B HOW TO USE THIS MANUAL The ground points circuit diagram shows the connections from all major parts to the respective ground points. When troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify the problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also be checked this way.
I GROUND POINT FAN MAIN Relay 5 W–B Cigarette Lighter W–B A W–B A/C Control Assembly FAN MAIN Relay 5 W–B E 3 O/D Main SW W–B A I 6 W–B Blower Motor A/C Relay No.2 5 W–B E 3 Clock W–B A A W–B W–B I 6 Blower SW A/C Relay No.3 5 W–B E 3 A A W–B Parking Brake SW Radiator Fan Motor W–B E 3 Junction Connector J 1 Headlight Cleaner Relay W–B E 2 3B 7 W–B Combination Meter Headlight LH W–B E 4 W–B Headlight RH W–B E 5 I 2 3C 7 W–B W–B Combination SW Front Fog Light RH Front Turn Signal Light RH W–B W–B E 4 E 4 W–B 3D 1 W–B Cruise Control ECU Front Clearance Light RH W–B E 5 W–B Front Fog Light LH W–B W–B 3F 3 W–B Remote Control Mirror SW Front Turn Signal Light LH W–B W–B E 6 E 4 W–B Brake Fluid Level SW 3G 13 W–B Turn Signal Flasher Front Clearance Light LH W–B W–B 3E 5 W–B W–B I 2 Defogger SW Door Lock Control SW W–B W–B W–B IA1 2 3E 6 W–B W–B B 4 I 4 W–B I 2 W–B Combination SW Door Courtesy SW RH W–B B 4 W–B W–B W–B I 5 W–B Door Lock Motor RH W–B B 4 10 EA2 I 5 W–B W–B W–B ID1 15 Unlock Warning SW Door Lock Control Relay W–B B 5 I 5 W–B Power Window Master SW W–B EA B 5 W–B Power Window Control Relay Blower Resistor W–B W–B W–B IB1 8 B 5 W–B Door Courtesy SW LH Idle–Up SW W–B I 4 I 8 B 5 W–B Door Lock Control SW A/C Amplifier W–B W–B Door Lock Motor LH 4 4 I 5 IC3 3 W–B(4A–GZE) Fuel Control SW Radio and Player BR 4 4 W–B I 5 W–B W–B Woofer Speaker Amplifier HEATER Relay 4 W–B BR Combination Meter Auto Antenna Motor BR BR 4 BA1 5 I 3 I 3 BR BR Combination Meter 4 W–B BR BR Fuel Sender W–B IB IC ∗ The system shown here is an EXAMPLE ONLY.
It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION. 2004 LEXUS LX 470 (EWD546U) 8