Circuit/System Testing

Ignition ON/Vehicle in Service Mode.
Verify the tachometer moves from the minimum to the maximum position and back to the minimum position when performing the Instrument Cluster Gauge Sweep Test with the scan tool.
- If tachometer does not sweep
  Replace the P16 Instrument Cluster.
- Go to next step: If speedometer sweeps properly

NOTE:

Diagnose any Engine Control Module DTCs before proceeding with this diagnostic.

Engine Running.
Verify the scan tool parameters listed below do not display Malfunction:
- Camshaft Position Signal Output Circuit Low Voltage Test Status
- Camshaft Position Signal Output Circuit Open Test Status
- Camshaft Position Signal Output Circuit High Voltage Test Status
- If Malfunction is not displayed
  Replace the P16 Instrument Cluster.
- Go to next step: If Malfunction is displayed
Ignition OFF, disconnect the X1 harness connector at the P16 Instrument Cluster, engine Running.
Test for 15 - 30 Hz DC between the signal circuit terminal 22 and ground.
- If not between 15 - 30 Hz DC
1. Ignition OFF, disconnect the harness connector at the K20 Engine Control Module.
2. Test for less than 1 V between the signal circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - Go to next step: If less than 1 V
3. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - Go to next step: If infinite resistance.
4. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K20 Engine Control Module.
- Go to next step: If between 15 - 30 Hz DC
Replace the P16 Instrument Cluster.