20-ST-001H-2
Service Bulletin Details
Public Details for: 20-ST-001H-2
This bulletin provides information regarding replacement of the column-mounted motor driven power steering (mdps) system as separate components.
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GROUP STEERING Technical Service Bulletin SUBJECT: DATE SEPTEMBER, 2020 NUMBER 20-ST-001H-2 MODEL(S) See Below COLUMN-MOUNTED MDPS REPAIR INFORMATION THIS TSB SUPERSEDES 20-ST-001H-1 TO REVISE THE CAUSAL PART NUMBER IN THE WARRANTY INFORMATION TABLE AND UPDATE THE BEARING NOISE EXAMPLE VIDEO. Description: This bulletin provides information regarding replacement of the column-mounted Motor Driven Power Steering (MDPS) system as separate components. Applicable Vehicles: Accent (RB/HC), Azera (HG), Elantra (MD/UD/AD), Elantra Coupe (JK), Elantra GT (GD/PD), Ioniq Hybrid/Plug-In/Electric Vehicle (AE HEV/AE PHEV/AE EV), Kona (OS), Kona EV (OS EV), Palisade (LX2), Santa Fe (TMA), Santa Fe/XL (NC), Santa Fe Sport (AN), Sonata (YF/LF/DN8a), Sonata Hybrid/Plug-In (YF HEV/ LF HEV/LF PHEV/DN8 HEV), Tucson (LM/TL), Tucson Fuel Cell (LM FCEV), Veloster (FS/JS) NOTICE Refer to the applicable model shop manual for the detailed diagnostic and repair service procedures. Circulate To: General Manager, Service Manager, Parts Manager, Warranty Manager, Service Advisors, Technicians, Body Shop Manager, Fleet Repair SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION Parts Information: Partial Parts of C-MDPS System 7 8 1. 2. 3. 4. 5. 6. Column & Shaft Assembly (C-MDPS full assembly) Column & Housing Assembly C-MDPS Motor C-MDPS ECU Universal Joint Assembly Electric Power Pack (C-MDPS Motor and C-MDPS ECU assembly. Applicable to Palisade (L X2) and Santa Fe (TMa). 7. Worm Shaft Assembly 8. Steering Universal Joint Pinch Bolts (Upper and Lower) NOTICE Refer to the applicable parts catalog for specific application part numbers. Grease for Mando Systems Remarks For Mando C-MDPS vehicles below: Santa Fe Sport (AN) Accent (RB/HC) Tucson (LM/TL) Tucson Fuel Cell (LM FCEV) The proper amount of grease is equivalent to a 50mm bead. Part Number: YSBB0-91105-FFF TSB #: 20-ST-001H-2 *Each tube of grease can be used on approximately 15 vehicles. Page 2 of 13 SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION SUBJECT: Special Service Tools Information: Tool Name Image SST Number Chassis Ears J-39570 NOTICE Chassis Ears are available for order through Bosch: 1-866-539-4248 TSB #: 20-ST-001H-2 Page 3 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION Warranty Information: MODEL OP CODE OPERATION OP TIME CAUSAL NATURE CAUSE PART CODE CODE Accent (RB/HC) Azera (HG) Elantra (MD/UD/AD) Elantra Coupe (JK) Elantra GT (GD/PD) Ioniq (AE HEV/PHEV/EV) Kona (OS/OS EV) Santa Fe / XL (NC) C-MDPS 56330R00 Santa Fe Sport (AN) (EPS) Motor Sonata (YF/LF) Sonata Hybrid (YF HEV/LF HEV/LF PHEV) Tucson (LM/TL) Tucson Fuel Cell (LM FCEV) Veloster (FS/JS) Please see WEB LTS for current LTS time 56330* I11 ZZ3 Accent (RB/HC) Elantra (MD/UD/AD) Elantra Coupe (JK) Elantra GT (GD/PD) Ioniq (AE HEV/PHEV/EV) Kona (OS/OS EV) Santa Fe / XL (NC) Santa Fe Sport (AN) 56345R00 Sonata (YF/LF) Sonata Hybrid (YF HEV/LF HEV/LF PHEV) Tucson (TL) Tucson Fuel Cell (LM FCEV) Veloster (FS/JS) C-MDPSECU Assy Please see WEB LTS for current LTS time 56340* I11 ZZ3 C-MDPSECU Assy Please see WEB LTS for current LTS time 56345* I11 ZZ3 I11 ZZ3 Azera (HG) Tucson (LM) 56345R00 Palisade (LX2) Please see Electronic Santa Fe (TMa) WEB LTS for 56370R00 Power Pack 56370* Sonata (DN8a) current LTS