Circuit Inspection
WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
|---|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | ||
|
IBU connector (with SMK) | 35 (B-CAN high) | Chassis ground | - | Fig. 1 |
| IBU connector (with SMK) | 36 (B-CAN low) | Chassis ground | - | ||
|
IBU connector (W/O SMK) | 25 (B-CAN high) | Chassis ground | - | Fig. 1 |
| IBU connector (W/O SMK) | 26 (B-CAN low) | Chassis ground | - | ||
|
IBU connector | 9, 10 (Memory power) | Chassis ground | - | B+ |
| IBU connector | 15 (ACC/ON Input) | Chassis ground | - | B+ | |
| IBU connector | 16 (ON Input) | Chassis ground | - | B+ | |
| IBU connector | 6, 11 (ON/START Input) | Chassis ground | - | B+ | |
|
IBU connector | 6, 7 (ground) | Chassis ground | - | Approx. below 1Ω |
|
IBU connector (with SMK) | 35 (B-CAN high) | Chassis ground | - | ∞ (infinity)Ω |
| IBU connector (with SMK) | 36 (B-CAN low) | Chassis ground | - | ∞ (infinity)Ω | |
| IBU connector (W/O SMK) | 25 (B-CAN high) | Chassis ground | - | ∞ (infinity)Ω | |
| IBU connector (W/O SMK) | 26 (B-CAN low) | Chassis ground | - | ∞ (infinity)Ω | |
| IBU connector (with SMK) | 35 (B-CAN high) | ICU connector | 5 (B-CAN high) | Approx. below 1Ω | |
| IBU connector (with SMK) | 36 (B-CAN low) | ICU connector | 15 (B-CAN low) | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 25 (B-CAN high) | ICU connector | 5 (B-CAN high) | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 26 (B-CAN low) | ICU connector | 15 (B-CAN low) | Approx. below 1Ω | |
|
IBU connector (with SMK) | 35 (B-CAN high) | IBU connector (with SMK) | 36 (B-CAN low) | Approx. 60Ω |
| IBU connector (W/O SMK) | 25 (B-CAN high) | IBU connector (W/O SMK) | 26 (B-CAN low) | Approx. 60Ω | |
| ICU connector | 5 (B-CAN high) | ICU connector | 15 (B-CAN low) | Approx. 60Ω | |
|
IBU (component side) (with SMK) | 35 (B-CAN high) | IBU (component side) (with SMK) | 36 (B-CAN low) | Approx. 120Ω |
| IBU (component side) (W/O SMK) | 25 (B-CAN high) | IBU (component side) (W/O SMK) | 26 (B-CAN low) | Approx. 120Ω | |
| ICU (component side) | 5 (B-CAN high) | ICU (component side) | 15 (B-CAN low) | Approx. 120Ω | |
Good
- Disconnect B-CAN communication units one by one and monitor DTC to find the cause.
- If the DTC is erased, 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 or ground in B-CAN line.
- Repair as necessary, go to "VERIFICATION OF REPAIR " procedure.