TROUBLE DIAGNOSIS FOR POWER SUPPLY; Main Power Supply and Ground Circuit — WIRING DIAGRAM; ECM TERMINALS AND REFERENCE VALUE
EF & EC-7071wiring diagramCAUTION block contains source typos verbatim: 'grond' (ground) and 'transistor' singular. Terminal 6/28/34/55 grouped under single 'B' wire-color row in source.
Main Power Supply and Ground Circuit
CG10, CGA3
WIRING DIAGRAM
NOTE
Refer to "POWER SUPPLY ROUTING" in EL section for fuse block details.
ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured using intermediate harness connector between each terminal and ground.
CAUTION
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a grond other than ECM terminals, such as the ground.
ECM Terminals — Main Power Supply and Ground Circuit
27
Wire colorW/G
ItemECM relay (Self shut-off)
Condition[Engine is running]
[Ignition switch "OFF"]
- For 1 second after turning ignition switch "OFF"
Data (DC Voltage)0 - 1 V
27
Wire colorW/G
ItemECM relay (Self shut-off)
Condition[Ignition switch "OFF"]
- 1 second passed after turning ignition switch "OFF"
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
58
Wire colorG/W
ItemIgnition switch
Condition[Ignition switch "OFF"]
Data (DC Voltage)0 V
58
Wire colorG/W
ItemIgnition switch
Condition[Ignition switch "ON"]
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
26
Wire colorY/B
ItemPower supply for ECM (Back-up)
Condition[Ignition switch "OFF"]
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)
6, 28, 34, 55
Wire colorB
ItemECM ground
Condition[Engine is running]
- Idle speed
Data (DC Voltage)Engine ground
54
Wire colorG/W
ItemPower supply for ECM
Condition[Ignition switch "ON"]
Data (DC Voltage)BATTERY VOLTAGE (11 - 14 V)