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Contents Section: Ignition Switch/steering Lock All sections

Steering Column Switches: Diagnosis Ford Escape I рестайлинг

Ignition Switch/steering Lock 7 illustrations ~1461 words

Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of mechanical or electrical damage. VISUAL INSPECTION CHART Mechanical Electrical Multifunction switch Ignition key Ignition switch Steering column shrouds Circuitry Smart junction box (SJB) fuse 4 (10A) SJB Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A) NOTE: For multifunction switch concerns, refer to one of the following articles: For exterior lighting, refer to «EXTERIOR LIGHTING»(ref-232250) . For wipers and washers, refer to «WIPERS AND WASHERS»(ref-232259) .
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  4. If the cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle: check that the program card is correctly installed. check the connections to the vehicle. check the ignition switch position.
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  6. Carry out the diagnostic tool data link test. If the diagnostic tool responds with: CAN or ISO circuit fault; all electronic control units no response/not equipped, refer to «MODULE COMMUNICATIONS NETWORK»(ref-232245) . No response/not equipped for the SJB, refer to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the SJB.
  7. If the DTCs retrieved are related to the concern, go to the «SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(ref-232258-S21307103132006051600000) .
  8. If no DTCs related to the concern are retrieved, GO to «SYMPTOM CHART»(ref-232258-S12791836382006051600000) .

Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index

DTCDescriptionSourceAction
B1352Ignition KEY IN Circuit FailureSJBREFER to WARNING DEVICES .
B1359Ignition RUN/ACC Circuit FailureSJBGO to PINPOINT TEST B .
B1555Ignition RUN/START Circuit FailureSJBIf DTC B1359 is also retrieved, GO to PINPOINT TEST B . If DTC B1359 is not retrieved, GO to PINPOINT TEST C .

SMART JUNCTION BOX DIAGNOSTIC TROUBLE CODE INDEX

Symptom Chart

ConditionPossible SourcesAction
No communication with the smart junction box (SJB)SJB CircuitryREFER to MULTIFUNCTION ELECTRONIC MODULES to continue diagnosis of the SJB.
The ignition switch is inoperativeSmart junction box (SJB) fuse 4 (10A) Ignition switch Circuitry Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A)GO to PINPOINT TEST A .
No power in RUN/ACCSmart junction box (SJB) fuse 4 (10A) Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A) Ignition switch CircuitryGO to PINPOINT TEST B .
No power in RUN/STARTSmart junction box (SJB) fuse 4 (10A) Battery junction box (BJB) fuse(s): 1 (25A) 17 (50A) Ignition switch CircuitGO to PINPOINT TEST C .
The ignition key is hard to turnIgnition key Ignition lock cylinder Ignition switchGO to PINPOINT TEST D .
The multifunction switch does not operate correctlyMultifunction switchFor a concern with the exterior lighting, REFER to EXTERIOR LIGHTING .
Smart junction box (SJB)For a concern with the wipers and washers, REFER to WIPERS AND WASHERS .

SYMPTOM CHART

Scheme 1

Scheme 1: Ignition Switch C250
Scheme 1: Ignition Switch C250

Scheme 2

Scheme 2: Smart Junction Box (SJB) C2280a
Scheme 2: Smart Junction Box (SJB) C2280a

PINPOINT TEST A: THE IGNITION SWITCH IS INOPERATIVE

CAUTIONUse the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4
  1. A1 CHECK THE IGNITION SWITCH FOR POWER. Key in OFF position. Disconnect: Ignition Switch C250. Measure the voltage between the ignition switch C250-4, circuit 1715 (RD), harness side and ground. Is the voltage greater than 10 volts? Yes : GO to A2. No : GO to A3 .
  2. A2 CHECK THE IGNITION SWITCH Carry out the Ignition Switch Component Test. Refer to «COMPONENT TESTING»(ref-233779) article for component testing. Is the ignition switch OK? Yes : GO to A4 . No : INSTALL a new ignition switch. REFER to «IGNITION SWITCH»(ref-232258-S20202532202006051600000) . CLEAR the DTCs. REPEAT the self-test.
  3. A3 CHECK CIRCUIT 1715 (RD) FOR AN OPEN Disconnect: SJB C2280a. Measure the resistance between the ignition switch C250-4 circuit 1715 (RD), harness side and the SJB C2280a-6 circuit 1715 (RD), harness side. Is the resistance less than 5 ohms? Yes : GO to A4. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. A4 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes : INSTALL a new SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . 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.

