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Table of Contents > PCM Update

Honda CR-V Fuel & Emission System Troubleshooting & Testing ➜ PCM Update

Fig. 61: Checking For Continuity Between PCM Connector B (49P) Terminals And Body  
Ground  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Fig. 62: Checking For Continuity Between PCM Connector C (49P) Terminals And Body  
Ground  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
Is there continuity?  
YES : The PG1/PG2/LG2 wires are 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 PG1, PG2, and/or LG2 wire between the PCM (B1, B10, C2, C15, C20)  
and G101.  
PCM UPDATE  
Special Tool Required  
Image  
Description/Tool Number  
MVCI unit with the latest control module (CM)  
update software installed*  
PROCEDURE  
1. PCM - Update  
NOTE:  
Check any official Honda service website for more service information  
about updating the MVCI and control units.  
2. Warm Up The Engine  
Start the engine. Hold the engine speed at 3, 00 rpm without load in P or N until the radiator fan comes  
on, then let it idle.  
3. PCM - Idle Learn  
1. Let the engine idle for about 5 minutes with the throttle fully closed.  
NOTE:  
If the radiator fan comes on, do not include its running time in the 5  
minutes.  
2. After learning, turn the ignition switch to LOCK (0).  
4. 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.  
Fig. 63: Identifying Data Link Connector (DLC)  
Courtesy of AMERICAN HONDA MOTOR CO., INC.  
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.  
PCV SYSTEM COMPONENT LOCATION INDEX