Possible Causes

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

• Blown ignition coil fuse
• Ignition coil fuse circuit open or shorted
• Poor electrical connection in ignition coil fuse circuit
• Faulty Engine Control Module (ECM)

Description

The ignition system uses an individual ignition coil for each cylinder. The Engine Control Module (ECM) monitors the ignition voltage from the fuse to individual coils. The Diagnostic Trouble Code (DTC) will be set if the ECM detects less than 2.5 V on the ignition coil supply voltage 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

• Illuminated engine light (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 cooling fan 1
• Cooling fan 1 harness is open or shorted
• Poor electrical connection in cooling fan 1 circuit

Description

The control modules connected to the serial data circuits monitor communication during normal vehicle operation. Operating information and commands are exchanged between control modules. Each module in the serial data circuit maintains a transmission error counter and a reception error counter. The counter values increase with detected errors and decrease with error-free messages. The diagnostic trouble code (DTC) is set when the counter for cooling fan 1 status signals is incorrect.

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 Cooling Fan 2
• Cooling Fan 2 Circuit Open or Shorted
• Poor Electrical Connection in Cooling Fan 2 Circuit

Description

Control modules connected to serial data circuits monitor communication during normal vehicle operation. Operating information and commands are exchanged between control modules. Each module in the serial data circuit maintains a transmission error counter and a reception error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) is set when the message counter for Cooling Fan 2 status signals is incorrect.

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

• Illuminated Malfunction Indicator Lamp (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 Cooling Fan 3
• Cooling Fan 3 harness is open or shorted
• Poor electrical connection in the Cooling Fan 3 circuit

Description

The control modules connected to the serial data circuits monitor communication during normal vehicle operation. Operating information and commands are exchanged between the control modules. Each module in the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) is set when the Cooling Fan 3 status signal message counter is incorrect.

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

• Illuminated MIL (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 cooling fan 4
• Cooling fan 4 harness is open or shorted
• Poor electrical connection in cooling fan 4 circuit

Description

The control modules connected to the serial data circuits monitor communication during normal vehicle operation. Operating information and commands are exchanged between the control modules. Each module in the serial data circuit maintains a transmission error counter and a reception error counter. The counter values increase with detected errors and decrease with error-free messages. The diagnostic trouble code (DTC) is set when the counter for cooling fan 4 status signal messages is incorrect.

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

• Illuminated engine warning light (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 ignition coil
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Ignition control circuit group 2 is the generic description for code P1360, 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 P1360.

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 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 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 according to the firing order.
The calculation of engine misfires/roughness 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 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 a 120° crankshaft angle range 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 to open-loop lambda operation. 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 2 is the generic description for Buick code P1360, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we do not have additional information about Buick OBDII code P1360.

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 2

Possible Symptoms

• Engine light on (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 ignition coil
• Ignition coil harness is open or shorted
• Poor electrical connection in ignition coil circuit

Description

Ignition control circuit group 2 is the generic description for Cadillac code P1360, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about Cadillac OBDII code P1360.

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 2

Possible Symptoms

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