Nissan Sentra manuals

Nissan Sentra Service Manual: C1607, C1608 EPS Control unit

DTC Logic

DTC DETECTION LOGIC

Dtc

Display item

Malfunction detected condition

Possible cause

C1607 EEPROM When the memory (EEPROM) system malfunction is detected in EPS control unit. Eps control unit
C1608 CONTROL UNIT When the internal malfunction is detected in EPS control unit.

Dtc confirmation procedure

1.Preconditioning

If dtc confirmation procedure has been previously conducted, always turn ignition switch off and wait at least 10 seconds before conducting the next test.

>> Go to 2.

2.DTC REPRODUCTION PROCEDURE

With consult


  1. Turn the ignition switch OFF to ON.

  2. Perform eps self-diagnosis.

Is dtc c1607 or c1608 detected? Yes >> proceed to diagnosis procedure. Refer to stc-28, "diagnosis procedure".

No >> inspection end.

Diagnosis Procedure

1.CHECK TERMINALS AND HARNESS CONNECTORS

Check eps control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace the malfunctioning parts.

Is the inspection result normal? Yes >> go to 2.

No >> repair or replace the malfunctioning parts.

2.Perform self-diagnosis

With consult


  1. Erase self-diagnostic results for EPS.

  2. Turn the ignition switch OFF, and then wait 10 seconds and more.

  3. Perform self-diagnosis for EPS.

Is DTC C1607 or C1608 detected? YES >> Replace EPS control unit. Refer to STC-39, "Removal and Installation".

NO >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

C1606 EPS Motor
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C1609 Vehicle speed signal
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