Possible Causes

NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.

• Faulty ignition control module
• Ignition control module harness is open or shorted
• Poor electrical connection in ignition control module circuit

Description

The ignition control module (ICM) has independent power and ground circuits.

The circuits between the ICM and powertrain control module (PCM) consist of the following circuits:

– Ignition control (IC) timing signal

– IC timing control

– Low resolution engine speed signal

– Medium resolution engine signal

– Camshaft position signal

– Low reference

The ICM sends 3X signals to the PCM and controls ignition timing during engine starting.

Timing advance switches to PCM control after the following actions occur:

The PCM receives the second 3X signal. The PCM applies 5 volts to the ignition control (IC) timing signal circuit.

The ICM monitors the CKP timing signal when the engine starts. The CKP timing signal is transmitted from the CKP sensor to the ICM on the CKP sensor signal 2 circuit.

The CKP timing signal is used to determine the correct cylinder pair and initiate the ignition coil firing sequence.

The 18X reference pulses are transmitted from the CKP sensor to the ICM on the CKP sensor 1 circuit.

The 18X reference pulses are used for fuel injection and ignition control.

Once the ICM has received both signals, it transmits the 18X and 3X reference signals to the PCM.

The CMP and CKP sensors share a 12-volt reference circuit and a low reference circuit.

The CKP sensor consists of the following circuits:

– 12-volt reference

– Low reference

– CKP sensor signal 1

– CKP sensor signal 2

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Malfunction Indicator Lamp illuminated (or Service Engine Soon warning light illuminated)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.

• Faulty cylinder 2 ignition coil
• Cylinder 2 ignition coil harness is open or shorted
• Poor electrical connection in cylinder 2 ignition coil circuit
• Faulty Engine Control Module (ECM)

Description

The Engine Control Module (ECM) must determine if a misfire is occurring and identify the specific cylinder(s) and severity of the misfire event, and whether it is relevant for emissions or damaging to the catalyst. To accomplish these tasks, the control module monitors the crankshaft for acceleration losses during the firing segments of each cylinder based on the firing order.
The misfire/engine roughness calculation is derived from differences in period duration (T) of individual increment gear segments. Each segment period consists of an angular range of 120° of crankshaft angle starting 78° before Top Dead Center (TDC).
If the expected period duration exceeds the allowed value, a misfire fault for that particular cylinder is recorded in the ECM’s fault memory. Depending on the measured misfire rate level, the control unit illuminates the “Service Engine Soon” light, may cut fuel to the particular cylinder, and may switch lambda operation to open loop. All misfire faults are weighted to determine whether the misfire is relevant for emissions or damaging to the catalyst.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light On)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

• Faulty crankshaft position sensor
• Crankshaft position sensor harness is open or shorted
• Poor electrical connection in crankshaft position sensor circuit

Description

The engine control module (ECM) monitors the crankshaft position/top dead center sensor. The engine control module sets the diagnostic trouble code (DTC) when a malfunction in the crankshaft position sensor (CKP)/top dead center (TDC) circuit is detected.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Check engine light illuminated (or service engine soon warning light illuminated)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

• Faulty crankshaft position sensor
• Crankshaft position sensor harness is open or shorted
• Poor electrical connection in crankshaft position sensor circuit

Description

The engine control module (ECM) monitors the crankshaft position/top dead center sensor. The engine control module sets the diagnostic trouble code (DTC) when a malfunction in the crankshaft position sensor (CKP)/top dead center (TDC) circuit is detected.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine light on (or service engine soon warning light on)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

• Faulty crankshaft position sensor
• Crankshaft position sensor harness is open or shorted
• Poor electrical connection in crankshaft position sensor circuit

Description

The engine control module (ECM) monitors the crankshaft position/top dead center sensor. The diagnostic trouble code (DTC) is set when the ECM detects a malfunction in the crankshaft position sensor (CKP)/top dead center (TDC) circuit.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine light on (or service engine soon warning light on)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

• Faulty cylinder 2 ignition coil
• Cylinder 2 ignition coil harness is open or shorted
• Poor electrical connection in cylinder 2 ignition coil circuit
• Faulty Engine Control Module (ECM)

Description

The Engine Control Module (ECM) must determine if a misfire is occurring and identify the specific cylinder(s) and severity of the misfire event and whether it is relevant for emissions or damaging to the catalyst. To accomplish these tasks, the control module monitors the crankshaft for acceleration losses during the firing segments of each cylinder based on the firing order.
The misfire/engine roughness calculation is derived from the differences in period duration (T) of individual increment gear segments. Each segment period consists of a 120° angular range of crankshaft angle that begins 78° before Top Dead Center (TDC).
If the expected period duration is greater than the allowed value, a misfire fault for the particular cylinder is recorded in the ECM fault memory. Depending on the measured misfire rate level, the control unit illuminates the “Service Engine Soon” light, may cut fuel to the particular cylinder, and may switch lambda operation to open loop. All misfire faults are weighted to determine whether the misfire is relevant for emissions or damaging to the catalyst.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.

• Faulty spark plug
• Faulty ignition coil
• Intake vacuum leak
• Faulty camshaft position sensor
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Under CARB/OBD regulations, the Engine Control Module (ECM) must determine if a misfire is occurring and also identify the specific cylinder(s) and severity of the misfire event, and whether it is emissions-relevant or damaging to the catalyst. To accomplish these tasks, the control module monitors the crankshaft for acceleration losses during the firing segments of each cylinder based on the firing order.
The misfire/engine roughness calculation is derived from the differences in period duration (T) of individual increment gear segments. Each segment period consists of an angular range of 120° of crankshaft angle that begins 78° before Top Dead Center (TDC).
If the expected period duration exceeds the allowed value, a misfire fault for that particular cylinder is recorded in the ECM’s fault memory. Depending on the measured misfire rate level, the control unit illuminates the Service Engine Soon light, may cut fuel to the particular cylinder, and may switch lambda operation to open loop. All misfire faults are weighted to determine whether the misfire is emissions-relevant or damaging to the catalyst.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light On)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.

• Faulty ignition coil
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Ignition Control Circuit Group 1 is the generic description for code P1359 Buick, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we do not have additional information about OBDII code P1359 Buick.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Detected

During the Engine Control Module (ECM) power-up mode, the ECM detected an open or short circuit condition in coil group 1

Possible Symptoms

• Engine Light On (or Service Engine Soon Warning Light)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.

• Faulty ignition coil
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Ignition Control Circuit Group 1 is the generic description for code P1359 Cadillac, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we do not have additional information about OBDII code P1359 Cadillac.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Detected

During the Engine Control Module (ECM) power-up mode, the ECM detected an open or short circuit condition in coil group 1

Possible Symptoms

• Engine light on (or service engine soon warning light on)

Possible Causes

NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.

• Faulty ignition coil
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Ignition Control Circuit Group 1 is the generic description for code P1359 Chevrolet, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about OBDII code P1359 Chevrolet.

How to Repair

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Detected

During the Engine Control Module (ECM) power-up mode, the ECM detected an open or short circuit condition in coil group 1

Possible Symptoms

• Engine light on (or service engine soon warning light on)