Inspection Procedure
- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY - MAIN BODY ECU)
- Disconnect the L59 display connector
- Disconnect the L12 ECU connector
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition L59-22 (DR) - L12-16 (ACAN) Always Below 1 Ω L59-22 (DR) - Body ground Always 10 kΩ or higher
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step
- INSPECT MAIN BODY ECU (OUTPUT SIGNAL)
- Reconnect the L12 ECU connector.
- Power switch is ON (IG)
- Turn the light control switch to the TAIL or HEAD position
- Set the instrument panel light control to less than maximum (to activate the dimmer function that works when the light control switch is in the TAIL position).
- Measure the voltage according to the value(s) in the table below.
Standard voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester connection Condition Specified condition L12-16 (ACAN) - Body ground Automatic light control sensor is covered Above 9 V
NG: GO TO LIGHTING SYSTEM (See PROBLEM SYMPTOMS TABLE )
OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )