Circuit Inspection
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
|---|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | ||
|
HUD connector | 6, 12 (power) | Chassis ground | - | B+ |
|
HUD connector | 1, 7 (ground) | Chassis ground | - | Approx. below 1Ω |
|
HUD connector | 2 (E-CAN high) | Chassis ground | - | Figure below |
| HUD connector | 3 (E-CAN low) | Chassis ground | - | ||
|
HUD connector | 2 (E-CAN high) | HUD connector | 3 (E-CAN low) | Approx. 60Ω |
| FATC (component side) (manual) | 33 (E-CAN high) | FATC (component side) (manual) | 34 (E-CAN low) | Approx. 120Ω | |
| FATC (component side) (auto) | 35 (E-CAN high) | FATC (component side) | 34 (E-CAN low) | Approx. 120Ω | |
| ICU (component side) | 31 (E-CAN high) | ICU (component side) | 32 (E-CAN low) | Approx. 120Ω | |
Good
- Disconnect E-CAN communication units one by one and monitor DTC to find the cause.
- If the DTC erase, substitute with a known-good unit and check for proper operation. If the problem is corrected, replace the unit and go to "VERIFICATION OF REPAIR " procedure.
No Good
- Check for open, short to battery and short to ground in E-CAN line.
- Repair as necessary and go to "VERIFICATION OF REPAIR " procedure.