Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001D0B9
Model Year Start: 2019 Model: GR Corolla Prod Date Range: [06/2018 - 11/2022]
Title: NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier; 2019 - 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 11/2022]

Voice Guidance Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

This circuit is used when the voice switch of the steering pad switch assembly is pushed.

Using this circuit, the radio and display receiver assembly sends signals to the stereo component amplifier assembly.

WIRING DIAGRAM

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - STEREO COMPONENT AMPLIFIER ASSEMBLY)

(a) Disconnect the I71 radio and display receiver assembly connector.

(b) Disconnect the I68 stereo component amplifier assembly connector.

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

Standard Resistance:

Tester connection

Condition

Specified condition

I71-3 (RL+) - I68-15 (II1+)

Always

Below 1 Ω

I71-8 (RL-) - I68-14 (II1-)

Always

Below 1 Ω

I68-18 (SLD1) - Body ground

Always

10 kΩ or higher

I71-3 (RL+) or I68-15 (II1+) - Body ground

Always

10 kΩ or higher

I71-8 (RL-) or I68-14 (II1-) - Body ground

Always

10 kΩ or higher

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 2019 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 - 01/2019]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 03/2019]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [03/2019 - 09/2019]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE 2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2019 - 04/2020]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE 2021 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [04/2020 - 09/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; NAVIGATION / MULTI INFO DISPLAY: NAVIGATION SYSTEM: PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR