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 MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSON-BOARD DIAGNOSTIC [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]DTC P1794:17 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

2011 Mazda 3 Mazdaspeed, 2.3 3

DTC P1794:17 [Advanced Keyless Entry And Push Button Start System]

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION DTC P1794:17 [Advanced Keyless Entry And Push Button Start System]

DESCRIPTION	High voltage in power supply circuit (+B2)
DETECTION CONDITION	Keyless control module power supply circuit (+B2) voltage is 16.5 V or more for 0.5 s.
POSSIBLE CAUSE	PCM DTC is stored Generator malfunction Keyless control module malfunction

DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	CONFIRM PCM DTC Perform the PCM DTC inspection using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [LF, L5] ). (See ON-BOARD DIAGNOSTIC TEST [L3 WITH TC] ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [LF, L5] ). (See DTC TABLE [L3 WITH TC] ).
1		No	Go to the next step.
2	INSPECT GENERATOR Inspect the generator. (See GENERATOR INSPECTION [LF, L5] ). (See GENERATOR INSPECTION [L3 WITH TC] ). Is there any malfunction?	Yes	Replace the generator, then go to the next step. (See GENERATOR REMOVAL/INSTALLATION [LF, L5] ). (See GENERATOR REMOVAL/INSTALLATION [L3 WITH TC] ).
2		No	Go to the next step.
3	VERIFY TROUBLESHOOTING COMPLETED Operate the advanced key to activate the keyless control module. Clear the DTC from the keyless control module using the M-MDS. (See CLEARING DTC [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] ). Operate the advanced key to activate the keyless control module. Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS. (See DTC INSPECTION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] ). Is the same DTC present?	Yes	Replace the keyless control module, then go to the next step. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION ).
3		No	Go to the next step.
4	VERIFY THAT NO OTHER DTCs ARE PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] ).
4		No	DTC troubleshooting completed.

RENDER: 1.0x

NO RELATED

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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.