3.
Is the problem found?
 | ▶ Repair the trouble causing part and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection". |
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damage 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 separation, 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" procedure. |
| ▶ Go to "Power Circuit Inspection". |
IG key OFF.
Disconnect GCU connector.
IG key ON.
Check voltage between 'Memory power' terminal of GCU harness connector and chassis ground.(Measurement 1)
Check voltage between 'ON/START input' terminal of GCU harness connector and chassis ground.(Measurement 2)
Specification : 10.5V~14.5V
Is the measured value within specification?
| ▶ Go to "Check short in power circuit" as follow. |
| ▶ If no voltage detected at 'Measurement 1', repair open / short to ground between 'GLOW FUSIBLE LINK 80A' terminal in 'E/R SUB BOX' and 'Memory power' terminal of 'GLOW CONTROL MODULE', and go to 'Verification of Vehicle Repair" procedure. ▶ If no voltage detected at 'Measurement 2', repair open / short to ground between 'TCU 2 GLOW FUSE 10A' terminal in 'E/R JUNCTION BOX' and 'ON/START input' terminal of 'GLOW CONTROL MODULE', and go to "Verification of Vehicle Repair" procedure. ▶ If the measured voltage at 'Measurement 1' is higher than specification, repair short to battery between 'GLOW FUSIBLE LINK 80A' terminal in 'E/R SUB BOX' and 'Memory power' terminal of 'GLOW CONTROL MODULE', and go to 'Verification of Vehicle Repair" procedure. ▶ If the measured voltage at 'Measurement 2' is higher than specification, repair short to battery between 'TCU 2 GLOW FUSE 10A' terminal in 'E/R JUNCTION BOX' and 'ON/START input' terminal of 'GLOW CONTROL MODULE', and go to "Verification of Vehicle Repair" procedure. |
IG key OFF.
Disconnect GCU connector.
Check resistance between 'Memory Power' terminal and 'ON/START input' terminal of GCU harness connector.(Measurement 1)
Specification : Infinite (∞ Ω)
IG key ON.
Check voltage between 'ON/START input' terminal of GCU harness connector and chassis ground.(Measurement 2)
Specification : 10.5V ~ 14.5V
Is the measured value within specification?
| ▶ If 'Measurement 1' is not within the specification, repair short in the circuit not only between 'GLOW FUSIBLE LINK 80A' terminal in 'E/R SUB BOX' and 'Memory power' terminal of 'GLOW CONTROL MODULE' but also 'TCU 2 GLOW FUSE 10A' terminal in 'E/R JUNCTION BOX' and 'ON/START input' terminal of 'GLOW CONTROL MODULE', and go to "Verification of Vehicle Repair" procedure. |
| ▶ If 'Measurement 2' is higher than specification, repair short to battery between 'TCU 2 GLOW FUSE 10A' terminal in 'E/R JUNCTION BOX' and 'ON/START input' terminal of 'GLOW CONTROL MODULE', and go to "Verification of Vehicle Repair" procedure. |
IG key OFF.
Disconnect GCU connector.
Check resistance between 'Ground' terminal of GCU harness connector and chassis ground.
Specification : Continuity (Below 1.0Ω)
Is the measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair open between 'Ground' terminal of 'GLOW CONTROL MODULE' harness connector and chassis ground, and go to "Verification of Vehicle Repair" procedure. |
