How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2008 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

VEHICLE BROUGHT TO WORKSHOP
CUSTOMER PROBLEM ANALYSIS
1. Interview the customer and confirm the trouble.
  1. Confirm the problem by duplicating the conditions described by the customer.
BASIC INSPECTION
1. Basic inspection.
  1. Measure the battery voltage.
    Standard voltage:
    
    11 to 14 V
2. with Navigation system:
  Check the power supply to the multi-display.
  1. Turn the ignition switch to the ACC position.
  2. Check whether the display appears on the multi-display.
3. without Navigation system:
  Check the power supply to the radio receiver.
  1. Turn the ignition switch to the ACC position.
  2. Check whether the display appears on the radio receiver.
DISPLAY DOES NOT APPEAR (GO TO NAVIGATION SYSTEM OR AUDIO AND VISUAL SYSTEM ).

DISPLAY APPEARS (Go to step 4 ).
PROBLEM SYMPTOMS TABLE
1. Refer to PROBLEM SYMPTOMS TABLE .
CIRCUIT INSPECTION AND PART INSPECTION
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST
NEXT: END