Pinpoint Test F: All The Courtesy Lamps Stay On Continuously
Interior Lighting
Pinpoint Tests
Pinpoint Test F: All The Courtesy Lamps Stay On Continuously
Refer to Wiring Diagram Set 71 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Cluster and Panel Illumination for schematic and connector information. Diagrams By Number
Refer to Wiring Diagram Set 89 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Interior Lamps for schematic and connector information. Diagrams By Number
Refer to Wiring Diagram Set 117 (Escape/Mariner, Escape Hybrid/Mariner Hybrid), Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
Normal Operation - Door Ajar Input
The Smart Junction Box (SJB) sends a voltage signal to the door ajar switches through circuits CPL26 (GN/VT) (LH front door), CPL31 (WH) (RH front door), CPL36 (GN) (LH rear door) and CPL39 (YE) (RH rear door). Ground is provided to the door ajar switches through circuit GD182 (BK/GY). The door ajar switch is closed with the door closed. When the door is opened, the signal to ground is interrupted indicating an open door to the SJB.
Liftgate/Liftgate Glass Ajar Input
The SJB sends a voltage signal to the liftgate ajar switch through circuit CPL58 (GY/OG). The voltage signal passes through the liftgate ajar switch to the liftgate glass ajar switch through circuit CPL44 (YE/OG). The signal is then routed to ground through circuit GD182 (BK/GY).
The liftgate and the liftgate glass ajar switches are wired in series and are monitored from a single circuit by the SJB. The liftgate and liftgate glass ajar switches are closed when the liftgate and liftgate glass are closed. When the liftgate or liftgate glass is opened, the signal to ground is interrupted indicating an open liftgate or liftgate glass (the SJB cannot determine which is open).
Instrument Panel Dimmer Switch Input
The SJB monitors the instrument panel dimmer switch status from circuit CLN17 (BN) to determine if the courtesy lamps are requested. When the instrument panel dimmer switch is rotated to the DOME LAMP position, ground is supplied to circuit CLN17 (BN).
The SJB supplies voltage to the interior courtesy lamps through circuit VLN33 (GY/VT) when any of the following conditions exist:
- Any door, liftgate or liftgate glass is opened.
- The instrument panel dimmer switch is place in the DOME LAMP position.
- A correct unlock code from the keyless entry keypad or an unlock request from a programmed Remote Keyless Entry (RKE) transmitter is detected.
B213A-B2077:
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Instrument panel dimmer switch
- Liftgate ajar switch (integrated into the liftgate latch)
- Liftgate glass ajar switch (integrated into the liftgate window latch)
- Door ajar switch (integrated into the door latch)
- SJB
PINPOINT TEST F: ALL THE COURTESY LAMPS STAY ON CONTINUOUSLY
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Make sure the interior lamp switch is in the DOOR position before carrying out diagnostics.
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F1 CHECK FOR SJB OUTPUT DTCs
- Ignition OFF.
- Use the recorded results from the SJB self-test.
- Is DTC B2A35 present?
Yes
GO to F2.
No
GO to F3.
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F2 CHECK THE SJB INTERIOR COURTESY LAMP OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Disconnect: SJB C2280a.
- Ignition ON.
- Observe the interior courtesy lamps.
- Do the interior courtesy lamps continue to illuminate?
Yes
REPAIR circuit VLN33 (GY/VT) for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
No
GO to F16.
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F3 CHECK THE SJB INSTRUMENT PANEL DIMMER SWITCH DOME LAMP REQUEST PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB instrument panel dimmer switch dome lamp request PID (DOMELM_SW).
- Does the PID indicate the instrument panel dimmer switch is in the DOME LAMP position?
Yes
GO to F4.
No
GO to F6.
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F4 CHECK THE INSTRUMENT PANEL DIMMER SWITCH
- Ignition OFF.
- Disconnect: Instrument Panel Dimmer Switch C2065.
- Close all the doors and wait 30 seconds.
- Do the courtesy lamps continue to illuminate?
Yes
GO to F5.
No
INSTALL a new instrument panel dimmer switch. CLEAR the DTCs. REPEAT the self-test.
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F5 CHECK THE DOME LAMP REQUEST INPUT CIRCUIT FOR A SHORT TO GROUND
- Disconnect: SJB C2280b.
- Measure the resistance between the instrument panel dimmer switch C2065-5, circuit CLN17 (BN), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F16.