Assy Sonata Hybrid (DN8 HEV) time NOTE: Dealers may claim $0.10 on sublet for reimbursement of grease. * Refer to applicable parts catalog for full causal part numbers. TSB #: 20-ST-001H-2 Page 4 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION MODEL OP CODE OPERATION OP TIME CAUSAL NATURE CAUSE PART CODE CODE Accent (RB/HC) Steering Azera (HG) Column Shaft 56300R0S 56310* Elantra (MD/UD/AD) Assembly Elantra Coupe (JK) (C-MDPS) Elantra GT (GD/PD) Steering Ioniq (AE HEV/PHEV/EV) Column & 56390R00 56390* Kona (OS/OS EV) Housing Assy Palisade (LX2) (C-MDPS) Please see Santa Fe (TMa) WEB LTS for Santa Fe / XL (NC) current LTS Santa Fe Sport (AN) time Sonata (YF/LF/DN8a) Joint And/Or Sonata Hybrid (YF Coupling HEV/LF HEV/LF 56400R00 56400* AssyPHEV/DN8 HEV) Universal Tucson (LM/TL) Tucson Fuel Cell (LM FCEV) Veloster (FS/JS) Elantra (AD/ADa) Please see applicable Elantra GT (PD) Please see “C-MDPS Worm Shaft Ioniq (AE HEV/PHEV/EV) applicable “CBearing Noise” TSB Kona (OS/OS EV) MDPS Worm MDPS Worm 20-ST-002H-2 or Palisade (LX2) Shaft Bearing Shaft 20-ST-003H-1 for Op Santa Fe / XL (NC) Noise” TSB Assembly Time and applicable Sonata (LF/DN8a) 20-ST-002H-2 Replacement Worm Shaft Assy part to Sonata Hybrid (LF HEV/LF Or be used for the causal PHEV/DN8 HEV) 20-ST-003H-1 part number Veloster (FS/JS) NOTE: Dealers may claim $0.10 on sublet for reimbursement of grease. * Refer to applicable parts catalog for full causal part numbers. TSB #: 20-ST-001H-2 I11 ZZ3 Q57 ZZ7 Page 5 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION Service Procedure: NOTICE C-MDPS Repair Flowchart is meant to be used as reference guide only. See C-MDPS DTC table for more details. It is recommended to replace the column & housing assembly, o In cases of no DTC(s) with symptoms of binding/sticking steering feel. o Noise diagnosed to be coming from column & housing assembly. However, if the noise is diagnosed to be coming from the worm shaft bearing, refer to the applicable “C-MDPS Worm Shaft Bearing Noise” TSB 20-ST-002H-2 or 20-ST-003H-1 If the pinch bolts on either ends of the steering universal joint assembly are removed, the bolts cannot be reused during reassembly. Refer to the shop manual for other common C-MDPS noise repairs. If a C-MDPS component is replaced, but the concern is not resolved, please contact the Hyundai Technical Assistance Hotline at 1-800-325-6604 for further assistance. Note that some DTCs may be found in systems other than EPS (electric power steering) in GDS. They may be found in the Brake/ABS/ESC system. Check all systems for DTCs. Always refer to the applicable model shop manual for detailed information regarding DTC diagnosis and component replacement procedures. TSB #: 20-ST-001H-2 Page 6 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION C-MDPS Repair Flowchart Vehicle in dealer for C-MDPSrelated concern. Noise – See C-MDPS Noise Repair Information in this TSB. Warning Lamp Illuminated – DTC(s) present / CAN Line Error No DTC(s), Sticking / Binding – Replace column & housing assy. Scraping/growling noise when turning steering wheel https://youtu.be/22PI3hAEfnk – Refer to the appropriate “C-MDPS Worm Shaft Bearing Noise” TSB 20-ST-002H-2 or 20-ST-003H-1 1. Check C-MDPS connectors and wiring. 2. Erase DTC(s) and re-check. 