2003 Infiniti I35FACTORY OEM SERVICE PROCEDURE

Engine Compartment Harness

Fig 1: Identifying Engine Compartment Harness Routing
G00103815Courtesy of NISSAN MOTOR CO., U.S.A.
ENGINE COMPARTMENT HARNESS CONNECTOR IDENTIFICATION

Connector Name (1) Color Number Of Pins Description
Engine Compartment Harness
E1 Gray 2 Brake Fluid Level Switch
E8 Gray 8 To F17
E11 ..... ..... Body Ground
E13 Gray 1 To E200
E14 ..... ..... Battery - Fusible Link (120-Amp)
E15 Black 8 To F18
E16 Gray 2 Dropping Resistor
E17 ..... ..... Fuse & Fusible Link Box
E18 Gray 6 Joint Connector No. 7
E19 Gray 6 Joint Connector No. 8
E20 White 6 Joint Connector No. 9
E21 White 6 Joint Connector No. 10
E22 ..... ..... Body Ground
E23 Brown 2 Left Front Side Marker Light
E24 Brown 2 Left Front Turn Signal
E25 Black 2 Left Front Fog Light
E26 Gray 2 Hood Switch
E27 Brown 6 Cooling Fan Relay No. 1
E28 Brown 6 Cooling Fan Relay No. 2
E31 Brown 6 Cooling Fan Relay No. 3
E32 Brown 6 ECM Relay
E34 Gray 6 Park/Neutral Position Relay
E36 Black 2 Left High Beam Headlight
E37 Black 3 Refrigerant Pressure Sensor
E38 Gray 4 Cooling Fan Motor No. 1
E40 Black 1 Horn (High)
E41 Gray 2 Front Washer Motor
E42 Brown 2 Washer Level Switch
E43 Gray 4 Cooling Fan Motor No. 2
E44 Black 2 Right Front Fog Lamp
E45 Brown 2 Right Front Turn Signal
E46 ..... ..... Generator
E47 ..... ..... Generator
E48 ..... ..... Body Ground
E49 Brown 2 Right Front Side Marker
E50 Black 2 Right Headlight (High Beam)
E51 Gray 3 To A1
E53 ..... ..... Body Ground
E54 Black 1 Vehicle Security Horn
E55 Black 2 Ambient Sensor
E56 Gray 4 Daytime Light Control Unit (Canada)
E57 Gray 6 Daytime Light Control Unit (Canada)
E59 Gray 8 Daytime Light Control Unit (Canada)
E62 Blue 4 Tail Lamp Relay
E63 Blue 4 Vehicle Security Horn Relay No. 2
E64 Blue 4 Front Fog Lamp Relay
E66 White 3 Horn Relay
E69 Blue 4 Door Mirror Defogger Relay (If Equipped)
E70 Blue 4 Vehicle Security Horn Relay No. 1
E71 Blue 4 A/C Relay
E73 White 6 Joint Connector No. 12
E74 White 6 Joint Connector No. 13
E75 White 6 Joint Connector No. 14
E78 Gray 6 Front Wiper Motor
E106 Gray 2 Left Headlight (Low Beam)
E109 Black 2 Left Parking Lamp
E111 ..... ..... Body Ground
E113 Gray 2 Right Headlight (Low Beam)
E115 Black 2 Right Parking Lamp
E116 Brown 2 Left Cornering Lamp
E117 Brown 2 Right Cornering Lamp
E120 Brown 6 Left Headlight Relay (Canada)
E121 Brown 6 Left Headlight Relay (USA)
E123 Brown 6 Right Headlight Relay (Canada)
E124 Brown 6 Right Headlight Relay (USA)
E126 Blue 4 Cornering Lamp Relay
E148 Yellow 2 Crash Zone Sensor
E149 ..... ..... Body Ground
E160 Gray 2 Right Front Wheel Sensor (With VDC)
E161 Blue 4 Throttle Control Motor Relay
E162 Black 31 ABS/TCS Control Unit (With TCS)
E163 Blue 2 Left Front Wheel Sensor (With TCS)
E164 Gray 2 Right Front Wheel Sensor (With TCS)
E165 Black 2 VDC Relay Box (With VDC)
E166 Black 8 VDC Relay Box (With VDC)
E167 Brown 2 Left Front Wheel Sensor (With VDC)
E168 Black 8 ABS Actuator (With VDC)
E169 Gray 8 ABS Actuator (With VDC)
Engine Compartment Sub-Harness
E200 Gray 1 To E13
E201 Gray 1 Starter Motor
E202 ..... ..... Starter Motor
Generator Harness
A1 Gray 3 To E51
A2 Gray 4 Generator
A3 Black 1 Compressor
(1) For locations, see Fig 1 .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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