LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (2 Of 3)) >> Diagnostic Information and Procedures >> DTC P0685-P0687, P0689, P0690, P1682, P16A7, P16AF, or P16B3 >> Component Testing

Component Testing

WARNING: This page is about a different variant/trim than selected.
    NOTE:

    For detailed component terminal information, refer to : Diagnostic Aids

  1. Ignition/Vehicle - Off
  2. Remove the component : KR75 Engine Controls Ignition Relay
  3. Test for 70 to 110 ohms between the test points : B+ - Relay Coil & Control - Relay Coil
    • If not between 70 and 110 ohms 

      Replace the component : KR75 Engine Controls Ignition Relay

    • Go to next step : If between 70 and 110 ohms 
  4. Test for infinite resistance between the test points :
    • B+ - Relay Switch & B+ - Relay Coil
    • B+ - Relay Switch & Control - Relay Coil
    • B+ - Relay Switch & Control - Component
    • B+ - Relay Coil & Control - Component
    • If less than infinite resistance 

      Replace the component : KR75 Engine Controls Ignition Relay

    • Go to next step : If infinite resistance 
  5. Connect a 3 A fused jumper wire between the test points : B+ - Relay Coil & B+

    Connect a jumper wire between the test points : Control - Relay Coil & Ground

  6. Test for less than 2 ohms between the test points : B+ - Relay Switch & Control - Component
    • If 2 ohms or greater 

      Replace the component : KR75 Engine Controls Ignition Relay

    • Go to next step : If less than 2 ohms 
  7. All OK.
scientia non olet · About LEMON Manuals