PCC1302 Command Engine Code 436

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This instruction show you guide on how to solve PCC1302 Command engine fault code 436 AUX 101 Intake Manifold Temperature ORR warning.

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Procedures:

Intake manifold temperature sensor voltage is out of range.

Possible Causes:
1.Faulty intake manifold temperature sensor connections
2.Faulty intake manifold temperature sensor
3.Faulty engine harness
4.Faulty extension harness
5.Verify controller calibrations

Diagnosis and Repair:
1 Faulty intake manifold temperature sensor connections
a.Inspect the intake manifold temperature sensor and the engine harness connector pins.
a.Disconnect the engine harness connector from the intake manifold temperature sensor.
b.Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c.Inspect for evidence of moisture in or on the connector.
d.Inspect for missing or damaged connector seals.
e.Inspect for dirt or debris in or on the connector pins.

2Faulty intake manifold temperature sensor
a.Check the resistance of the sensor.
a.Disconnect the engine harness connector from the intake manifold temperature sensor.
b.Measure the resistance between the intake manifold temperature sensor signal pin and the intake manifold temperature sensor return pin.

3Faulty engine harness
a.Inspect the engine harness and the connector pins.
a.Disconnect the engine harness connector from the extension harness.
b.Inspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c.Inspect for evidence of moisture in or on the connector.
d.Inspect for missing or damaged connector seals.
e.Inspect for dirt or debris in or on the connector pin.
b.Check for a short circuit from pin to pin.
a.Disconnect the engine harness connector from the extension harness.
b.Disconnect the engine harness from the intake manifold temperature sensor.
c.Disconnect the engine harness from all sensors that have a shared return with the intake manifold temperature sensor.
d.Measure the resistance from the intake manifold temperature sensor return pin on the engine harness inline connector to all other pins in the engine harness inline connector.

e.Measure the resistance from the intake manifold temperature sensor signal pin on the engine harness inline connector to all other pins in the engine harness inline connector.

f.If all measurements are greater than 100k Ohms, then the resistance is correct.
c.Check for a short circuit to engine block ground.
a.Disconnect the extension harness from the engine harness.
b.Measure the resistance from the intake manifold temperature sensor signal pin on the extension harness connector to the engine block ground.
c.If the measurement is more than 100k ohms, then the resistance is correct.
d.Check for an open circuit.
a.Disconnect the engine harness connector from the extension harness.
b.Disconnect the engine harness from the intake manifold temperature sensor.
c.Measure the resistance from the intake manifold temperature sensor return pin on the engine harness inline connector to the intake manifold temperature sensor return pin at the engine harness sensor connector.
d.Measure the resistance from the intake manifold temperature sensor signal pin on the engine harness inline connector to the intake manifold temperature sensor signal pin at then engine harness sensor connector.
e.If the measurement is less than 10 ohms, then the resistance is correct

4Faulty extension harness
a.Inspect the extension harness connector pins.
a.Disconnect the extension harness connector.
bInspect for corroded pins, bent or broken pins, pushed back or expanded pins.
c.Inspect for evidence of moisture in or on the connector.
d.Inspect for missing or damaged connector seals.
e.Inspect for dirt or debris in or on the connector pins.
b.Check for a short circuit to engine block ground.
a.Disconnect the extension harness from the engine harness.
b.Measure the resistance from the intake manifold temperature sensor signal pin on the extension harness connector to engine block ground.
c.Measure the resistance from the intake manifold temperature sensor return pin on the engine harness connector to engine block ground.
d.If all measurements are greater than 100k ohms, then the resistance is correct.
c.Check for a short circuit from pin to pin.
a.Disconnect the extension harness from the engine harness.
b.Measure the resistance from the intake manifold temperature sensor return pin on the extension harness connector to all other pins in the extension harness connector.

 

c.Measure the resistance from the intake manifold temperature sensor signal pin on the extension harness connector to all other pins in the extension harness connector.
d.If all measurements are greater than 100k ohms, then the resistance is correct.
d.Check for an open circuit.
a.Disconnect the extension harness from the engine harness.
b.Measure the resistance from the intake manifold temperature sensor return pin on the extension harness connector to the intake manifold temperature sensor return pin at the extension harness inline connector.
c.Measure the resistance from the intake manifold temperature sensor signal pin on the extension harness connector to the intake manifold temperature sensor signal pin at the extension harness inline connector.
d.If the measurement is less than 10 ohms, then the resistance is correct.

5 Verify controller calibrations
a.Using the display or the InPower Service tool, verify the calibration in the PCC.
a.If the calibration in the PCC matches the latest calibration on the InCal website,then the calibration is correct. If it does not, update the calibration to the latest.
b.Using the InSite Service tool, verify the calibration in the ECM.
a.If the calibration in the ECM matches the latest calibration on QSOL, then the calibration is correct. If it does not, update the ECM to the latest calibration.

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