Special Tools Required

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

Vacuum pump/gauge, 0-30 in.Hg, Snap-on YA4000A or equivalent, commercially available

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .
Information marked with an asterisk (*1) applies to '09-10 models and '11-12 models (M/T).
Information marked with an asterisk (*2) applies to '11-12 models (A/T).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine. Hold the engine speed at 3, 000 rpm without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0443 indicated?

YES: Go to step 5.

NO: Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the EVAP canister purge valve and the ECM/PCM.
Turn the ignition switch to LOCK (0), and allow the engine to cool below HOT (60°C).
Disconnect the vacuum hose (A) from the purge valve (B) in the engine compartment, and connect a vacuum pump/gauge, 0-30 in.Hg, to the hose.

Fig 1: Identifying Vacuum Hose & Purge Valve
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Start the engine, and let it idle.
Is there vacuum?

YES: Go to step 8.

NO: Go to step 14.
Turn the ignition switch to LOCK (0).
Disconnect the EVAP canister purge valve 2P connector.
Check for continuity between EVAP canister purge valve 2P connector terminal No. 2 and body ground.
Is there continuity?

YES: Go to step 11.

NO: Go to step 23.

Fig 2: Checking Continuity Between EVAP Canister Purge Valve 2P Connector Terminal No. 2 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Jump the SCS line with the HDS.
Disconnect ECM/PCM connector B (49P).
Check for continuity between EVAP canister purge valve 2P connector terminal No. 2 and body ground.
Is there continuity?

YES: Repair short in the wire between the EVAP canister purge valve and the ECM/PCM (B3), then go to step 24.

NO: Go to step 30.

Fig 3: Checking Continuity Between EVAP Canister Purge Valve 2P Connector Terminal No. 2 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to LOCK (0).
Disconnect the EVAP canister purge valve 2P connector.
Turn the ignition switch to ON (II).
Measure the voltage between EVAP canister purge valve 2P connector terminal No. 1 and body ground.
Is there battery voltage?

YES: Go to step 18.

NO: Repair open in the wire between the EVAP canister purge valve and the No. 12 ACG (ALTERNATOR) (10 A) fuse in the driver's under-dash fuse/relay box, then go to step 24.

Fig 4: Checking Voltage Between EVAP Canister Purge Valve 2P Connector Terminal No. 1 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect ECM/PCM connector B (49P).
Check for continuity between ECM/PCM connector terminal B3 and EVAP canister purge valve 2P connector terminal No. 2.
Is there continuity?

YES: Go to step 22.

NO: Repair open in the wire between the EVAP canister purge valve and the ECM/PCM (B3), then go to step 24.

Fig 5: Checking Continuity Between ECM/PCM Connector Terminal B3 & EVAP Canister Purge Valve 2P Connector Terminal No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
At the valve side, measure the resistance between EVAP canister purge valve 2P connector terminals No. 1 and No. 2.
Is there about 23 - 26 Ω at room temperature?

YES: Go to step 30.

NO: Go to step 23.

Fig 6: Checking Resistance Between EVAP Canister Purge Valve 2P Connector Terminals No. 1 & No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Replace the EVAP canister purge valve (see EVAP CANISTER PURGE VALVE REPLACEMENT ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the ECM/PCM with the HDS.
Do ECM/PCM IDLE LEARN PROCEDURE .
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0443 indicated?

YES: Check for poor connections or loose terminals at the EVAP canister purge valve and the ECM/PCM, then go to step 1.

NO: Go to step 29.
Monitor the OBD STATUS for DTC P0443 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?

YES: Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 28, go to the indicated DTC's troubleshooting.

NO: If the HDS indicates FAILED, check for poor connections or loose terminals at the EVAP canister purge valve and the ECM/PCM, then go to step 1. If the HDS indicates EXECUTING, OUT OF CONDITION, or NOT COMPLETED, keep idling until a result comes on.
Reconnect all connectors.
Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
Start the engine, and let it idle.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0443 indicated?

YES: Check for poor connections or loose terminals at the EVAP canister purge valve and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 32. If the ECM/PCM was substituted, go to step 1.

NO: Go to step 34.
Monitor the OBD STATUS for DTC P0443 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?

YES: If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Pending or Confirmed DTCs were indicated in step 33, go to the indicated DTC's troubleshooting.

NO: If the HDS indicates FAILED, check for poor connections or loose terminals at the EVAP canister purge valve and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 32. If the ECM/PCM was substituted, go to step 1. If the HDS indicates EXECUTING, OUT OF CONDITION, or NOT COMPLETED, keep idling until a result comes on.