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No Response From Radio

CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector or battery.
  1. Turn ignition switch to OFF position. Remove and inspect Junction Block (JB) fuse No. 8 (10-amp). Ensure fuse is correct for circuit. If fuse is okay, go to next step. If fuse is blown, go to step  3 .
  2. Disconnect radio 2-pin connector C3. Turn ignition switch to ON position. Using DVOM, measure voltage between ground and Violet/Brown wire terminal of radio connector C3. Measure between ground and White/Black wire terminal of radio connector C3. If both readings are 1.8-2.8 volts, go to next step. If either reading is not 1.8-2.8 volts, repair open in Violet/Brown and/or White/Black wire as necessary. Perform BODY VERIFICATION TEST  .
  3. Turn ignition switch to OFF position. Disconnect Gray radio 7-pin connector C1. Turn ignition switch to ON position. Measure voltage between ground and terminal No. 7 (Pink wire). If reading is 10 volts or less, repair open or short to ground in Pink wire between radio connector C3 and fuse No. 12 (15-amp) of JB. If reading is more than 10 volts, go to next step. Perform BODY VERIFICATION TEST  .
  4. Turn ignition switch to OFF position. Replace any previously removed or blown fuses. Turn ignition switch to ON position. Measure voltage between ground and Gray radio connector C1 terminal No. 6 (Red/White wire). If reading is 10 volts or less, repair open or short to ground in Red/White wire between Gray radio connector C1 and fuse No. 8 (10-amp) of JB. Perform BODY VERIFICATION TEST  . If reading is more than 10 volts, go to next step.
  5. Turn ignition switch to OFF position. Inspect ground strap and antenna for correct installation. Repair as needed. Disconnect radio ground strap. Measure resistance between ground and ground strap connector. If reading is 5 ohms or more, replace radio ground strap. If reading is less 5 ohms, ground strap and antenna are okay, replace radio. Perform BODY VERIFICATION TEST  .
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