Toyota CH-R Service Manual: DCM Data Signal Circuit between Navigation ECU and DCM

Toyota CH-R Service Manual / Cellular Communication / Toyota Entune System / DCM Data Signal Circuit between Navigation ECU and DCM

DESCRIPTION

This circuit is used to send and receive signals between the DCM (Telematics Transceiver) and radio and display receiver assembly.

WIRING DIAGRAM

PROCEDURE

1.	CHECK VEHICLE TYPE

(a) Check vehicle type.

Result	Proceed to
w/ Navigation System	A
w/o Navigation System	B

GO TO STEP 5

2.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - NO. 1 NAVIGATION WIRE)

(a) Disconnect the F140 No. 1 Navigation Wire connector.

(b) Disconnect the F133 DCM (Telematics Transceiver) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F133-2 (USB+) - F140-1	Always	Below 1 Ω
F133-1 (USB-) -F140-2	Always	Below 1 Ω
F133-6 (USBS) - F140-3	Always	Below 1 Ω
F133-2 (USB+) or F140-1 - Body ground	Always	10 kΩ or higher
F133-1 (USB-) or F140-2 - Body ground	Always	10 kΩ or higher
F133-6 (USBS) or F140-3 - Body ground	Always	10 kΩ or higher

REPLACE NO. 1 NAVIGATION WIRE

3.	INSPECT NAVIGATION WIRE

(a) Disconnect the G no. 1 navigation wire connector.

(b) Disconnect the H navigation ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G-1 -H-1 (USB+)	Always	Below 1 Ω
G-2 - H-2 (USB-)	Always	Below 1 Ω
G-3 - H-3 (USBS)	Always	Below 1 Ω
G-1 or H-1 (USB+) - Body ground	Always	10 kΩ or higher
G-2 or H-2 (USB-) - Body ground	Always	10 kΩ or higher
G-3 or H-3 (USBS) - Body ground	Always	10 kΩ or higher

*a	Component without harness connected (No. 1 Navigation Wire)

*a	Component without harness connected (No. 1 Navigation Wire)

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the F133 DCM (Telematics Transceiver) connector.

(b) Disconnect the F130 radio and display receiver assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
F133-5 (USBV) - F130-10 (USBV)	Always	Below 1 Ω
F133-3 (USBG) - F130-11 (USBG)	Always	Below 1 Ω
F133-9 (VOR+) - F130-15 (VOT+)	Always	Below 1 Ω
F133-8 (VOR-) - F130-16 (VOT-)	Always	Below 1 Ω
F133-4 (VOT+) - F130-13 (VOR+)	Always	Below 1 Ω
F133-7 (VOT-) - F130-14 (VOR-)	Always	Below 1 Ω
F133-5 (USBV) or F130-10 (USBV) - Body ground	Always	10 kΩ or higher
F133-3 (USBG) or F130-11 (USBG) - Body ground	Always	10 kΩ or higher
F133-9 (VOR+) or F130-15 (VOT+) - Body ground	Always	10 kΩ or higher
F133-8 (VOR-) or F130-16 (VOT-) - Body ground	Always	10 kΩ or higher
F133-4 (VOT+) or F130-13 (VOR+) - Body ground	Always	10 kΩ or higher
F133-7 (VOT-) or F130-14 (VOR-) - Body ground	Always	10 kΩ or higher
F130-12 (SGND) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (DCM (TELEMATICS TRANSCEIVER) - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the F133 DCM (Telematics Transceiver) connector.

*a	Front view of wire harness connector (to DCM (Telematics Transceiver))

(b) Disconnect the F130 and F136 radio and display receiver assembly connector.

*a	Front view of wire harness connector (to Radio Receiver Assembly)

Standard Resistance:

Tester Connection	Condition	Specified Condition
F133-1 (USB-) - F136-2 (USB-)	Always	Below 1 Ω
F133-2 (USB+) - F136-1 (USB+)	Always	Below 1 Ω
F133-6 (USBS) - F136-3 (USBS)	Always	Below 1 Ω
F133-3 (USBG) - F130-11 (USBG)	Always	Below 1 Ω
F133-4 (VOT+) - F130-13 (VOR+)	Always	Below 1 Ω
F133-5 (USBV) - F130-10 (USBV)	Always	Below 1 Ω
F133-7 (VOT-) - F130-14 (VOR-)	Always	Below 1 Ω
F133-8 (VOR-) - F130-16 (VOT-)	Always	Below 1 Ω
F133-9 (VOR+) - F130-15 (VOT+)	Always	Below 1 Ω
F133-1 (USB-) or F136-2 (USB-) - Body ground	Always	10 kΩ or higher
F133-2 (USB+) or F136-1 (USB+) - Body ground	Always	10 kΩ or higher
F133-6 (USBS) or F136-3 (USBS) - Body ground	Always	10 kΩ or higher
F133-3 (USBG) or F130-11 (USBG) - Body ground	Always	10 kΩ or higher
F133-4 (VOT+) or F130-13 (VOR+) - Body ground	Always	10 kΩ or higher
F133-5 (USBV) or F130-10 (USBV) - Body ground	Always	10 kΩ or higher
F133-7 (VOT-) or F130-14 (VOR-) - Body ground	Always	10 kΩ or higher
F133-8 (VOR-) or F130-16 (VOT-) - Body ground	Always	10 kΩ or higher
F133-9 (VOR+) or F130-15 (VOT+) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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