Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.
Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. (after checking, reconnect the pin at correct position.)
Is the problem found?
![]() | ▶ Repair the trouble causing part and go to "Verification of Vehicle Repair". |
![]() | ▶ Go to "Power Circuit Inspection". |
Check HOT AT ALL TIMES power circuit voltage
IG KEY "OFF", ENGINE "OFF".
Disconnect PTC heater relay
Is the measured voltage within the specification?
![]() | ▶ Go to "2. Check IG KEY "ON" power circuit voltage" as follows. | ||||||||||||
![]() | ▶ Repair Fusible link box 40A PTC heater (5) Is the measured voltage within the specification?
Control Circuit Inspection 1. Check control circuit monitoring voltage (1) IG KEY "ON", ENGINE "OFF". (2) Disconnect PTC heater relay (5) Is the measured voltage within the specification?
2. Check open in control circuit (1) IG KEY "OFF", ENGINE "OFF". (2) Disconnect PTC heater relay (4) Is the measured resistance within the specification?
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