Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSMAZDA2008CX-7 TOURING, 2.3 3, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSSECURITY SYSTEM AND LOCKS SYSTEMIMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING[ADVANCED KEYLESS SYSTEM]NO. 3 PCM REPLACEMENT PROCEDUREPROCEDURE

2008 Mazda CX-7 Touring, 2.3 3, AWD

No. 3 PCM Replacement Procedure: Procedure

2008 Mazda CX-7 Touring, 2.3 3, AWDSECTION Procedure

Fig 1: Key/Card Reference Chart

Courtesy of MAZDA MOTORS CORP.

Turn the ignition switch to the LOCK. position
Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure .)
Using a valid key or card key, turn the ignition switch to the ON position.
NOTE: Although the security light remains illuminated and DTC 23 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.
Verify that the keyless warning light illuminates for approx. 3 s, and then.goes out.
Select "BODY/SECURITY/PATS (immobilizer) function" from the M-MDS screen menu.
Select "Parameter Reset" from the M-MDS screen menu.
Perform the security access according to the directions on the M-MDS screen.
After verifying that the PATS function menu is displayed again on the M-MDS screen, select "Exit (From This Menu)" to finish the M-MDS procedure.
After Step 8 , wait 5 s or more, and then turn the ignition switch to the LOCK position.
Turn the ignition switch to the ON position.
After verifying that the security light and keyless warning light illuminates for 3 s or more turn the ignition switch I to the LOCK position.
Verify that the all keys can start the engine for 5 s or more after the procedure

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.