Inspection Procedure

INSPECT FUSE (GAUGE1, ECU-ACC)
1. Check the continuity in the GAUGE 1 fuse.
2. Check the continuity in the ECU-ACC fuse.
NG: REPLACE FUSE

OK: Go to Next Step
INSPECT CLOCK ASSY
1. Remove the clock assy with the connector still connected.
2. Automatic A/C:
  Measure the voltage between terminal 24 (+B) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
3. Manual A/C:
  Measure the voltage between terminal 14 (+B) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
4. Measure the voltage between terminal 1 (GND) of the clock assy connector and body ground.
  Standard: Below 1 V
5. Turn the ignition switch to ON.
6. Automatic A/C:
  Measure the voltage between terminal 20 (IG) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
7. Manual A/C:
  Measure the voltage between terminal 12 (IG) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
8. Turn the ignition switch to ACC.
9. Automatic A/C:
  Measure the voltage between terminal 22 (ACC) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
10. Manual A/C:
  Measure the voltage between terminal 13 (ACC) of the clock assy connector and body ground.
  
  Standard: 10 to 14 V
  
  Fig 1: Identifying Clock Assy Connectors (Manual A/C And Automatic A/C)
  Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  
  NG: REPLACE CLOCK ASSY (See step 4 on REPLACEMENT )
  
  OK: REPAIR OR REPLACE HARNESS OR CONNECTOR