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P1652 J1850 Short To Ground

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By Mopar1973Man

· 11,216 views

P1652 J1850 SHORT TO GROUND

When Monitored and Set Condition:

When Monitored: While the ignition is on.
Set Condition: The ECM detects a short to ground on the J1850.

POSSIBLE CAUSES

  • ECM
  • (D25) J1850 SHORTED
  • COMMUNICATION

DIAGNOSTIC PROCEDURE

  1. Turn the ignition off. Disconnect the ECM harness connectors.
    NOTE: Check connectors - Clean/repair as necessary.
    Measure the resistance between the (D25) J1850 circuit in the ECM harness connector and battery negative. Is the resistance less than 10 Ohms?
    Yes --> Go To 2
    No --> Replace the ECM.
  2. Measure the resistance between the (D25) J1850 circuit and all other circuits in both ECM connectors. Is the resistance greater than 100k ohms?
    Yes --> Refer to the Body Diagnostic under Communications.
    No --> Repair (D25) J1850 shorted to another circuit.
    • Like 1

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