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Diagnosis Procedure
1.CHECK FUSE
  1. Turn ignition switch OFF.
  2. Check that the following fuse is not blown:
    Power sourceFuse No.Capacity
    ACC485 A
Is the fuse blown?
Replace the blown fuse after repairing the affected circuit.
.
 
2.CHECK HEAD UP DISPLAY UNIT POWER SUPPLY
  1. Disconnect Head Up Display unit harness connector.
  2. Turn ignition switch ON.
  3. Check the voltage between Head Up Display unit harness connector and ground.
    +-Voltage
    (Approx.)
    Head Up Display unit
    ConnectorTerminal
    M1109Ground12.0 V
Is the inspection result normal?
.
.
 
3.CHECK HEAD UP DISPLAY UNIT POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF.
  2. Check the continuity between Head Up Display unit harness connector and fuse block (J/B).
    Head Up Display unitFuse block (J/B)Continuity
    ConnectorTerminalConnectorTerminal
    M1109M447CExisted
Is the inspection result normal?
Check the ACC power supply circuit.
Repair or replace harness or connector.
 
4.CHECK HEAD UP DISPLAY UNIT GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Check the continuity between Head Up Display unit harness connector and ground.
    Head Up Display unitGroundContinuity
    ConnectorTerminal
    M11016Existed
Is the inspection result normal?
INSPECTION END
Repair or replace harness or connector.