LEMON Manuals: Even more car manuals for everyone
Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 38 (Engine Control System Diagnosis - 1.6L (3 Of 3) (Except HEV)) >> DTC U0001: High Speed CAN Communication Bus Off >> Wiring Inspection >> CAN Communication Circuit Inspection

CAN Communication Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check CAN BUS Short to Ground 

  1. IG KEY "OFF".
  2. Disconnect CAN communication modules.
  3. Measure the resistance between CAN-HIGH terminal of DLC harness connector and chassis ground.
  4. Measure the resistance between CAN-LOW terminal of DLC harness connector and chassis ground.

    Specification:  Infinite

  5. Is the measured resistance within specification?

    YES 

    • Go to "Check CAN BUS Short to battery" as follows.

    NO 

■ Check CAN BUS Short to battery 

  1. IG KEY "OFF".
  2. Disconnect CAN communication modules.
  3. IG KEY "ON".
  4. Measure the voltage between CAN-HIGH terminal of DLC harness connector and chassis ground.
  5. Measure the voltage between CAN-LOW terminal of DLC harness connector and chassis ground.

    Specification:  below 0 V

  6. Is the measured voltage within specification?

    YES 

    • Go to "Check open in CAN BUS line" as follows.

    NO 

■ Check open in CAN BUS line 

  1. IG KEY "OFF".
  2. Disconnect CAN communication modules.
  3. Check resistance between CAN-HIGH terminal of Data Link Connector and CAN-HIGH terminal of each module. (Measurement "A")
  4. Check resistance between CAN-LOW terminal of Data Link Connector and CAN-LOW terminal of each module. (Measurement "B")

    Specification:  Below 1.0 Ω

  5. Is the resistance within specification?

    YES 

    NO 

scientia non olet · About LEMON Manuals