The Ambient Temperature Display Is Incorrect

THE AMBIENT TEMPERATURE DISPLAY IS INCORRECT





Description
- The displayed ambient air temperature is higher than the actual temperature.
- The displayed ambient air temperature is lower than the actual temperature.




Diagnosis Procedure
Regarding Wiring Diagram information, Meter.
1.CHECK AMBIENT SENSOR CIRCUITS BETWEEN COMBINATION METER AND AMBIENT SENSOR
1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector E211.
3. Check continuity between ambient sensor harness connector E211 terminals 1, 2 and ground.





4. Disconnect combination meter connector M24.
5. Check continuity between combination meter harness connector M24 terminal 18 and ambient sensor harness connector E211 terminal 1.





Is the inspection result normal?
YES - GO TO 2
NO - GO TO 3
2.CHECK A/C AUTO AMP. INPUT SIGNAL
1. Connect combination meter and ambient sensor connectors.
2. Turn ignition switch ON.
3. Select "HVAC" on CONSULT-III.
4. Using "AMB TEMP SEN" on "DATA MONITOR", compare the value of DATA MONITOR with actual ambient temperature. DATA MONITOR and actual ambient temperature should be close.
Does the DATA MONITOR value approximately match the actual ambient temperature?
YES - Replace combination meter.
NO - Using CONSULT-III, perform "Self-Diagnosis Results" of HVAC. Check if any DTCs are displayed in self-diagnosis results and repair the cause of the DTC first. CONSULT-III Function, "CONSULT-III
Function". If no DTCs are stored, replace ambient sensor.
3.CHECK AMBIENT SENSOR CIRCUITS BETWEEN COMBINATION METER AND IPDM E/R
1. Disconnect IPDM E/R connector E18.
2. Check continuity between combination meter harness connector M24 terminals 18, 20 and IPDM E/R harness connector E18 terminals 20 and 21.





3. Check continuity between combination meter harness connector M24 terminal 18 and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair harness or connector.
4.CHECK AMBIENT SENSOR CIRCUITS BETWEEN IPDM E/R AND AMBIENT SENSOR
1. Disconnect IPDM E/R connector E201.
2. Check continuity between IPDM E/R harness connector E201 terminals 99, 100 and ambient sensor harness connector E211 terminals 1 and 2.





3. Check continuity between IPDM E/R harness connector E201 terminal 100 and ground.





Is the inspection result normal?
YES - Replace IPDM E/R.
NO - Repair harness or connector.