Proheat M80 Manuel de service télécharger pdf (Page 65)

3. Analog temperature sensor open.

4. Digital temperature sensor not communicating with the G-II PCM.

Troubleshoot the Dual Mode Temperature Sensor Diagnostic Code based on

oolant flow first:

Coolant Flow Go to page 4-24, Steps 1 & 2.

If the Coolant flow is correct and the Temp Sensor/Coolant Flow code is still

indicated the Dual Mode Temperature Sensor, the wiring or the G-II PCM is

faulty. Inspect the G-II PCM connector for damage and corrosion. Inspect the

Dual Mode Temperature sensor harness and connector for damage and

corrosion. If no damage or corrosion is found.

Go to Dual Mode Temperature Sensor

replacement, on this page.

Figure 4-29: Temperature Sensor.

DUAL MODE TEMP

SENSOR

Temperature Sensor replacement:

a) Isolate the coolant system at the PROHEAT inlet and outlet ports for

minimal coolant loss using valves in the system or hose clamps.

b) Remove main sensor mount using a 1" wrench.

c) Reinstall the new sensor. Ensure that the O-ring and

O-ring seat are clean. Install the sensor until

it bottoms out on the

mounting boss.

If after changing the Temperature Sensor a diagnostic code is still indicated,

the G-II PCM is faulty. Go to G-II PCM replacement, page 4-38.

WARNING

NEVER remove coolant lines when

the engine/system is HOT – escaping

steam or scalding water could cause

serious personal injury. Loosen the

coolant line clamps slowly, allowing

the pressure to escape before

removing completely.

NOTICE

All plugs/harnesses must be rein-

stalled into the G-II Proheat Control

Module (G-II PCM) before heater

goes back into service.

Figure 4-30: Temperature Sensor.

DUAL MODE TEMP

SENSOR

INLET

OUTLET

4-28

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 89 90

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Proheat M80 Manuel de service Page 65

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