3. If DTC(s) still present, follow these recommended repairs. ECU-Related C1112 C1604 C1623 C1687 C1688 C1704 C1705 C2412 C2413 Replace the C-MDPS ECU (or C-MDPS Power Pack Assy). Motor-Related C2400 C2401 Replace the C-MDPS motor (or C-MDPS Power Pack Assy). Column & HousingRelated C1259 C1290 Replace the column & housing assy. Connectors / Wiring Related C1260, C1261, C1611, C1612, C1616, C1622, C1628, C1646, C1656, C1692, C1693, C1696, C1697 Check DTC(s) and Wiring at HECU / C-MDPS / EMS • Check connectors for poor connection. • Check for connector corrosion. • Check for connector damage or deformation. • Check the DTC Diagnostic Guide on HyundaiTechInfo.com NOTICE For cases with multiple DTCs: o If the DTCs relate to more than a single C-MDPS component, it is recommended to replace the full C-MDPS assembly (56310). o If the DTCs relate only to a single C-MDPS component, it is recommended to replace only the suspect component. DTCs shown are based on the 5-digit DTC system. For vehicles showing 7-digit DTCs, refer to the DTC that matches only the first 5-digits. TSB #: 20-ST-001H-2 Page 7 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION C-MDPS DTC Table DTC Description First Inspection Method C1102 Battery voltage problem C1603 MDPS thermal protection C1611 C1616 CAN time out EMS CAN BUS OFF C1622 Vehicle speed signal error Check battery voltage condition. Investigate driving conditions DTC is set. This DTC protects motor from overheating. 1. Check GDS condition. 2. Check wiring and connector condition. 3. Check ECU CAN line. 4. Check C-MDPS ground. Check SPAS and associated wiring. Check TCU and associated wiring. Check instrument cluster and associated wiring. Check VSM and associated wiring. Reset steering angle sensor calibration and erase DTC(s). Check wiring (torque angle sensor TAS, see below for details) and connector condition. Reset steering angle sensor calibration. C1696, C1697 C1612, C1646 C1628, C1656 C1692, C1693 C1259 C1260 C1261 C1290 SPAS signal error TCU signal error Instrument cluster signal error VSM signal error Steering angle sensor signal error Steering angle sensor signal error Zero-setting error Torque sensor signal error First erase DTC, then check wiring (torque angle sensor (TAS), see below for details) and connector condition. Check wiring and connector condition between torque sensor and ECU. C1112 Torque sensor voltage error C1704 C1705 C1604 C2413 C2400 C2401 ECU fail-safe relay fault ECU hardware error ECU over/discharge error ECU hardware error Motor signal error Motor circuit error First erase DTC, then check wiring and connector at ECU. C2412 Motor voltage supply error First erase DTC, check wiring and connector between ECU and motor. C1623 C1687 CAN time out SAS CAN time out VSM C1688 VSM signal error 1. Check C-MDPS power connector and fuse. 2. Check C-MDPS ground line. 3. Check C-MDPS ECU / VSM CAN line. 4. Communication status with GDS. 5. Check for C1259 -> if present with these DTCs, replace column and housing assembly. TSB #: 20-ST-001H-2 Repair Recommendations Recharge battery voltage. No replacement necessary. Check EMS CAN line. Check the chassis CAN line. Check the EMS (Engine ECU). Repair as necessary. Erase DTC(s). Full C-MDPS assy is not to be replaced. If DTC returns, replace column & housing assembly. If a problem is found with TAS wiring, replace full C-MDPS assy. If DTC returns, inspect wiring and connector condition. If DTC returns, replace column & ho using assembly. If a problem is found with TAS wiring, replace full C-MDPS assy If DTC returns, replace C-MDPS ECU (or Power Pack Assy). If DTC returns, replace MDPS motor (or Power Pack Assy). First replace C-MDPS ECU (or Power Pack Assy). If DTC returns, replace C-MDPS motor (if applicable). If DTC returns, replace MDPS ECU (or Power Pack Assy). If DTC returns and MDPS is inoperable, replace C-MDPS ECU (or Power Pack Assy). If DTC returns and MDPS operation is normal, continue investigation into wiring issues. For TMa, if C1688 occurs along wit h C1700, replace Power Pack Assy. Page 8 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION Torque Angle Sensor (TAS) Wiring Inspection In the presence of DTC C1259 (steering angle sensor signal error) and/or C1290 (torque sensor signal error), inspect the condition of the TAS wiring. Remove the grommet (A) and check the wiring on both TAS side (B) and ECU side (C). Check for damage, push-back, or improper connection. If any issues are found in this harness, replace the full C-MDPS (part number starting with 56310) assembly. TSB #: 20-ST-001H-2 Page 9 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION Steering Noise Repair Information DAB wiring Clock spring Vehicle in dealer for C-MDPS noiserelated concern. 1. Check steering wheel area • Check correct condition of driver air bag wiring (DAB, clock spring, multifunction switch). Repair as appropriate. 2. Check C-MDPS mounting area • Check cowl mounting bolts (check below C-MDPS mounting bolts) • Check cowl cross member mounting bolts. Tighten bolts to the specified torque in the shop manual. 3. Check steering intermediate shaft U-joint bolts. • Remove and check U-joint assembly for noise. Replace shaft or tighten bolts to the specified torque in the shop manual. NOTICE: If the pinch bolts on either ends of the steering universal joint assembly are removed, the bolts cannot be reused during reassembly. 4. • • Check steering gear box Check mounting bolts Check steering gear assembly for noise. Tighten bolts to the specified torque in the shop manual; replace parts as necessary. Multifunction switch C-MDPS mounting Cowl mounting Steering shaft U-joints Steering gear box Tie-rod end ball joint 5. Check tie-rod end ball joint free play. Replace parts as necessary. 6. Check C-MDPS assembly. • Locate source of noise using chassis ears. • Refer to C-MDPS Assembly Noise Information. Replace part with noise as necessary. TSB #: 20-ST-001H-2 Page 10 of 13 SUBJECT: SUBJECT: C-MDPS COMPONENT REPLACEMENT INFORMATION C-MDPS Assembly Noise Information NOTICE Use Chassis Ears (SST #J-39570) attached to the areas shown below to isolate source of noise within C-MDPS assembly. One way to verify that the source of noise is the column & housing assembly is to remove the part, and turn the assembly with the C-MDPS motor removed, as shown below. Method #1 Use intermediate shaft to turn steering column. Method #2 Use pliers with a shop towel to turn steering column. TSB #: 20-ST-001H-2 Page 11 of 13 SUBJECT: SUBJECT: 1. C-MDPS COMPONENT REPLACEMENT INFORMATION Small bearing noise – Growling/grinding/bearing noise https://youtu.be/22PI3hAEfnk Check for this noise at the worm gear area, as shown. If the noise source is confirmed from this location: Replace the worm gear assembly. Refer to the appropriate “C-MDPS Worm Shaft Bearing Noise” TSB 20-ST-002H-2 or 20-ST-003H-1. 2. Ticking noise – Check for this noise on the column & housing as shown. If the noise source is confirmed from this location: Replace the column & housing assembly. TSB #: 20-ST-001H-2 Page 12 of 13 SUBJECT: SUBJECT: 3. C-MDPS COMPONENT REPLACEMENT INFORMATION Motor noise – Check the motor for noise. If the noise source is confirmed from this location: Replace the C-MDPS motor or C-MDPS Electric Power Pack (as appropriate). TSB #: 20-ST-001H-2 Page 13 of 13 SUBJECT: