Inspection Procedure
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
Start the inspection from step 1 in the case of using the intelligent tester, and start from step 2 in the case of not using the intelligent tester.
- READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch to ON and push the intelligent tester main switch ON.
- Select the item below in the DATA LIST, and read the display on the intelligent tester.
BGW:
DATA LIST TABLEItem Measurement Item/Display (Range) Normal Condition Diagnostic Note ALT L SIG Alternator (Generator) signal/ON or OFF ON: Engine is running
OFF: Engine is stopping- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG: Go to next step.
- INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (L)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the voltage between terminal L of the instrument panel J/B assembly (driver side J/B assembly) and body ground.
Standard voltage
TERMINAL SPECIFIED CONDITIONTerminal No. (Symbols) Condition Specified Condition B3-14 - Body ground (L - Body ground) Engine OFF → ON 0 V → 10 to 14 V
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
- Measure the voltage between terminal L of the instrument panel J/B assembly (driver side J/B assembly) and body ground.