Technical Service Bulletin SB18N001A — 2014 ISUZU N-SERIES

SOME CUSTOMERS MAY COMPLAIN OF AN ILLUMINATED CHECK ENGINE MALFUNCTION INDICATOR LIGHT (MIL) ASSOCIATED WITH DIAGNOSTIC TROUBLE CODE (DTC) U0106, LOST COMMUNICATION WITH GLOW PLUG CONTROL MODULE (GPCM). THIS CONDITION MAY BE THE RESULT OF WATER INTRUSION INTO THE GPCM CONNECTOR. WATER FROM RAIN AND OTHER OUTSIDE SOURCES CAN POOL IN THE GLOW PLUG RECESSED AREA ON THE OUTSIDE OF THE CYLINDER HEAD. IF ENOUGH WATER ACCUMULATES, IT CAN SEEP INTO THE GLOW PLUG HARNESS THROUGH THE TERMINAL ENDS AND ENTER THE GPCM CONNECTOR, CAUSING THIS DTC TO SET. IF THIS DTC IS FOUND AND EVIDENCE OF WATER IS PRESENT IN THE GPCM CONNECTOR, REPLACE THE GLOW PLUG HARNESS TERMINALS AND REAR PANEL COVER AS OUTLINED IN THE SERVICE PROCEDURE IN THIS BULLETIN. THE REPLACEMENT TERMINAL ENDS ARE SEALED SO THAT WATER CANNOT GET INOT AND THROUGH THE WIRE.