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Home/Jaguar/X-type/Jaguar X-type I рестайлинг (2008-2009)/Repair manual/Ignition System/Engine Ignition: Diagnosis
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Engine Ignition: Diagnosis Jaguar X-type I рестайлинг

Ignition System 3 illustrations ~1798 words

Inspection and Verification

  1. Verify the customer concern.
  2. Visually inspect for obvious signs of electrical damage. Electrical Fuse 22, front power distribution box (60 Amp) Fuse 18, front power distribution box (10 Amp) Glow plug relay (R10, front power distribution box) Engine management control relay (R7, front power distribution box) Wiring harness Electrical connector(s) Glow plug(s) Engine control module (ECM) CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00. Failure to follow this instruction may result in damage to the vehicle. NOTE: This part contains references to Parameter Identifiers (PIDs). Where the Jaguar approved diagnostic system is not available, a scan tool may be used to access these PIDs, all of which give information, and some of which can be used to both read information and to activate components. The format of the information may vary, depending on the tool used. NOTE: As well as carrying out its normal function the glow plug indicator also acts as an engine check lamp which will flash continuously when a hard diagnostic trouble code (DTC) is detected by the ECM. Soft DTCs are also stored by the ECM but will only be identified if the system is checked for DTCs using the Jaguar approved diagnostic system or a scan tool. NOTE: If a DTC is detected, all DTCs must be cleared after the concern is repaired. Failure to clear all DTCs may cause driveability concerns. NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account. NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests. NOTE: If DTCs are recorded and the symptom is not present when performing the pinpoint tests, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.
  3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

Diagnostic trouble code (DTC) index

DTCConditionPossible sourceAction
P0380Glow plug heater circuitGlow plug heater circuit: relay driver open circuit, short circuitFor glow plug circuit tests, Refer to Pinpoint Test A .

