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Home >> Chevrolet >> 2016 >> City Express LS >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> Charge Indicator Malfunction >> Circuit/System Testing

Circuit/System Testing

NOTE:

You must perform the Circuit/System Verification  before proceeding with Circuit/System Testing.

  1. Ignition OFF, disconnect the X1 harness connector at the G13 Generator.
  2. Verify the charge warning lamp does not turn ON when ignition ON.
    • If the charge warning lamp illuminates 
    1. Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the P16 Instrument Cluster.
    • Go to next step: If the charge warning lamp does not illuminate 
  3. Install a 3 A fused jumper wire between the control circuit terminal 1 and ground.
  4. Verify the charge warning lamp turns ON when ignition ON.
    • If the charge warning lamp does not illuminate 
    1. Ignition OFF, remove the jumper wire and disconnect the harness connector at the P16 Instrument Cluster, ignition ON.
    2. Test for less than 1 V between the control 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. Ignition OFF.
    4. Test for less than 2 Ω in the control circuit end to end.
      • If 2 Ω or greater, repair open/high resistance in the circuit.
      • If less than 2 Ω, replace the P16 Instrument Cluster.
    • Go to next step: If the charge warning lamp illuminates 
  5. Replace the G13 Generator