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 | 11 (ON/START Input) | Chassis ground | - | B+ | |
|
IBU connector | 6, 7 (ground) | ICU connector | - | Approx. below 1Ω |
|
IBU connector (with SMK) | 35 (B-CAN high) | Chassis ground | - | Approx. below 1Ω |
| IBU connector (with SMK) | 36 (B-CAN low) | Chassis ground | - | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 25 (B-CAN high) | Chassis ground | - | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 26 (B-CAN low) | Chassis ground | - | Approx. 60Ω | |
| IBU connector (with SMK) | 35 (B-CAN high) | Chassis ground | 5 (B-CAN high) | Approx. below 1Ω | |
| IBU connector (with SMK) | 36 (B-CAN low) | Chassis ground | 15 (B-CAN low) | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 25 (B-CAN high) | Chassis ground | 5 (B-CAN high) | Approx. below 1Ω | |
| IBU connector (W/O SMK) | 26 (B-CAN low) | Chassis ground | 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 | |
|
IBU (component side) (with SMK) | 35 (B-CAN high) | IBU connector (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
- Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
- Repair or replace as necessary and go to "VERIFICATION OF REPAIR " procedure.
No Good
- If the measured value is battery voltage, check short to battery in CAN line. Repair or replace as necessary. And then, go to "VERIFICATION OF REPAIR " procedure. In case that communication is in sleep mode, 12V will be measured. Therefore, check that communication is in wake up status.
- If 0V is detected, check short to ground, short between CAN high and low each other or open in CAN high or CAN low harness. Repair or replace as necessary and then, go to "VERIFICATION OF REPAIR " procedure.