Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 58 (INSTRUMENT PANEL SYSTEM DISPLAYS AND GAUGES)DIAGNOSTIC INFORMATION AND PROCEDURESDRIVER INFORMATION CENTER SWITCH MALFUNCTIONCIRCUIT/SYSTEM TESTING

2019 Chevrolet Trax Premier, AWD

Circuit/System Testing

2019 Chevrolet Trax Premier, AWDSECTION Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Circuit/System Verification must be performed before proceeding with Circuit/System Testing.

Menu Switch Malfunction

Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the S78 Turn Signal/Multifunction Switch, ignition ON.
Test for 4.8 - 5.2 V between the signal circuit terminal 5 and ground.
- If less than 4.8 V
1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
2. 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
3. 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 P16 Instrument Cluster.
- If greater than 5.2 V
1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
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.
  - If less than 1 V, replace the P16 Instrument Cluster.
- Go to next step: If between 4.8 - 5.2 V
Test for less than 10 Ω between the ground circuit terminal 3 and ground.
- If 10 Ω or greater
  Repair the open/high resistance in the circuit
- Go to next step: If less than 10 Ω
Test or replace the S78 Turn Signal/Multifunction Switch.

Set, Up and Down Switch Malfunction

Ignition OFF and all vehicle systems OFF, disconnect the X1 harness connector at the S78 Turn Signal/Multifunction Switch, ignition ON.
Test for less than 10 Ω between the low reference circuit terminal 6 and ground.
- If 10 Ω or greater
1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
2. Test for less than 2 Ω in the low reference circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the P16 Instrument Cluster.
- Go to next step: If less than 10 Ω
Test for 9.8 - 12.2 V between the signal circuit terminal 12 and ground.
- If less than 9.8 V
1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
2. 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
3. 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 P16 Instrument Cluster.
- If greater than 12.2 V
1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
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.
  - If less than 1 V, replace the P16 Instrument Cluster.
- Go to next step: If between 9.8 - 12.2 V
Test or replace the S78 Turn Signal/Multifunction Switch.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.