Proheat M80 Manuel de service télécharger pdf (Page 38)

TROUBLESHOOTING

AND REPAIR

4.0

Problems with the PROHEAT and its operation will be indicated in two ways:

PROHEAT Diagnostic Faults indicated by means of a flashing diagnostic code

on the G-II PCM and a OEM indicator light (if equipped). Go to page 4-3.

Operational problems may not be identified with a flashing diagnostic code

(e.g., blown fuse, obstructed coolant flow, air leaks in fuel supply line)

Go to page 4-39

Troubleshooting a Problem

Locate the PROHEAT, remove the enclosure lid if used and visually check for

any problems with wiring harnesses, fuel leaks, coolant leaks, exhaust pipe

damage and environmental condition.

Check the diagnostic indicator light, and if it's flashing, determine the code

based on page 4-3.

If no code is indicated, turn the PROHEAT off and then on again using the

existing operational switches, timer or a PROHEAT remote start switch

(PROHEAT P/N PK0091).

Let the PROHEAT attempt to start and/or operate. Observe the operation.

NOTE: The PROHEAT will always attempt to start twice, as long as the coolant

temperature is below 160°F (71°C). If a fault is detected it will shut down, go

through a Cool Down (Purge) and attempt a second start. After both attempts

to start or operate, an indicator light will flash a diagnostic code.

Go to page 4-3.

• If the indicator light flashes, count the number of flashes and refer to

the troubleshooting diagnostic code description for that number on the

following pages.

• If the PROHEAT runs but is not performing or operating correctly, consult

the Operational Problems section, page 4-39.

Troubleshooting and Repair Tools Required

• Test Gauge, Air Pressure Digital Manometer (PROHEAT P/N PK0036)

Allows the service technician to check the air compressor pressure to

ensure correct fuel delivery.

• Remote Start Switch (PROHEAT P/N PK0091)

Allows the service technician to work at the PROHEAT. Isolates the

PROHEAT from the existing vehicle system controls and comes with a

built-in indicator light.

• Temperature Sensor (PROHEAT P/N P/N 200304K G-II PCM)

Allows the service technician to start a PROHEAT when the coolant

temperature is greater than 160°F (71°C). To be used only for

troubleshooting.

• Test Gauge, Air/Fuel Pressure (PROHEAT P/N PK0067)

Allows the service technician to check the fuel pressure to ensure correct

fuel delivery (can also be used for air pressure measurements).

• Test Gauge Adaptor (PROHEAT P/N PK0071)

Rotary Vane Compressor Models ONLY (SN 600000 to 699999)

Allows the service technician to measure the air compressor pressure and

adjust the air relief at the same time.

STEP 1

STEP 2

STEP 3

STEP 4

4-1

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

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Proheat M80 Manuel de service Page 38

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