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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (3.0L Diesel - DTCS P0627-00 To P1692-00) >> DTC Troubleshooting >> P0683-00-Glow Plug Control Module 1 To Pcm Communication Circuit >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
GENERATOR
LIN BUS CIRCUIT SHORTED TO GROUND
LIN BUS CIRCUIT OPEN/HIGH RESISTANCE
LIN BUS CIRCUIT SHORTED TO VOLTAGE
ASD SUPPLY CIRCUIT OPEN/HIGH RESISTANCE
ASD SUPPLY CIRCUIT SHORT TO GROUND
FUSED B+ CIRCUIT OPEN/HIGH RESISTANCE
FUSED B+ CIRCUIT SHORT TO GROUND
GLOW PLUG MODULE GROUND CIRCUIT OPEN/HIGH RESISTANCE
GLOW PLUG MODULE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .