Reading Wiring Diagrams — System circuit diagram/connector diagram
Z-GI-4prose procedureMX-3 Wiring Diagram booklet. Top-left tab 'Z-GI-4', bottom-left page code 'Z-4'. Example circuit diagram (B-1a Engine Control System / Fuel Control) is illustrative only; its fine schematic detail is not transcribed.
System circuit diagram/connector diagram
These show the circuits for each system, from the power supply to the ground. The power supply side is on the upper part of the page, the ground side on the lower part. The diagrams describe circuits with the ignition switch off. Below is an explanation of the various points in the diagram.
NOTE
System code / System name: callouts identifying the system code and the system name at the top of each circuit diagram.
Connector code
The prefix letter indicates the system in which the connector is used.
Connector code
JB
SystemJoint box connections
X
SystemCommon connectors
A
SystemCharging system/starting system connectors
B
SystemEngine control system connectors
C
SystemGauge control system connectors
D
SystemWiper system connectors
E
SystemLighting system connectors
F
SystemSignal system connectors
G
SystemAir-conditioning system connectors
H
SystemTransmission control system connectors
I
SystemInterior lamp system connectors
J
SystemAudio/radio connectors
K
SystemPower window/power door lock system connectors
L
SystemRemote control mirror system connectors
M
SystemSliding sunroof system connectors
N
SystemPower steering/4-wheel steering system connectors
O
SystemAnti-lock brake system connectors
P
SystemPower seat/seat heater system connectors
Q
SystemAuto cruise control system connectors
R
SystemAuto adjusting suspension system connectors
S
SystemPassive shoulder belt control/air bag system connectors
T
SystemOthers
Y
SystemGround connector
Ground numbers
A harness ground is represented differently than a unit ground.