Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Cold Start-Up = Required

Ignition - On / Vehicle - In Service Mode
Verify DTC P0300 - P0304 is not set.
- If DTC P0300 - P0304 is set
  Refer to: DTC P0300-P0304
- Go to next step: If DTC P0300 - P0304 is not set

NOTE:

Cold Start-Up = Required

Verify the scan tool parameter: Cold Start-Up = Yes
- If not the specified state
  Repeat the procedure starting at step 3
- Go to next step: If the specified state
Engine - Idling
Verify the scan tool parameter: Cylinder 1 - 8 Current Misfire Counter = Less than 1
- If 1 or greater
1. Ignition - On / Vehicle - In Service Mode & Engine - Off
2. Verify the following conditions do not exist:
  - Q17 Fuel Injector = Blocked / Restricted - Fuel Injector Diagnosis
  - Q17 Fuel Injector - Control Circuit = High Resistance - Refer to: DTC P0201-P0204, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P1248, P1249, P124A, P124B, P2147, P2148, P2150, P2151, P2153, P2154, P2156, or P2157
  - Battery Voltage = Less than 11 V - Cold Start-Up - Refer to: Symptoms - Engine Electrical
  - Fuel - Contaminated / Poor Quality - Refer to: Alcohol/Contaminants-in-Fuel Diagnosis
  - Fuel Pressure - Low / High - Refer to: Fuel System Diagnosis .
  - If a condition exists - Repair or replace as necessary
  - If no condition exists - Replace the appropriate component: Q17 Fuel Injector
- Go to next step: If less than 1
All OK.