1)After replacing controller, always check that the system operates properly.
2)If the failure persists after replacing the controller, do not replace the controller.
1.Inspection by DTC Code
| Symptom | Probable Cause | Remedy |
| 1. Single DTC code appearance | Loose connector relevant to a certain DTC code | 1) Check connection status and reconnect the connector. |
| Tolerance compensation not completed | 1) DTC code appearance (B103000) 2) Perform tolerance compensation. | |
| Disconnected wiring | 1) Inspect for conductivity of relevant area of DTC and wiring. - DTC code generated (B16B700/B16B800/B16B900/B16BA00/C161600/B162C00) | |
| Faulty wiring connector | 1) Check for bent or damaged wiring connector pin. 2) DTC code generated (B16B700/B16B800/B16B900/B16BA00 | |
| Faulty controller connector | 1) Check for bent or damaged controller connector pin. 2) DTC code generated (B16B700/B16B800/B16B900/B16BA00) | |
| Faulty controller single unit or camera | 1) Check basic operation and DTC on Diagnostic tool. 2) DTC code generated (B16B700/B16B800/B16B900/B16BA00) | |
| 2. Multiple DTC codes appearance | Loose SVM main connector | 1) Check connection status and reconnect the connector. |
| Disconnected wiring | 1) Camera power - In case of 6V or below, inspect relevant wiring. 2) ACC/IGN power - In case of 7.5V or below, inspect relevant wiring. 3) Parking/view button - In case of 1.75V or higher with the switch ON, inspect relevant wiring. | |
| Faulty wiring connector | 1) Check for bent wiring connector pin or interference in neighboring parts. 2) DTC code generated (B16B700/B16B800/B16B900/B16BA00) | |
| Faulty controller connector | 1) Check for bent controller connector or interference in neighboring parts. 2) DTC code generated (B16B700/B16B800/B16B900/B16BA00) | |
| Faulty controller single unit | 1) If failure recurs after the items above are confirmed normal, replace SVM. |
2.Inspection for Defect in SVM Performance (Image Output)
| Symptom | Probable Cause | Remedy |
| 1. No image output : Black screen, Blue screen, Green screen | Loose controller or SVM main connector | 1) Check connection status and reconnect the connector. |
| Disconnected controller or SVM wiring | 1) Inspect for conductivity of ACC / IGN / V-OUT / M-CAN terminal wiring | |
| Faulty IPM (SJB) | 1) Check power of ACC / IGN terminals : In case of 7.5V or below, inspect IPM (SJB) | |
| Faulty controller or SVM | 1) If failure recurs after the items above are confirmed normal, replace controller or SVM camera. | |
| 2. Abnormal image output :Noise on screen / lines / cracked display / unable to change display | Loose main connector | 1) Check connection status and reconnect the connector. |
| Disconnected or short-circuited wiring | 1) Inspect the wiring relevant to DTC appearance. | |
| Faulty tolerance compensation | 1) If the SVM image display is cracked even though the camera display is normal, execute tolerance compensation again. | |
| Faulty camera | 1) If both camera display and SVM image display are cracked, inspect the camera. | |
| Faulty IPM (SJB) | 1) In case of DTC code (C161600) appearance, inspect IPM (SJB). | |
| Faulty console switch | 1) Inspect parking/view button. - In case of 1.75V or higher with the switch ON, replace the switch. | |
| Faulty controller or SVM camera | 1) If failure recurs after the items above are confirmed normal, replace controller or SVM camera. |
Description and Operation
Repair proceduresHyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Heater & A/C Control Unit (DATC)
- Terminal Function
Connector Pin Function
Pin NoConnector A
1Battery (+)
2-
3-
4LIN BUS (Climate control)
5-
6-
7-
8-
9IGN2
10ISG B+
11IGN1
12-
13Incar sensor (+)
14-
15Sensor Ground
16Ground
- Self Diagnosis
1.Self-diagnosis process.
• When op ...
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Fuel Pump
- Inspection
[Fuel Pump]
1.Turn ignition switch OFF and disconnect the negative (-)battery cable.
2.Remove the fuel pump assembly.
3.Check motor operation by fuel pump connector (A) connecting power (No.2) and ground (No.4)
Pin NoDiscription
1Fuel sender signal
2-
3Fuel sender ground
...