Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT AFS ECU
1. Disconnect the AFS ECU connector.
2. Measure the resistance according to the value (s) in the figure Fig 1 below.
Standard:

Fig 1: Resistance Reference Chart
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1. NG: Go to step 2
  
  Fig 2: Inspecting AFS ECU
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2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (SEE PROBLEM SYMPTOMS TABLE )
INSPECT AFS OFF SWITCH
1. Disconnect the AFS OFF switch connector.
2. Measure the resistance according to the value (s) in the figure Fig 3 below.
Standard:

Fig 3: Resistance Reference Chart
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1. NG: REPLACE AFS OFF SWITCH
Fig 4: Inspecting AFS OFF Switch
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1. OK: REPAIR OR REPLACE HARNESS OR CONNECTOR