Power and Ground Distribution: Locations

NOTE: All ground wires are BLK unless otherwise noted.

Ground Component or Circuit Grounded

G1 Battery
Transmission housing
G5 Cylinder head cover
PSP switch bracket

G101 ATTS control unit (PG1, PG2)
ATTS control unit (LG1, LG2: BRN/BLK)
Data link connector (BRN/BLK)
ECM (PG1, PG2)
ECM (LG1, LG2: BRN/BLK)
Left solenoid (with ATTS)
PGM-FI main relay
PSP pressure switch
Radiator fan switch
Right solenoid (with ATTS)
Shift control solenoid valve B, C (A/T)
TCM (PG1)
TCM (LG1, LG2: BRN/BLK)
Vehicle speed sensor
VTEC pressure switch
Shielding between ECM and knock sensor (BRN/BLK)
Shielding between ECM and primary and secondary heated oxygen sensor
Shielding between ECM and TDC/CKP sensor
Shielding between ECM and CYP sensor
Shielding between TCM and countershaft speed sensor
Shielding between TCM and mainshaft speed sensor

G201 Radiator fan motor
Right headlight (low beam)
Right front parking light
Right front turn signal light
Right front side marker light

G301 Brake fluid level switch
Condenser fan motor
Intermittent wiper relay
Left headlight (low beam)
Left front parking light
Left front turn signal light
Left front side marker light
Windshield wiper motor
Windshield washer motor

G302 ABS pump motor

G401 Accessory socket relay
Accessory socket
A/T gear position indicator circuit
Blower motor relay
Ceiling light/spotlight
Clutch switch (M/T)
Clutch interlock switch (M/T)
Clock
Combination light switch
Cruise main switch
Cruise control unit
Driver's window motor
Driver's door lock switch
Driver's door key cylinder switch
Driver's seat heater switch (Canada)
ELD unit
Gauge assembly
Horns
Ignition key switch
Immobilizer control unit
Moon roof switch
Moon roof open/close relay
Multiplex control unit (driver's, passenger's, door)
Power mirror switch
Power window relay
Security alarm system (Canada: optional)
Turn signal/hazard relay
- plus everything grounded through G4O2


G402 ABS fail-safe relay
Daytime running lights control unit (Canada)
Dimmer relay
Driver's door lock actuator
Left power mirror defogger (Canada)
Multiplex control unit (driver's, passenger's, door)
Multiplex control inspection connector
Passenger's door lock switch
Passenger's door key cylinder switch
Passenger's seat heater switch (Canada)
Right power mirror defogger (Canada)
Seat heater relay (Canada)

G403 ABS control unit (2 wires)

G404 ABS control unit (2 wires)

G471 Ashtray light (optional)
A/T gear position switch
Cruise control actuator
Data link connector
EVAP purge flow switch
Mode switch (A/T)
Parking pin switch (A/T)
Shift lock relay (A/T)

G501 Driver's seat belt switch
Fuel gauge sending unit
Fuel pump (FP)
High mount brake light (except Type SH)
Seat heater (driver's, passenger's)
Stereo amplifier
Shielding
between stereo amplifier and left rear microphone

G551 Audio unit

G601 High mount brake light (Type SH)
License plate light
Taillight (right, left)
Trailer lighting connector
Trunk latch switch

G801 SRS unit (2 wires)

G901 Heater control panel
Heater fan switch