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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> LAN System (Can) (Exc Hybrid) >> DTC/Circuit Diagnosis >> IPDM-E Branch Line Circuit >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK CONNECTOR

    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
      • IPDM E/R
      • Harness connector E64 and fuse block (J/B) side connector

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO 

    Repair the terminal and connector.

  2. CHECK HARNESS FOR OPEN CIRCUIT

    1. Disconnect the connector of IPDM E/R.
    2. Check the resistance between the IPDME/R harness connector terminals.
      IPDM E/R harness connector Resistance (Ω)
      Connector No. Terminal No.
      E121 29 28 Approx. 54 - 66

    Is the measurement value within the specification?

    YES 

    GO TO STEP 3  .

    NO 

    GO TO STEP 4  .

  3. CHECK POWER SUPPLY AND GROUND CIRCUIT

    Check the power supply and the ground circuit of the IPDM E/R. Refer to DIAGNOSIS PROCEDURE .

    Is the inspection result normal?

    YES (Present error) 

    Replace the IPDM E/R. Refer to REMOVAL AND INSTALLATION .

    YES (Past error) 

    Error was detected in the IPDME/R branch line.

    NO 

    Repair the power supply and the ground circuit.

  4. CHECK HARNESS FOR OPEN CIRCUIT

    1. Disconnect the harness connector E64.
    2. Check the continuity between the IPDM E/R harness connector and harness connector.
      IPDM E/R harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      E121 29 E64 6E Existed
      28 2E Existed

    Is the measurement value within the specification?

    YES 

    Replace the fuse block (J/B).

    NO 

    Repair the harness between the IPDM E/R harness connector E121 and harness connector E64.