PINPOINT TEST B: NO POWER IN ACC/RUN

CAUTIONUse the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6
  1. B1 RETRIEVE THE SJB DTCS Connect the diagnostic tool. Key in ON position. Enter the following diagnostic mode on the diagnostic tool: SJB Self-Test. Carry out the SJB self-test. Record the SJB continuous DTCs. Is DTC B1359 or B1555 present? Yes : If only DTC B1359 is present, GO to B2. If only DTC B1555 is present, GO to B3 . If both DTCs are present, GO to B4 . 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.
  2. B2 CHECK CIRCUIT 297 (BK/LG) FOR AN OPEN OR A SHORT TO GROUND Key in OFF position. Disconnect: SJB C2280a. Disconnect: Ignition Switch C250. Measure the resistance between the ignition switch C250-6 circuit 297 (BK/LG), harness side and the SJB C2280a-16 circuit 297 (BK/LG), harness side; and between the ignition switch C250-6 circuit 297 (BK/LG), harness side and ground. Is the resistance less than 5 ohms between the components, and greater than 10,000 ohms to ground? Yes : GO to B4 . No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  3. B3 CHECK CIRCUIT 1050 (LG/VT) FOR AN OPEN OR A SHORT TO GROUND Key in OFF position. Disconnect: SJB C2280a. Disconnect: Ignition Switch C250. Measure the resistance between the ignition switch C250-1 circuit 1050 (LG/VT), harness side and the SJB C2280a-7 circuit 1050 (LG/VT), harness side; and between the ignition switch C250-1 circuit 1050 (LG/VT), harness side and ground. Is the resistance less than 5 ohms between the components, and greater than 10,000 ohms to ground? Yes : GO to B4. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. B4 CHECK THE IGNITION SWITCH Disconnect: Ignition Switch C250. Carry out the Ignition Switch Component Test. Refer to «COMPONENT TESTING»(ref-233779) article for component testing. Is the ignition switch OK? Yes : GO to B5. No : INSTALL a new ignition switch. REFER to «IGNITION SWITCH»(ref-232258-S20202532202006051600000) . CLEAR the DTCs. REPEAT the self-test.
  5. B5 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion 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. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . 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.

PINPOINT TEST C: NO POWER IN START/RUN

CAUTIONUse the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. C1 CHECK CIRCUIT 1050 (LG/VT) FOR AN OPEN OR A SHORT TO GROUND Key in OFF position. Disconnect: SJB C2280a. Disconnect: Ignition Switch C250. Measure the resistance between the ignition switch C250-1 circuit 1050 (LG/VT), harness side and the SJB C2280a-7 circuit 1050 (LG/VT), harness side; and between the ignition switch C250-1 circuit 1050 (LG/VT), harness side and ground. Is the resistance less than 5 ohms between the components, and greater than 10,000 ohms to ground? Yes : GO to C2. No : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  2. C2 CHECK THE IGNITION SWITCH Carry out the Ignition Switch Component Test. Refer to «COMPONENT TESTING»(ref-233779) article for component testing. Is the ignition switch OK? Yes : GO to C3. No : INSTALL a new ignition switch. REFER to «IGNITION SWITCH»(ref-232258-S20202532202006051600000) . CLEAR the DTCs. REPEAT the self-test.
  3. C3 CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and determine if the concern is still present. Is the concern still present? Yes : INSTALL a new SJB. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-232247) . 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.

PINPOINT TEST D: THE IGNITION KEY IS HARD TO TURN

  1. D1 CHECK THE STEERING WHEEL POSITION Check to see if the steering wheel is turned and locked full left or full right. Is the steering wheel turned left or right and locked? Yes : Apply turning effort to the steering wheel in the direction of lock while turning the key to the ON position. TEST the system for normal operation. No : GO to D2.
  2. D2 CHECK THE IGNITION KEY Check the ignition key for burrs, damage, or an incorrect cut. Is the key OK? Yes : GO to D3. No : REPLACE the ignition key. TEST the system for normal operation.
  3. D3 CHECK THE IGNITION LOCK CYLINDER Remove the ignition lock cylinder. Refer to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-232261) . Check the ignition lock cylinder by rotating the ignition lock cylinder through all of the switch positions. Does the ignition lock cylinder stick or bind in any of the positions? Yes : INSTALL a new ignition lock cylinder. REFER to «HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS»(ref-232261) . TEST the system for normal operation. No : GO to D4.
  4. D4 CHECK THE IGNITION SWITCH Check for a binding or sticking ignition switch. Is the ignition switch OK? Yes : REPAIR or LUBRICATE the steering column lock module as necessary. TEST the system for normal operation. No : INSTALL a new ignition switch. REFER to «IGNITION SWITCH»(ref-232258-S20202532202006051600000) . TEST the system for normal operation.

Scheme 7

Scheme 7: Ignition Switch
Scheme 7: Ignition Switch

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