LEMON Manuals: Even more car manuals for everyone
Home >> Kia >> 2020 >> Optima LX >> Repair and Diagnosis >> External Pages >> Different car >> Section 254 (Dual Clutch Transmission Diagnosis (2 Of 2) - 1.6L) >> DTC U1117-88: High Speed CAN 2 Communication (EMS - DCT) >> Wiring Inspection >> CAN Communication Line Inspection

CAN Communication Line Inspection

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Item Normal Value Prerequisite Condition Probe (+) Probe (-)
CAN Communication Line (Open): Resistance Approx. below 1Ω
  1. Ignition: OFF
  2. Shift lever, ECM connector: Disconnected
Shift lever CCP-CAN High terminal ECM CCP-CAN High terminal
Shift lever CCP-CAN Low terminal ECM CCP-CAN Low terminal
CAN Communication Line (Short): Resistance ∞ (infinite)Ω
  1. Ignition: OFF
  2. Shift lever connector: Disconnected
Shift lever CCP-CAN High terminal Chassis ground
Shift lever CCP-CAN Low terminal Chassis ground
CAN Communication Line (Short): Voltage Approx. 0V
  1. Shift lever connector: Disconnected
  2. Ignition: ON
Shift lever CCP-CAN High terminal Chassis ground
Shift lever CCP-CAN Low terminal Chassis ground
  1. Is the result within specifications?

    YES 

    • This can be an intermittent fault caused by poor contact in the sensor's and/or control module's connector. Or, control module's memory was not cleared after repair. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage.
    • Replace the ECM with an usable one and check for proper operation. If it works properly, put the component in place. Then, go to "VERIFICATION OF VEHICLE REPAIR ".

    NO