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Test G: No Communication With Driver Seat Module

NOTE: Connector C362 is a 2-terminal connector. Identify by wire color. See WIRING DIAGRAMS  .
  1. Test Power Supply To Driver Seat Module  - Disconnect driver seat module harness connector C362. Measure voltage at terminal No. 1 (Red wire) at driver seat module harness connector C362. If battery voltage does not exist, go to next step. If battery voltage exists, go to step 7).
  2. Test Fuse No. 19  - Remove fuse No. 19 (30-amp) from power distribution box in engine compartment. If fuse is blown, go to next step. If fuse is not blown, repair open in Red wire.
  3. Test Red Wire For Short  - Ensure fuse No. 19 is still removed. Measure resistance between ground and terminal No. 1 (Red wire) at driver seat module harness connector C362. If resistance 10,000 ohms or less, go to next step. If resistance is greater than 10,000 ohms, go to step 5).
  4. Test Red Wire For Short  - Disconnect lumbar switch harness connector C345. Measure resistance between ground and terminal No. 3 (Red wire) at lumbar switch harness connector C345. If resistance is greater than 10,000 ohms, replace lumbar switch. If resistance 10,000 ohms or less, repair short to ground in Red wire.
  5. Test Red/White Wire For Short  - Disconnect lumbar switch harness connector C345. Measure resistance between ground and terminal No. 5 (Red/White wire) at lumbar switch harness connector C345. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair short in Red/White wire.
  6. Test Red/Black Wire For Short  - Measure resistance between ground and terminal No. 1 (Red/Black wire) at lumbar switch harness connector C345. If resistance is greater than 10,000 ohms, replace driver seat module. If resistance is 10,000 ohms or less, repair short in Red/Black wire.
  7. Test Power Supply To Driver Seat Module  - Disconnect driver seat module harness connector C311. Measure voltage at terminal No. 14 (Light Blue/White wire) at driver seat module harness connector C311. If battery voltage does not exist, go to next step. If battery voltage exists, go to step 11).
  8. Test Fuse No. 35  - Remove fuse No. 35 (10-amp) from instrument panel fuse box. If fuse is blown, go to next step. If fuse is not blown, repair open in Light Blue/White wire.
  9. Test Red Wire For Open  - Measure voltage at input side of fuse No. 35. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Red wire.
  10. Test Light Blue/White Wire For Short  - Ensure fuse No. 35 is still removed. Measure resistance between ground and terminal No. 14 (Light Blue/White wire) at driver seat module harness connector C311. If resistance is greater than 10,000 ohms, replace driver seat module. If resistance is 10,000 ohms or less, repair short in Light Blue/White wire.
  11. Test Black/Light Blue Wire For Open  - Measure resistance between ground and terminal No. 1 (Black/Light Blue wire) at driver seat module harness connector C311. If resistance is greater than 5 ohms, repair open in Black/Light Blue wire. If resistance is 5 ohms or less, test module communications. See MODULE COMMUNICATIONS NETWORK article.
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