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Diagnostic Procedure

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DTC P2B58-00: (PCM, VIN M) DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 RECORD FREEZE FRAME DATA/SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION
NOTE:
  • Recording can be facilitated using the screen capture function of the PC.
  • Record the FREEZE FRAME DATA/snapshot data on the repair order.
 - Go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the coolant control valve/coolant control valve position sensor connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the connector and/or terminals, then go to Step 10.
No Go to the next step.
4 INSPECT PCM CONNECTOR CONDITION
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the connector and/or terminals, then go to Step 10.
No Go to the next step.
5 INSPECT COOLANT CONTROL VALVE CIRCUIT FOR SHORT TO GROUND
  • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side) and body ground:
    • Coolant control valve/coolant control valve position sensor terminal A
      • Coolant control valve/coolant control valve position sensor terminal B
  • Is there continuity?
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Coolant control valve/coolant control valve position sensor terminal A-PCM terminal 1CW
  • Coolant control valve/coolant control valve position sensor terminal B-PCM terminal 1CX

If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 10.
No Go to the next step.
6 INSPECT COOLANT CONTROL VALVE CIRCUIT FOR OPEN CIRCUIT
  • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • Coolant control valve/coolant control valve position sensor terminal A-PCM terminal 1CW
      • Coolant control valve/coolant control valve position sensor terminal B-PCM terminal 1CX
  • Is there continuity?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Coolant control valve/coolant control valve position sensor terminal A-PCM terminal 1CW
  • Coolant control valve/coolant control valve position sensor terminal B-PCM terminal 1CX

If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has an open circuit.

Go to Step 10.
7 INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUITS FOR SHORT TO EACH OTHER
  • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected.
  • Inspect for continuity between coolant control valve/coolant control valve position sensor terminals A and B (wiring harness-side).
  • Is there continuity?
 Yes Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Coolant control valve/coolant control valve position sensor terminal A-PCM terminal 1CW
  • Coolant control valve/coolant control valve position sensor terminal B-PCM terminal 1CX

If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to each other.

Go to Step 10.
No Go to the next step.
8 INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY
  • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected.
  • Switch the ignition ON (engine off).
    NOTE:
    • Another DTC may be stored by the PCM detecting an open circuit.
  • Measure the voltage at the following terminals (wiring harness-side):
    • Coolant control valve/coolant control valve position sensor terminal A
      • Coolant control valve/coolant control valve position sensor terminal B
  • Is the voltage 0 V?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Coolant control valve/coolant control valve position sensor terminal A-PCM terminal 1CW
  • Coolant control valve/coolant control valve position sensor terminal B-PCM terminal 1CX

If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to power supply.

Go to Step 10.
9 INSPECT COOLANT CONTROL VALVE Yes Replace the coolant control valve, then go to the next step.
(See COOLANT CONTROL VALVE REMOVAL/INSTALLATION [VIN M] ).
No Go to the next step.
10 VERIFY DTC TROUBLESHOOTING COMPLETED
  • Always reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC ).
  • Perform the KOER self test. (See KOEO/KOER SELF TEST ).
  • Is the same Pending DTC present?
 Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
11 VERIFY AFTER REPAIR PROCEDURE Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No DTC troubleshooting completed.
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