Diagnostic Socket (X11/4)

Fig. 72 Bosch On/Off Ratio Tester:

The diagnostic socket, which is located on the left wheel housing, is the interface connector which links the CIS-E and EZL control module with the Bosch on/off ratio tester (KDJE-P 600 lambda control tester). The Bosch on/off ratio tester displays:

a. Control Module Designation (Federal/California)
b. Fault Codes
c. Air/Fuel Ratio %
c. Idle Speed Control Values