Test 25: Heated Rear Window Led Indicator Circuit

Using Harness Adapter (210 589 01 63 00), connect Breakout Box (129 589 00 21 00) to combination control module. Turn ignition switch to RUN position. Turn heated rear window switch on. Measure voltage between terminals No. 42 and 48 at breakout box. If 7.2-9.3 volts exists, heated rear window LED indicator circuit is okay at this time. If 7.2-9.3 volts does not exist, check wiring. If wiring is okay, replace combination control module.