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Home >> Chrysler >> 1993 >> Concorde 3.5 F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Vehicle Communications Tests >> Test 8B - Short To 5 Volts
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Test 8B - Short To 5 Volts

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  at end of article.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Disconnect Throttle Position Sensor (TPS) connector. Using an external ohmmeter, check resistance between PCM connector terminal No. 26, CCD bus positive circuit (Violet/Brown wire), and TPS connector 5-volt supply circuit (Violet/White wire). If resistance is less than 5 ohms, repair short between Violet/Brown and Violet/White wires. Perform VERIFICATION PROCEDURE VER-1.
  2. If resistance is more than 5 ohms, check resistance between PCM connector terminal No. 46, CCD bus negative circuit (White/Black wire), and TPS connector 5-volt supply circuit (Violet/White wire).
  3. If resistance is less than 5 ohms, repair short between White/Black and Violet/White wires. Perform VERIFICATION PROCEDURE VER-1. If resistance is more than 5 ohms, replace PCM. Perform VERIFICATION PROCEDURE VER-1.
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