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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSMERCURY2011MARINER PREMIER, 2.5 7, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSHANDLES, LOCKS, LATCHES & KEYLESS ENTRY SYSTEMDIAGNOSIS AND TESTINGHANDLES, LOCKS, LATCHES AND ENTRY SYSTEMSSYMPTOM CHARTSYMPTOM CHART - ELECTRICAL

2011 Mercury Mariner Premier, 2.5 7, AWD

Symptom Chart - Electrical

2011 Mercury Mariner Premier, 2.5 7, AWDSECTION Symptom Chart - Electrical

SYMPTOM CHART - ELECTRICAL

Condition	Possible Sources	Action
No communication with the Smart Junction Box (SJB)	Wiring, terminals or connectors SJB	Refer to MODULE COMMUNICATIONS NETWORK article.
No communication with the Instrument Cluster (IC)	Wiring, terminals or connectors IC	Refer to MODULE COMMUNICATIONS NETWORK article.
All door locks are inoperative	Fuse Wiring, terminals or connectors SJB	Go to PINPOINT TEST A .
A single/more than one door lock is inoperative	Wiring, terminals or connectors Door lock actuator SJB	Go to PINPOINT TEST B .
The door locks operate only one way	Wiring, terminals or connectors SJB	Go to PINPOINT TEST C .
All door locks are inoperative from one switch	Wiring, terminals or connectors Door lock control switches	Go to PINPOINT TEST D .
The liftgate window latch release is inoperative/does not operate correctly	Wiring, terminals or connectors Liftgate window release switch Liftgate window latch SJB	Go to PINPOINT TEST F .
The liftgate latch release is inoperative/does not operate correctly	Wiring, terminals or connectors Liftgate release switch Liftgate relay Liftgate latch SJB	Go to PINPOINT TEST G .
The doors do not lock/unlock using the keyless entry keypad	Wiring, terminals or connectors Keyless entry keypad SJB	Go to PINPOINT TEST H .
The keyless entry keypad illumination is inoperative/does not operate correctly	Wiring, terminals or connectors Keyless entry keypad SJB	Go to PINPOINT TEST I .
The Remote Keyless Entry (RKE) transmitter is inoperative	Integrated Keyhead Transmitter (IKT) IKT battery IKT button pressed a substantial amount of times while outside the range of the vehicle IKT programming SJB	Go to PINPOINT TEST J .
An individual button/feature is inoperative from the Remote Keyless Entry (RKE) transmitter	Door locks Horn system Liftgate window latch release Turn signal system IKT	Go to PINPOINT TEST K .
The Remote Keyless Entry (RKE) transmitter has poor range performance	IKT IKT battery Aftermarket systems High power devices TV/radio transmission towers SJB	Go to PINPOINT TEST L .
The autolock does not operate correctly	Wiring, terminals or connectors Programming Door ajar switches SJB	Go to PINPOINT TEST M .
The auto-unlock does not operate correctly	Door ajar switches Ignition switch Vehicle speed signal SJB	Go to PINPOINT TEST N .
The smart unlock does not operate correctly	Key-in-ignition switch Door ajar switch input SJB	Go to PINPOINT TEST O .
The 2-step door unlocking does not operate correctly	The 2-step door unlocking is disabled	PROGRAM the 2-step door unlocking. Refer to STEPPED UNLOCK PROGRAMMING in this service information. TEST the system for normal operation.

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.