Toyota CH-R Service Manual: Terminals Of Ecu

Toyota CH-R Service Manual / Window / Glass / Windshield Deicer System / Terminals Of Ecu

TERMINALS OF ECU

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for TMMT Made)

(a) Disconnect the F72 air conditioning amplifier assembly connector.

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
F72-5 (IG+) - Body ground	B - Body ground	Power source (IG)	Ignition switch ON	11 to 14 V
F72-5 (IG+) - Body ground	B - Body ground	Power source (IG)	Ignition switch off	Below 1 V
F72-1 (B) - Body ground	V - Body ground	Battery power supply	Always	11 to 14 V
F72-29 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
F72-24 (FDEF) - Body ground	W - Body ground	Wiper deicer signal	Ignition switch ON, windshield deicer switch on	Below 1 V
F72-24 (FDEF) - Body ground	W - Body ground	Wiper deicer signal	Ignition switch ON, windshield deicer switch off	11 to 14 V
F72-3 (LIN1) - Body ground	L - Body ground	LIN communication line	Ignition switch ON	Pulse generation

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for TMC Made)

(a) Disconnect the F139 air conditioning amplifier assembly connector.

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
F139-2 (IG+) - Body ground	B - Body ground	Power source (IG)	Ignition switch ON	11 to 14 V
F139-2 (IG+) - Body ground	B - Body ground	Power source (IG)	Ignition switch off	Below 1 V
F139-1 (B) - Body ground	V - Body ground	Battery power supply	Always	11 to 14 V
F139-4 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

Tester Connection	Wiring Color	Terminal Description	Condition	Specified Condition
F139-17 (FDEF) - Body ground	W - Body ground	Wiper deicer signal	Ignition switch ON, windshield deicer switch on	Below 1 V
F139-17 (FDEF) - Body ground	W - Body ground	Wiper deicer signal	Ignition switch ON, windshield deicer switch off	11 to 14 V
F139-14 (LIN1) - Body ground	BE - Body ground	LIN communication line	Ignition switch ON	Pulse generation

CHECK AIR CONDITIONING CONTROL ASSEMBLY

(a) Check for pulse according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F61-2 (LIN1) - F61-16 (GND)	L - W-B1 BE - W-B2	LIN communication line	Ignition switch ON	Pulse generation

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F61-2 (LIN1) - F61-16 (GND)

L - W-B*1

BE - W-B*2

LIN communication line

Ignition switch ON

Pulse generation

*1: for TMMT Made
*2: for TMC Made

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Toyota CH-R Service Manual: Terminals Of Ecu

Problem Symptoms Table

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