Last Modified: 4-30-2014 6.6 C Doc ID: RM0000018N4001X agn Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 - ] Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: 21; Solar Sensor Circuit; 2006 MY LX470 [05/2005 - ] DTC 21 Solar Sensor Circuit DESCRIPTION A photodiode in the solar sensor detects solar radiation and sends signals to the A/C amplifier. DTC NO. DETECTION ITEM TROUBLE AREA 21 Open or short in solar sensor circuit Please note that display of diagnostic trouble code 21 is not abnormal when the sensor is not receiving solar radiation Solar sensor Harness or connector between solar sensor and A/C amplifier A/C amplifier WIRING DIAGRAM INSPECTION PROCEDURE PROCEDURE 1.
CHECK AIR CONDITIONING AMPLIFIER (a) Remove the A/C amplifier with the connectors still connected. cardi