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Test 4A - Repairing Ignition Input Circuit

NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see appropriate chassis wiring diagram in the WIRING DIAGRAMS article.
  1. Ensure ignition is turned off. Disconnect VTA module. Turn ignition on. Using DRB-II, check voltage at terminal No. 8 (Dark Blue/White wire) of VTA module connector. If voltage is more than 10 volts, replace VTA module. Perform TEST VER-1  .
  2. If voltage is less than 10 volts, remove No. 4 fuse and inspect. If fuse is open (NG), check resistance at terminal No. 8 (Dark Blue/White wire) of VTA module connector with DRB-II. If resistance is less than 5 ohms, repair ignition voltage feed circuit terminal No. 8 (Dark Blue/White wire) shorted to ground. Perform TEST VER-1  .
  3. If resistance is more than 5 ohms, replace fuse. If fuse No. 4 is not open (good), check voltage feed circuit at fuse No. 4 (right side of receptacle) with DRB-II. If voltage is less than 10 volts, repair open circuit between fuse receptacle and terminal No. 8 (Dark Blue/White wire) of VTA module connector. Perform TEST VER-1  . If voltage is more than 10 volts, repair open circuit between pin No. 12 (Dark Blue wire) of VTA module connector and terminal No. 4 (Violet/Brown wire) of wiper circuit breaker of fuse block. Perform TEST VER-1  .
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