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4.3 Antenna Systems (AS)    >   23 Electrical Test Program - Test

Test scope Test connection Test condition Nominal value Possible cause/Remedy 1.0 Electrolytic capacitor (C3) Function         Ignition: OFF Radio (A2): ON Tune radio to weak station in AM band. Engine: at idle No change in the reception quality. Electrolytic capacitor (C3) in right C-pillar. 2.0 High frequency wire to radio (A2) Short circuit (shielding/signal wire) Radio (A2): OFF Disconnect connector from radio (A2) and FM/AM rear window antenna amplifier (A2/18) (Figure 1). < 10 Wiring. 3.0 Radio (A2) Control voltage WO A2/18 b Disconnect connector from (A2/18) (Figure 1). Radio (A2): ON 11 - 14 V Wiring, D.M., Information/Communication, Vol. 1, Radio (RD) - 3.1 >23 4.0 FM/AM rear window antenna amplifier (A2/18) A2/18 A2 Connect ammeter between A2/18 and automatic antenna control wire from radio (A2) (Figure 1). Radio (A2): ON 52 - 72 mA A2/18, 5.0 , Values are OK: however, there is a poor reception quality: Replace A2/18 and retest using Function Test 11 , If reception problem continues, replace rear window antenna. 5.0 Ground connection A2/18 A2/18 Radio (A2): OFF Note: Do not loosen mount nuts for A2/18, since mount also functions as ground for A2/18. < 1 Connection (mount) resistance at ground point.