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2004 isuzu npr diesel. I have problem with the automatic…

Customer Question
2004 isuzu npr diesel. I have...
2004 isuzu npr diesel.
I have problem with the automatic transmission : AW450-43LE.
ELECTRONICALLY TCM, SOLENOID, SENSORS IS NEW. IN D POSITION S1 SOLENOID ON, S2 OFF THE TRUCK DON'T HAVE POWER, PRESSURE LINE IDLE 90 PSI, 1500 RPM 140 PSI BUT IF I SELECT POSITION # 1 THE PRESSURE 120 PSI AND THE TRUCK HAVE NORMAL POWER
Submitted: 7 months ago.Category: Medium and Heavy Trucks
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Answered in 49 minutes by:
12/12/2017
Technician: Daniel Wilson,
 replied 7 months ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,791
Experience: Owner at DJ Wilson
Verified

Hi my name is***** will be glad to help. What fault codes are logged in the ECM and TCM memory? We can follow up as needed.

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Customer reply replied 7 months ago
That truck is Japanese version, don't have the OBDII connector. I install new tcm, 5 new solenoid, I check the wire one by one sure don't open circuit. Line Pressure test good but when I select "D" I hear a sound, like a leak pressure fluid
Customer reply replied 7 months ago
How I can get the code in this truck without OBDII?
Technician: Daniel Wilson,
 replied 7 months ago

Checking Codes

Locate the group of diagnostic connectors under the left side of the dash near the drivers kick panel. Using a suitable jumper connect diagnostic connector I-14 (blue/yellow wire) and 1-15 (black wire) together (See Figure 4). Flashes of the “ATM” warning light will display any trouble codes present (See Figure 5). The codes will appear as groups of short flashes. For example a code 31would look like this: Flash-flash-flash pause flash = 31. Each code will be displayed three times. If no faults are present code 1will flash repeatedly.

Clearing Codes

1. Turn the ignition switch on but do not start the engine.2. Connect diagnostic connectors 1-14 and 1-15 together.3. Place the shift lever in the PARK position.4. Depress the brake pedal fully.5. Depress the accelerator pedal fully.6. When the memory is cleared the “ATM” warning indictor will flash rapidly for 10 seconds.7. If the memory is not cleared repeat procedure as necessary.

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Technician: Daniel Wilson,
 replied 7 months ago

Above is for 99 models. Try this on yours.

Isuzu NPR, GMC Tiltmaster 2000-2003
Checking Codes
Locate the 16 pin OBD II type Data Link Connector (DLC) under the left side of the dash near the
brake master cylinder. Connect a suitable jumper wire between terminal 11 and terminal 4 or 5 of
the DLC (See Figure 2). Flashes of the “CHECK TRANS” light will display any trouble codes
present (See Figure 3). The codes will appear as groups of short flashes. For example a code 31
would look like this: Flash-flash-flash pause flash = 31. Each code will be displayed three times. If
no faults are present code 1will flash repeatedly.
Clearing Codes
1. Turn the ignition switch on but do not start the engine.
2. Connect a suitable jumper wire between terminal 11 and terminal 4 or 5 of the DLC.
3. Shift the transmission to the NEUTRAL position.
4. Depress the brake pedal fully.
5. Depress the accelerator pedal fully.
4. If memory is clear the “CHECK TRANS” light will flash rapidly for 10 seconds.

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Technician: Daniel Wilson,
 replied 6 months ago

Hi, Did you get this resolved? I was waiting for a response from you on the codes and if you wanted the manual as well. Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.

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