Proheat M80 Manuel de service télécharger pdf (Page 68)

4-31

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

COOLANT PUMP Diagnostic Code 11

Indicates an over-load fault is detected. (Pump is drawing more than 10 amps.)

Troubleshoot the Coolant Pump diagnostic code based on:

oolant Pump and G-II PCM – electrical.

Test Procedure – Coolant Pump and G-II PCM test:

a) Disconnect the Coolant Pump at the G-II PCM.

b) Switch the PROHEAT on and observe for a diagnostic code.

If a Coolant Pump diagnostic code is NOT indicated and the PROHEAT

operates, the Coolant Pump is faulty. Go to Coolant Pump replacement.

If the Coolant Pump diagnostic code is still indicated, the G-II PCM is faulty.

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

Coolant Pump replacement:

a) Isolate the Coolant Pump using shut-off valves provided in the coolant

system or hose to minimize coolant loss.

b) Remove Coolant Pump.

c) Install new Coolant Pump.

4.1.12

(11 Flashes)

Figure 4-33: G-II PCM Coolant Pump Connection.

G-II PCM COOLANT PUMP

CONNECTION

CAUTION

DO NOT run a coolant pump dry.

Before starting the PROHEAT ensure

that the Coolant Pump is flooded with

coolant by opening all valves and

running the engine until the air has

been purged from the system (approx-

imately 15 – 20 minutes). This will

prevent Coolant Pump damage.

WARNING

NEVER remove coolant lines when

the engine 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.

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Proheat M80 Manuel de service Page 68

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