J-4 Check For Open I Circuit
^ NOTE: Voltage regulator must be connected to wiring harness for this test. turn ignition switch to RUN.
^ Measure voltage at wiring harness I terminal, Circuit 904 (LG/R).
^ Is voltage greater than 1.0 V?
YES -- GO to J5. J-5 Check For Voltage Drop In the B+ Circuit
NO -- Service open or high resistance in circuit 904 (LG/R).