LS V8-3.9L VIN A (2003)
Test J6-J7
Normal Operation
The DDM communicates with the diagnostic tool through the SCP communications network circuits 4-E013 (GY/OG) and 5-EG13 (GY/OG). If one
of the bus wires becomes shorted to ground or voltage, or if some but not all termination resistors are lost communications can continue. Check
circuits 4-E013 (GY/OG) and 5-E013 (GY/OG) between the DDM C501a and the DLC C251. Total resistance values must not be more than 5 ohms.
If the resistance is more than 5 ohms, there is either an open in circuit 4-EG13 (GY/OG) or 5-E613 (GY/OG), damage to the DLC C2511, damage to
the DDM C155a, or a problem in the interior auxiliary junction box (AJB) C283c, C283d or joint connector No.4 C223.
Possible Causes
-
circuits 4-EG13 (GY/OG) and 5-EG13 (GY/OG) shorted to ground or open
-
C501a
-
interior AJB C283c, C283d
-
joint connector No.4 C223
-
DLC C251
-
DDM
Test K
PINPOINT TEST K: THE REAR ELECTRONIC MODULE (REM) DOES NOT RESPOND TO THE DIAGNOSTIC TOOL