Inspection steps
- Reading the SSM3 data (ambient temperature input value)
- Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to CURRENT DATA DISPLAY & SAVE / SYSTEM OPERATION CHECK MODE
)CRITERIA SSM3 DISPLAY: [EACH SYSTEM CHECK] →[COMBINATION METER] →[CURRENT DATA DISPLAY & SAVE]
Item Name [Item symbol] Description of item/display item Normal value Remarks [Ambient Temperature] [Ambi Temp] Ambient air temperature is displayed.
Display range: -40 to 87.5°C {-40 to 189.5°F}- In open circuit: (-40°C (-40°F)) is displayed.
- In short-circuit: (87.5°C (189.5°F)) is displayed.
Thermistor ASSY system RESULTResult Go to The same value as the ambient temperature sensor is displayed (during the inspection according to the list of diagnostic codes) A The same value as the ambient temperature sensor is displayed (during the inspection according to the symptom table) B The displayed value is not the same as the ambient temperature sensor C B: Go to the related circuit test listed on the symptom table. (Refer to SYMPTOM TABLE )
C: Go to Step 3.
A: Go to Next Step
- Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to CURRENT DATA DISPLAY & SAVE / SYSTEM OPERATION CHECK MODE
)
- Checking diagnostic codes
- Clear the diagnostic code using the SSM3. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES )
- Using SSM3, check the diagnostic code again. (Refer to CHECKING/CLEARING DIAGNOSTIC CODES
)
Criteria: No DTC output
NG: Replacement of the combination meter ASSY (refer to REMOVAL )
OK: Complete
- Unit inspection of thermistor ASSY
- Remove the thermistor ASSY. (Refer to COOLER THERMISTOR (AMBIENT SENSOR) )
- Inspect the individual thermistor ASSY. (Refer to
UNIT INSPECTION
)
NG: Replacement of thermistor ASSY (Refer to COOLER THERMISTOR (AMBIENT SENSOR) )
OK: Go to Next Step
- Inspection of wire harness and connector (thermistor ASSY - combination meter ASSY)NOTE: For inspection procedures and precautions, refer to INSPECTION PROCEDURES FOR ELECTRICAL CIRCUITS AND HOW TO PERFORM .
- Disconnect connector D7 of the combination meter ASSY.
- Measure the resistance between the terminals. (For terminal arrangement, refer to ECM TERMINAL ARRANGEMENT
.)RESISTANCE (OPEN CIRCUIT CHECK)
Inspection terminals (Terminal symbol) Inspection conditions Standard value A48-1 - D7-24(TAM) Always Less than 1 Ω A48-2 - D7-25(SG-) Always Less than 1 Ω RESISTANCE (SHORT CIRCUIT CHECK)Inspection terminals Inspection conditions Standard value A48-1 - Chassis ground Always 10 kΩ or more A48-2 - Chassis ground Always 10 kΩ or more NG: Repair or replacement of wiring harness or connector
OK: Replacement of the combination meter ASSY (refer to REMOVAL )