Download
Table of Contents > CKP Pattern Clear/CKP Pattern Learn Procedure

Honda CR-V Fuel & Emission System Troubleshooting & Testing ➜ CKP Pattern Clear/CKP Pattern Learn Procedure

Test condition IG LOCK (0)  
PCM connector A (49P): disconnected  
Test circuit F CAN-L  
Test point 1 PCM connector A (49P) No. 4 (RED)  
Test point 2 DLC (16P) No. 14 (RED)  
Fig. 14: Checking For Continuity Between Test Points 1 And 2  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : The F CAN-L wire is OK. Update the PCM See PCM REMOVAL AND  
INSTALLATION or PCM UPDATE if it does not have the latest software, or substitute a  
known-good PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE, then  
recheck. If the symptom/indication goes away and the PCM was updated, troubleshooting is  
complete. If the symptom/indication goes away and the PCM was substituted, replace the original  
PCM See PCM REMOVAL AND INSTALLATION or PCM UPDATE.  
NO : Repair an open in the F CAN-L wire between the PCM (A4) and the DLC terminal No. 14.  
CKP PATTERN CLEAR/CKP PATTERN LEARN PROCEDURE  
PROCEDURE  
1. HDS DLC - Connection  
1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the  
dashboard.  
2. Turn the ignition switch to ON (II).  
3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC  
circuit troubleshooting.  
Fig. 15: Identifying Data Link Connector (DLC)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
2. CKP Pattern - Clear/Learn  
1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the  
dashboard.  
2. Turn the ignition switch to ON (II).  
3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC  
circuit troubleshooting.  
4. Select CRANK PATTERN in the ADJUSTMENT MENU with the HDS.  
5. Select CRANK PATTERN CLEAR, and clear the CKP pattern.  
6. Select CRANK PATTERN LEARNING with the HDS, and follow the screen prompts.  
7. After learning, turn the ignition switch to LOCK (0).  
8. Disconnect the HDS from the DLC.  
Fig. 16: Identifying Data Link Connector (DLC)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
FUEL AND EMISSIONS SYSTEMS DIAGNOSTIC INTERVIEW - ENGINE  
STALLS  
ENGINE STALLS-DIAGNOSTIC INTERVIEW  
1.  
B:  
Modified  
A: No modification  
Accessories/modifications  
Booming noise, vibration occurs when deceleration, stopping,  
engine stalls  
Engine stalls without vibrations as if stopped by turning off the  
ignition switch  
2. Situation when occurred  
3. Situation when occurred  
ENGINE STALLS CONDITION-POSSIBLE CAUSE PATTERN CHART FROM DIAGNOSTIC  
INTERVIEW  
Conditions when the engine stalls  
Possible causes  
"Hard to start engine", "engine stall" sometimes  
occurs due to a fault in the ignition system, intake  
duct, intake manifold, exhaust system.  
Pattern  
1
Accessories/modifications  
(Intermittent failure may occur due to modification)  
The following intermittent failure may exist.  



Intermittent failure of PGM-FI main relay 2  
Faulty fuel supply (parameter ST FUEL TRIM)  
Pattern Booming noise, vibration occurs when  
deceleration, stopping, engine stalls  
2
Delay of EGR function (parameter EGR) (only  
vehicles with EGR)  

Delay of VTEC, VTC system function  
(parameter VTEC) (only vehicles with VTEC or  
VTC)