DTC Troubleshooting: B2988 (D-B1), B2988 (D-B2), B2988 (61)

DTC B2988 or DTC screen D-B1  : An open in the A/C compressor variable capacity control solenoid circuit DTC B2988 or DTC screen D-B2  : A short in the A/C Compressor variable capacity control solenoid circuit DTC B2988 or DTC indicator 61  : A problem in the A/C compressor variable capacity control solenoid circuit

DTCs (AC)

1. Problem verification

   -1. Clear the DTCs 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. Wait for at least 1 minute.

   -5. Check for DTCs.

   DTC Description	DTC
   B2988 A problem in the A/C compressor variable capacity control solenoid circuit

   Is DTC B2988 or Error on the DTC screen D-B1 (climate control panel without display) or D-B2 (climate control panel without display) or 61 (climate control panel with display) indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure. Check for loose wires or poor connections on the A/C compressor variable capacity control solenoid circuit.

2. Open wire check (SOL OUT line)

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

   -2. Disconnect the following connectors.

   Climate control unit connector A (32P)

   A/C compressor clutch 3P connector

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector A (32P): disconnected
   	A/C compressor clutch 3P connector: disconnected
   Test point 1	Climate control unit connector A (32P) No. 30
   Test point 2	A/C compressor clutch 3P connector (female terminals) No. 2:

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The SOL OUT wire is not open. Go to step 3.

   NO 

   Repair an open in the SOL OUT wire.

3. Open wire check (SOL IN line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector A (32P): disconnected
   	A/C compressor clutch 3P connector: disconnected
   Test point 1	Climate control unit connector A (32P) No. 14
   Test point 2	A/C compressor clutch 3P connector (female terminals) No. 3:

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The SOL IN wire is not open. Go to step 4.

   NO 

   Repair an open in the SOL IN wire.

4. Shorted wire check (SOL OUT line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector A (32P): disconnected
   	A/C compressor clutch 3P connector: disconnected
   Test point 1	Climate control unit connector A (32P) No. 30
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the SOL OUT wire.

   NO 

   The SOL OUT wire is OK. Go to step 5.

5. Shorted wire check (SOL IN line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector A (32P): disconnected
   	A/C compressor clutch 3P connector: disconnected
   Test point 1	Climate control unit connector A (32P) No. 14
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the SOL IN wire.

   NO 

   The SOL IN wire is OK. Go to step 6.

6. A/C compressor variable capacity control solenoid check

   -1. Test the A/C compressor variable capacity control solenoid .

   Is the variable capacity control solenoid OK?

   YES 

   Replace the climate control unit .

   NO 

   Replace the A/C compressor .