Pinpoint Test A: GLOW PLUG CIRCUIT TESTS

Pinpoint Test A

A1 CHECK THE GLOW PLUG CIRCUIT(S) FOR SHORT CIRCUIT TO POWER
  1. click to open the image
  2. Engine control module (ECM) connector Circuit Pin Glow plug - control 20
  3. Glow plug relay connector Circuit Pin Glow plug relay - control 02 Permanent 12 volt supply 03 ECM relay controlled 12 volt supply 01 Glow plug relay - output 05
  4. Key off.
  5. Glow plug fuse connector disconnected.
  6. Key on, engine off.
  7. Measure the resistance between
  8. Glow plug relay connector Vehicle battery Glow plug - control - Pin 02 Positive post
Is the resistance greater than 10 ohms?
YES Go to step 3 . → A3
NO Go to step 2 . → 2
A2 CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE HARNESS OR THE GLOW PLUGS
  1. Glow plug assembly connector disconnected.
  2. Measure the resistance between
  3. Glow plug relay connector Vehicle battery Glow plug - control - Pin 02 Positive post
Is the resistance greater than 10 ohms?
YES Harness is OK.Suspect : - Glow plug assembly. See «Glow Plugs»(ref-311887-S14669017652009040700000) .
NO REPAIR the short circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A3 CHECK THE GLOW PLUG CIRCUIT CONTINUITY
  1. Measure the resistance between
  2. Glow plug relay connector Vehicle battery Glow plug - control - Pin 02 Negative post
Is the resistance between 0.5 ohm - 10 ohms?
YES Go to step 6 . → A6
NO Go to step 4 . → 4
A4 CHECK THE GLOW PLUG CIRCUIT FOR SHORT CIRCUIT TO GROUND
  1. Glow plug assembly connector disconnected.
  2. Measure the resistance between
  3. Glow plug relay connector Vehicle battery Glow plug - control - Pin 02 Negative post
Is the resistance greater than 10 ohms?
YES Go to step 5 . → A5
NO REPAIR the short circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A5 CHECK THE GLOW PLUG CIRCUIT(S) FOR OPEN CIRCUIT IN THE HARNESS
  1. Measure the resistance between
  2. Glow plug relay connector Glow plug relay connector Glow plug - control - 15S-RD15 - Pin 01 Glow plug - control - Pin 02
Is the resistance less than 10 ohms?
YES Suspect: - Glow plug assembly See «Glow Plugs»(ref-311887-S14669017652009040700000) . - Glow plug assembly GROUND
NO REPAIR the open circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A6 CHECK THE GLOW PLUG CONTROL LINE 'ON' STATE
  1. Scan tool connected.
  2. Access and control the PID.
  3. Activate the glow plugs.
  4. Measure the voltage between
  5. Glow plug relay connector Vehicle battery Glow plug relay - output - Pin 01 Negative post
Is the voltage between 9 volts - 15 volts?
YES Go to step 12 . → A12
NO Go to step 7 . → 7
A7 CHECK THE GLOW PLUG CONTROL LINE FOR SHORT CIRCUIT TO GROUND
  1. Key off.
  2. Glow plug relay connector disconnected.
  3. Key on, engine off.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - output - Pin 01 Negative post
Is the resistance greater than 10 ohms?
YES Go to step 8 . → A8
NO INSTALL a new front power distribution box assembly.
A8 CHECK THE GLOW PLUG CONTROL LINE FOR CONTINUITY
  1. Measure the resistance between
  2. Glow plug relay connector Glow plug relay connector Glow plug relay - output - Pin 01 Glow plug relay - output - Pin 05
Is the resistance less than 10 ohms?
YES Go to step 9 . → A9
NO REPAIR the open circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A9 CHECK SUPPLIES TO THE GLOW PLUG RELAY
  1. Measure the voltage between
  2. Glow plug relay connector Vehicle battery ECM relay controlled 12 volt supply - Pin 01 Negative post Permanent 12 volt supply - Pin 03 Negative post
Are the voltages between 9 volts - 15 volts?
YES Go to step 10 . → A10
NO No supply to the glow plug relay circuit. Check and repair the circuit as necessary.
A10 CHECK THE ECM CONTROL LINE 'ON' STATE
  1. Scan tool connected.
  2. Access and control the glow plug control PID.
  3. Activate the glow plugs.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Negative post
Is the resistance less than 10 ohms?
YES Suspect: - Glow plug relay connector - Glow plug relay fault
NO Go to step 11 . → 11
A11 CHECK THE ECM CONTROL LINE FOR SHORT CIRCUIT TO POWER
  1. Measure the resistance between
  2. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Positive post
Is the resistance greater than 10 ohms?
YES Go to step 17 . → A17
NO Go to step 16 . → 16
A12 CHECK THE GLOW PLUG CONTROL LINE 'OFF' STATE
  1. Scan tool connected.
  2. Access and control the glow plug control PID.
  3. De-activate the glow plugs.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - output - Pin 01 Positive post
Is the resistance greater than 10 ohms?
YES An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other physical damage to the harness. If no fault is found in the circuit, suspect the following component(s): - Glow plug fuse connector - Glow plug fuse fault
NO Go to step 13 . → 13
A13 CHECK THE GLOW PLUG CIRCUIT FOR SHORT CIRCUIT TO POWER IN THE HARNESS
  1. Key off.
  2. Glow plug relay connector disconnected.
  3. Key on, engine off.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - output - Pin 01 Positive post
Is the resistance greater than 10 ohms?
YES Go to step 14 . → A14
NO INSTALL a new front power distribution box assembly.
A14 CHECK THE ECM CONTROL LINE FOR A SHORT CIRCUIT TO GROUND
  1. Measure the resistance between
  2. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Negative post
Is the resistance greater than 10 ohms?
YES Suspect : - Glow plug relay fault
NO Go to step 15 . → 15
A15 CHECK WHETHER THE SHORT CIRCUIT TO GROUND IS IN THE ECM HARNESS OR ECU
  1. Key off.
  2. ECM connector disconnected.
  3. Key on, engine off.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Negative post
Is the resistance greater than 10 ohms?
YES Harness is OK.Suspect : - ECM fault
NO REPAIR the short circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A16 CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE ECM HARNESS OR ECU
  1. Key off.
  2. ECM connector disconnected.
  3. Key on, engine off.
  4. Measure the resistance between
  5. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Positive post
Is the resistance greater than 10 ohms?
YES Harness is OK.Suspect : - ECM fault
NO REPAIR the short circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.
A17 CHECK THE ECM CONTROL LINE FOR CONTINUITY
  1. Key off.
  2. ECM connector disconnected.
  3. Measure the resistance between
  4. Glow plug relay connector Vehicle battery Glow plug relay - control - Pin 02 Glow plug - control - Pin 20
Is the resistance less than 10 ohms?
YES Suspect : - ECM connector fault - ECM fault
NO REPAIR the open circuit. For additional information, refer to appropriate SYSTEM WIRING DIAGRAMS.

Scheme 8

Scheme 8: Removal
Scheme 8: Removal

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10
  1. Disconnect the battery ground cable. Refer to «Battery Disconnect»(ref-311867-S05805567962009040700000) article.
  2. Detach the glow plug wire electrical connector.
  3. Remove the intake manifold. Refer to «Intake Manifold»(ref-311883-S00399990192009040700000) article.
  4. Remove the glow plug wire retaining nuts.
  5. Remove the glow plug wire.
  6. Remove the glow plugs.

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