No
REPAIR circuit CLN17 (BN) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
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F6 CHECK THE SJB DOOR AJAR PIDs
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB door ajar switch PIDs (D_DR_SW, P_DR_SW, LRDR_SW, and RRDR_SW) while opening and closing all the doors.
- Do all the door ajar switch PID values agree with the door positions?
Yes
GO to F10.
No
GO to F7.
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F7 CHECK FOR VOLTAGE TO THE DOOR AJAR SWITCH
- Ignition OFF.
- Disconnect: Suspect Door Ajar Switch.
- Measure the voltage between the suspect door ajar switch, component side and ground as follows:
- Is the voltage greater than 10 volts?
Yes
GO to F8.
No
GO to F9.
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F8 CHECK FOR VOLTAGE TO THE DOOR AJAR SWITCH USING THE CONNECTOR GROUND
- Measure the voltage between the suspect door ajar switch connector, harness side as follows:
- Is the voltage greater than 10 volts?
Yes
INSTALL a new door latch in question. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR the ground circuit in question for an open. CLEAR the DTCs. REPEAT the self-test.
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F9 CHECK THE DOOR AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
- Disconnect: SJB C2280c.
- Measure the resistance between the suspect door ajar switch, harness side and the SJB, harness side as follows:
- Is the resistance less than 5 ohms?
Yes
GO to F16.
No
REPAIR the circuit in question for an open. CLEAR the DTCs. REPEAT the self-test.
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F10 CHECK THE SJB LIFTGATE/LIFTGATE GLASS AJAR PID
- Enter the following diagnostic mode on the scan tool: SJB DataLogger.
- Monitor the SJB liftgate/liftgate glass ajar switch PID (DECKLID) while opening and closing the liftgate and then the liftgate glass.
- Does the liftgate/liftgate glass ajar switch PID value agree with the liftgate and liftgate glass positions?
Yes
GO to F16.
No
GO to F11.
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F11 CHECK FOR VOLTAGE TO THE LIFTGATE GLASS AJAR SWITCH
- Ignition OFF.
- Disconnect: Liftgate Glass Ajar Switch C479.
- NOTE: Make sure the liftgate is closed for correct test results.
- Measure the voltage between the liftgate glass ajar switch C479-3, circuit CPL44 (YE/OG), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to F12.
No
GO to F13.
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F12 CHECK FOR VOLTAGE TO THE LIFTGATE GLASS AJAR SWITCH USING THE CONNECTOR GROUND
- Measure the voltage between the liftgate glass ajar switch C479-3, circuit CPL44 (YE/OG), harness side and the liftgate glass ajar switch C479-2, circuit GD182 (BK/GY), harness side.
- Is the voltage greater than 10 volts?
Yes
INSTALL a new liftgate glass latch. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR circuit GD182 (BK/GY) for an open. CLEAR the DTCs. REPEAT the self-test.
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F13 CHECK FOR VOLTAGE TO THE LIFTGATE AJAR SWITCH
- Disconnect: Liftgate Ajar Switch C478.
- Measure the voltage between the liftgate ajar switch C478-2, circuit CPL58 (GY/OG), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to F14.
No
GO to F15.
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F14 CHECK FOR VOLTAGE TO THE LIFTGATE GLASS AJAR SWITCH USING THE CONNECTOR GROUND
NOTE: Make sure the liftgate glass switch is connected and the liftgate glass is closed for correct test results.
- Connect: Liftgate Glass Ajar Switch C479.
- Measure the voltage between the liftgate ajar switch C478-2, circuit CPL58 (GY/OG), harness side and the liftgate ajar switch C478-1, circuit CPL44 (YE/OG), harness side.
- Is the voltage greater than 10 volts?
Yes
INSTALL a new liftgate ajar switch. CLEAR the DTCs. REPEAT the self-test.
No
REPAIR circuit CPL44 (YE/OG) for an open. CLEAR the DTCs. REPEAT the self-test.
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F15 CHECK THE LIFTGATE/LIFTGATE GLASS AJAR INPUT CIRCUIT FOR AN OPEN
- Disconnect: SJB C2280c.
- Measure the resistance between the SJB C2280c-16, circuit CPL58 (GY/OG), harness side and the liftgate ajar switch C478-2, circuit CPL58 (GY/OG), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to F16.
No
REPAIR circuit CPL58 (GY/OG) for an open. CLEAR the DTCs. REPEAT the self-test.
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F16 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new SJB. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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