connected

(Telephone and GPS Antenna Cord (No. 2 Antenna Cord Sub-assembly))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D-4 - A-1

Always

Below 1 Ω

D-4 or A-1 - Body ground

Always

10 kΩ or higher

D-4a - A-1a

Always

Below 1 Ω

D-4a or A-1a - Body ground

Always

10 kΩ or higher

NG

REPLACE TELEPHONE AND GPS ANTENNA CORD (NO. 2 ANTENNA CORD SUB-ASSEMBLY)

OK

4.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020 - 09/2022]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

  • The power switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION