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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Manual A/C-Heater Systems) >> Diagnostic Tests >> DTC B2355: Evaporator Anti-Freeze Sensor >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2001 Saab 9-3 and 2000 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition off. Disconnect evaporator anti-freeze sensor 2-pin connector located at right side of A/C-heater assembly. See Figure . Connect a test light between battery voltage and harness side of sensor 2-pin connector terminal No. 2 (Black wire). See WIRING DIAGRAMS  .
  2. If test light comes on, go to next step. If test light does not come on, repair open or short to battery voltage in Black wire between sensor connector and DICE control module 70-pin connector terminal No. 30. See Fig 1 . When repairs are completed, go to step  4 .
  3. Turn ignition on. Measure voltage between harness side of evaporator sensor 2-pin connector terminals. Connect DVOM positive lead to terminal No. 1 (Green/Gray wire) and negative lead to terminal No. 2 (Black wire). If voltage is 6.5-8.5 volts, replace evaporator anti-freeze sensor. See EVAPORATOR ANTI-FREEZE SENSOR  under REMOVAL & INSTALLATION. If voltage is not 6.5-8.5 volts, repair open in Green/Gray wire between sensor terminal No. 1 and DICE control module 70-pin connector terminal No. 10. When repairs are completed, go to next step.
  4. Using scan tool, clear all DTCs from all systems. Recheck A/C system operation for original complaint. If A/C system is operating properly and no DTC has been detected, repair is complete. If a DTC has been detected, perform repairs as necessary.
Fig 1: Identifying Dashboard Integrated Central Electronics (DICE) Control Module Connector Terminals
G99G03412Courtesy of SAAB-SCANIA OF AMERICA, INC.
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