RM3090E _59 Vehicle Exterior _008792 WINDOW / GLASS _0050343 WINDOW DEFOGGER SYSTEM U

WINDOW / GLASS  WINDOW DEFOGGER SYSTEM  TERMINALS OF ECU  


CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Automatic Air Conditioning System)


a.

Disconnect the G81 air conditioning amplifier assembly connector.

E238082E06
3.042,0.156 3.396,0.375 0.354,0.219 3.094,0.198 3.552,0.563 0.458,0.365 10 G81


b.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.


Tester Connection Wiring Color Terminal Description Condition Specified Condition
G81-1 (IG+) - G81-14 (GND) GR - W-B Power source (IG) Ignition switch ON 11 to 14 V
G81-1 (IG+) - G81-14 (GND) GR - W-B Power source (IG) Ignition switch off Below 1 V
G81-21 (B) - G81-14 (GND) GR - W-B Power source (+B) Always 11 to 14 V
G81-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω


c.

Reconnect the G81 air conditioning amplifier assembly connector.


d.

Measure the voltage and check for pulses according to the value(s) in the table below.

Tester Connection Wiring Color Terminal Description Condition Specified Condition
G81-38 (RDFG) - G81-14 (GND) B - W-B Rear defogger signal Ignition switch ON, rear defogger switch off 11 to 14 V
G81-38 (RDFG) - G81-14 (GND) B - W-B Rear defogger signal Ignition switch ON, rear defogger switch on Below 1 V
G81-37 (LIN1) - G81-14 (GND) B - W-B LIN communication line Ignition switch ON Pulse generation