Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Ignition/Vehicle - Off
- Disconnect the appropriate electrical connector : X160orX161
- Ignition - On / Vehicle - In Service Mode
- Verify the scan tool parameter :
X160
- Cylinder 1 Injector Control Circuit Status = OK
- Cylinder 3 Injector Control Circuit Status = OK
- Cylinder 5 Injector Control Circuit Status = OK
X161
- Cylinder 2 Injector Control Circuit Status = OK
- Cylinder 4 Injector Control Circuit Status = OK
- Cylinder 6 Injector Control Circuit Status = OK
- If not the specified state
- Ignition/Vehicle - Off
- Disconnect the electrical connector : X3 @ K20 Engine Control Module
- Test for infinite resistance between the test points :
- { Q17A Fuel Injector 1 } Terminal 72 & Terminal 52 @ Control module harness
- { Q17B Fuel Injector 2 } Terminal 71 & Terminal 51 @ Control module harness
- { Q17C Fuel Injector 3 } Terminal 67 & Terminal 47 @ Control module harness
- { Q17D Fuel Injector 4 } Terminal 66 & Terminal 46 @ Control module harness
- { Q17E Fuel Injector 5 } Terminal 70 & Terminal 50 @ Control module harness
- { Q17F Fuel Injector 6 } Terminal 68 & Terminal 48 @ Control module harness
- If less than infinite resistance - Repair the short between the circuits.
- If infinite resistance - Replace the component : K20 Engine Control Module
- Go to next step : If the specified state
- Ignition/Vehicle - Off
- Disconnect the appropriate electrical connector : Q17 Fuel Injector
- Test for infinite resistance between the test points : Q17 Fuel Injector Terminal 1 & Terminal 2 @ Component harness
- If less than infinite resistance
Repair the short between the circuits : High Control & Low Control
- If infinite resistance
Test or replace the component : Q17 Fuel Injector
- If less than infinite resistance