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 | ||
|
HECU connector (W/O EPB) | 1, 25, 32 (ON/START Input) | Chassis ground | - | B+ |
| HECU connector (with EPB) | 1, 30, 37 (ON/START Input) | Chassis ground | - | B+ | |
|
HECU connector (W/O EPB) | 13, 38 (ground) | Chassis ground | - | Approx. below 1Ω |
| HECU connector (with EPB) | 14, 46 (ground) | Chassis ground | - | Approx. below 1Ω | |
|
HECU connector (W/O EPB) | 4 (C-CAN high) | Chassis ground | - | Fig.1 |
| HECU connector (W/O EPB) | 5 (C-CAN low) | Chassis ground | - | ||
| HECU connector (with EPB) | 19 (C-CAN high) | Chassis ground | - | Fig.1 | |
| HECU connector (with EPB) | 20 (C-CAN low) | Chassis ground | - | ||
Good
- Go to "C-CAN Communication Line Inspection" procedure below.
No Good
- Repair open or short in circuit and then go to "VERIFICATION OF REPAIR " procedure.
| C-CAN Communication Line Inspection | |||||
|---|---|---|---|---|---|
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
| Connector | Terminal | Connector | Terminal | ||
|
BCW radar (RH) connector | 5 (C-CAN high) | BCW radar (LH) connector | 1 (C-CAN low) | Approx. 60Ω |
| BCW radar (RH) connector | 5 (C-CAN high) | HECU connector (W/O EPB) | 4 (C-CAN high) | Approx. below 1Ω | |
| BCW radar (RH) connector | 1 (C-CAN low) | HECU connector (W/O EPB) | 5 (C-CAN low) | Approx. below 1Ω | |
| BCW radar (RH) connector | 5 (C-CAN high) | HECU connector (with EPB) | 19 (C-CAN high) | Approx. below 1Ω | |
| BCW radar (RH) connector | 1 (C-CAN low) | HECU connector (with EPB) | 20 (C-CAN low) | Approx. below 1Ω | |
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 then go to "VERIFICATION OF REPAIR " procedure.
No Good
- Carefully re-do this troubleshooting guide steps.
- Repair open or short in circuit and then go to "VERIFICATION OF REPAIR " procedure.
- If no problems were found with the circuits or connectors, replace the HECU and go to "VERIFICATION OF REPAIR " procedure.