LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2001 >> PT Cruiser Classic >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> System Tests >> Communications >> No Response From Radio

No Response From Radio

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. See Figure. Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool communicates with other modules, go to next step. If scan tool does not communicate with other modules, proceed to NO RESPONSE FROM PCI (PCI BUS)  test.
  2. Turn ignition off. Remove fuse No. 13 (10-amp) in fuse block. If fuse is open, go to next step. If fuse is okay, go to step  5.
  3. Replace fuse No. 13. Turn ignition on. If fuse blows, go to next step. If fuse is okay, check for intermittent short to ground on Red/White wire between fuse block and radio. See POWER DISTRIBUTION article in WIRING DIAGRAMS. Repair as necessary.
  4. Turn ignition off. Disconnect Gray 7-pin radio harness connector C1. Remove fuse No. 13 from fuse block. Check resistance between radio harness connector C1 terminal No. 6 (Red/White wire) and ground. If resistance is 5 ohms or less, repair short to ground on Red/White wire. If resistance is more than 5 ohms, replace radio.
  5. Install fuse No. 13 in fuse block. Disconnect Gray 7-pin radio harness connector C1. Turn ignition on. Check voltage between radio harness connector C1 terminal No. 6 (Red/White wire) and ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open on Red/White wire.
  6. Turn ignition off. Check voltage between radio harness connector C1 terminal No. 7 (Pink wire) and ground. If battery voltage exists, go to next step. If battery voltage does not exist, repair open on Pink wire.
  7. Turn ignition off. Check resistance between radio ground (Black wire) and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair Black wire between radio and ground, located on center of instrument panel.
  8. Disconnect 2-pin radio harness connector C3. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-to-Probe Adapter (CH7062) to scope input cable. Go to next step.
  9. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Go to next step.
  10. Connect Black lead to ground. Connect Red lead to radio harness connector C3 terminal No. 1, PCI bus circuit (Violet/Yellow wire). Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace radio. See RADIO  under REMOVAL & INSTALLATION. If voltage remains at zero volts, repair open Violet/Yellow wire. Perform BODY VERIFICATION TEST .
scientia non olet · About LEMON Manuals