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Old 06-01-2014, 01:09 PM   #1
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Default [VIDEO] Checking Error Codes

I made this quick video yesterday to show how to check the error codes on a Nissan D21 Hardbody with the newer ECU (not the ODBII ECU):



That should help to explain this diagram:



If anyone has a video how to check the older ECUs, please share it here.

This video was from Deerhurst:



Once you have your codes written down, click over to our the sticky on what these codes mean:

ECU / Check engine light - Diagnostic Codes

...and if you don't have a Service Manual for your truck, then stop wasting time! These are free while this website is up and running:

www.nicoclub.com/FSM/Hardbody



A Word About the Service Manuals:

You'll want to download the manual that is closest to your year of truck without going over. So, if you have a 1986.5, you would want to download the d21_truck_1989.pdf file.

In general, a newer year Service Manual will have more details than a manual written earlier. So, the 1997 Service Manual information on the door windows should have updated information than the 1990 Service Manual. However, manuals that cover port injection will not benefit someone trying to troubleshoot a throttle body. Some manuals will show you how to rebuilt parts (starters or brakes), while newer ones show how to remove and replace.

Links to TroubleCodes.net
RedAggie03 did a trouble code post:

ECU / Check engine light - Diagnostic Codes

I'm copying that data to this, for 1 Stop Shopping:
KA24E Codes:
11 Crankshaft Position Sensor Circuit
12 Mass Air Flow Sensor Circuit
13 Engine Coolant Temperature Sensor Circuit
14 Vehicle Speed Sensor Circuit
21 Ignition Signal Missing in Primary Coil
31 Engine Control Unit (ECU)
33 Oxygen Sensor Circuit
41 Air Temperature Sensor Circuit
43 Throttle Position Sensor Circuit
55 No Malfunctions

Complete list of Codes for other models:
11 Crank Angle Sensor/Camshaft Position Sensor
12 Air Flow Meter/Mass Air Flow Sensor
13 Engine Coolant Temperature Sensor
14 Vehicle Speed Sensor
21 Ignition Signal
22 Fuel Pump
23 Idle Switch
24 Throttle Valve Switch
25 Idle Speed Control Valve
28 Cooling Fan Circuit
31 ECU
32 EGR Function
33 Heated Oxygen Sensor
34 Knock Sensor
35 Exhaust Gas Temperature Sensor
36 EGR Control-Back Pressure Transducer
37 Knock Sensor
38 Right hand bank Closed Loop (B2)
41 Intake Air Temperature Sensor
42 Fuel Temperature Sensor
43 Throttle Position Sensor
45 Injector Leak
47 Crankshaft Position Sensor
51 Injector Circuit
53 Oxygen Sensor
54 A/T Control
55 No Malfunction
63 No. 6 Cylinder Misfire
64 No. 5 Cylinder Misfire
65 No. 4 Cylinder Misfire
66 No. 3 Cylinder Misfire
67 No. 2 Cylinder Misfire
68 No. 1 Cylinder Misfire
71 Random Misfire
72 TWC Function right hand bank
73 TWC Function right hand bank
76 Fuel Injection System Function right hand bank
77 Rear Heated Oxygen Sensor Circuit
82 Crankshaft Position Sensor
84 A/T Diagnosis Communication Line
85 VTC Solenoid Valve Circuit
86 Fuel Injection System Function right hand bank
87 Canister Control Solenoid Valve Circuit
91 Front Heated Oxygen Sensor Heater Circuit right hand bank
94 TCC Solenoid Valve
95 Crankshaft Position Sensor
98 Engine Coolant Temperature Sensor
101 Front Heated Oxygen Sensor Heater Circuit right hand bank
103 Park/Neutral Position Switch Circuit
105 EGR and EGR Canister Control Solenoid Valve Circuit
108 Canister Purge Control Valve Circuit
The following data was provided on 27 Jan 2016 from Deerhurst for the pre-1988 model trucks:
Quote:
Originally Posted by Deerhurst View Post
Here goes, a XLXS file for 86-89 z24i and VG30i. 3 tabs at the bottom for engine/year variation.

https://drive.google.com/file/d/0B2Y...ew?usp=sharing

Info from my Chiltons for 1970-88 pickup and Pathy.
Here is a screenshot summary of that data:



Updated 2016 May 06: Contribution from Reserector in another thread

Quote:
Originally Posted by Reserector View Post
Since yours in a 1987, scroll down to the bottom of that post. Yours does not have a place for a screwdriver. It only has a toggle switch that selects between running data and stored data.

Expose the ECU, set the brake, shift into neutral' and turn the key to "ON" without starting it. You should see the LEDs flashing in sequence. If not, flip the switch the other way.

Now, fully press and release the gas pedal one time.
Press the clutch and shift into first. Release the clutch.
Press the clutch and shift back into neutral. Release the clutch.

The only code you should see is 44. Four long blinks followed by four short blinks.

...
[This technique] clears two codes that will otherwise persist. 24 Neutral switch, and (if memory serves) 42 TPS.
Here is a good page of tutorials that Tony provided:

Quote:
Originally Posted by ahardb0dy View Post
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Walk-through: Checking Nissan Trouble Codes
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Last edited by jp2code; 09-20-2016 at 05:32 PM.
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Old 06-01-2014, 07:11 PM   #2
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sounds like you were in a hailstorm lol
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Old 06-01-2014, 08:29 PM   #3
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Dude in that video sounds a little bit like like a hick, too. What's up with that? I thought it was Mater from Cars there for a second.

I got a decent ways into that video when the rain started, and I was like, "Really? Right now?" I didn't have a way to make a stored code pop back up again, or I would have re-recorded it.

That's my little tin roof over the shed I built for it (old pic):

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Old 06-01-2014, 09:06 PM   #4
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i'd give anything for a garage or a carport.
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Old 09-24-2014, 09:57 PM   #5
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Great info, thanks for passing it along!!!!
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Old 09-25-2014, 12:05 AM   #6
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Quote:
Originally Posted by jp2code View Post
Dude in that video sounds a little bit like like a hick, too. What's up with that? I thought it was Mater from Cars there for a second.
You taking about me? I'll have to do another and better video. I know I sounded pretty hillbilly in my header video. Funny thing is, I'm from California and now live in Oregon!
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Old 10-03-2014, 10:11 PM   #7
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Thanks for this!
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Old 10-04-2014, 02:00 AM   #8
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my ECM is the pathfinder version. it has the grey plastic cover that protects the toggle switch.

it also has the window like deerhurts. when its powered on, it flashes 1, 2, 3, 4 then 5 and starts over. you have to wait until it flashes three, then flip the switch before it starts to flash 4 times. then it will start throwing codes via the red and green lights.
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Old 01-16-2015, 04:58 AM   #9
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Quote:
Originally Posted by jp2code View Post
Dude in that video sounds a little bit like like a hick, too. What's up with that? I thought it was Mater from Cars there for a second.

I got a decent ways into that video when the rain started, and I was like, "Really? Right now?" I didn't have a way to make a stored code pop back up again, or I would have re-recorded it.

That's my little tin roof over the shed I built for it (old pic):

Couldn't tell it was old. I mean it's not like you put Titan wheels on it or anything.
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Old 01-22-2015, 03:29 AM   #10
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How do you know which one you have? ~newer or older~?
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