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Home >> Mercedes Benz >> 2001 >> ML430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Automatic A/C-Heater Systems) >> System Tests >> Reading Actual Values

Reading Actual Values

WARNING: This page is about a different car, the 2000 Mercedes-Benz C43, 2000 Mercedes-Benz C280, 1999 Mercedes-Benz C43, and 1999 Mercedes-Benz C280. However, it is still accessible from the selected car via links, so may be relevant.

Hand-Held Tester will display sensor values and software version. This is useful in checking the tolerance range of temperature sensors and refrigerant pressure. Temperature control is maintained during test. To view these readings connect HHT and follow displayed procedures. See ACTUAL VALUES  table for description of readings.

ACTUAL VALUES

Test Value (1) Component/Value Perform Test
01 In-Vehicle Temperature Sensor (2)DTC B1226: IN-VEHICLE TEMPERATURE SENSOR 
02 Outside Temperature Sensor (2)DTC B1422: SERIAL INTERFACE (K1) 
03 Left Heater Core Temperature Sensor (2)DTC B1228: LEFT HEATER CORE TEMPERATURE SENSOR 
04 Right Heater Core Temperature Sensor (2)DTC B1229: RIGHT HEATER CORE TEMPERATURE SENSOR 
05 Evaporator Temperature Sensor (2)DTC B1230: EVAPORATOR TEMPERATURE SENSOR 
06 Engine Coolant Temperature Sensor (2)DTC B1422: SERIAL INTERFACE (K1) 
07 Refrigerant Pressure (2)DTC B1232: REFRIGERANT PRESSURE SENSOR 
12 Software Version N/A
(1) Numbers skipped are not used.
(2) Located under DIAGNOSTIC TESTS.