DTC B1232 (A-A6), B1232 (0A)

DTC B1232, DTC screen A-A6, or DTC screen 0A  : A short in the evaporator temperature sensor circuit

DTC (AC)

1. Problem verification

   -1. Clear the DTC with the HDS.

   -2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   -3. Do the Self-Diagnostic Function with the HDS or the climate control unit .

   -4. Check for DTCs.

   DTC Description	DTC
   B1232 A short in the evaporator temperature sensor circuit

   Is DTC B1232, Error on the DTC screen A-A6 (climate control panel without display), or DTC screen 0A (climate control panel with display) indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure. Check for loose wires or poor connections on the evaporator temperature sensor circuit.

2. Shorted wire check (TEVA line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the following connectors.

   Climate control unit connector B (24P)

   Evaporator temperature sensor 2P connector

   -3. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector B (24P): disconnected
   	Evaporator temperature sensor 2P connector: disconnected
   Test point 1	Climate control unit connector B (24P) No. 8
   Test point 2	Body ground

   Is there 1 MΩ or more?

   YES 

   The TEVA wire is not shorted. Go to step 3.

   NO 

   Repair a short to body ground in the TEVA wire.

3. Shorted wire check (TEVA line to SENS-COM line)

   -1. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector B (24P): disconnected
   	Evaporator temperature sensor 2P connector: disconnected
   Test point 1	Climate control unit connector B (24P) No. 8
   Test point 2	Climate control unit connector B (24P) No. 10

   Is there 1 MΩ or more?

   YES 

   The TEVA wire and the SENS-COM wire are OK. Go to step 4.

   NO 

   Repair a short in the TEVA wire to the SENS-COM wire.

4. Evaporator temperature sensor check

   -1. Test the evaporator temperature sensor .

   Is the evaporator temperature sensor OK?

   YES 

   Replace the climate control unit .

   NO 

   Replace the evaporator temperature sensor .