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.
- (D25) J1850 SHORTED
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.
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.