Possible started problem and ECU code 0302
03-13-2004, 10:47 AM
#1
Senior Member
Thread Starter
Join Date: Nov 2003
Posts: 106
Possible starter problem and ECU code 0302
Yesterday morning I went to start my car and all I heard was a click. I tried again and it started right up. Then, on the way to work the CIL came on. I ran diags on the ECU and got code 0302: EGR hi/low flow.
This mornig when I went to start, same problem, but again I was able to start. Does this mean I have a dead spot on the starter? Will I need a new one soon? About the code, can someone tell me where the EGR valve is? Not too long ago I saw a write up I believe... but didn't pay too much attention to it. This all sucks right now because I am so broke ;( Thanks to all for your help.
This mornig when I went to start, same problem, but again I was able to start. Does this mean I have a dead spot on the starter? Will I need a new one soon? About the code, can someone tell me where the EGR valve is? Not too long ago I saw a write up I believe... but didn't pay too much attention to it. This all sucks right now because I am so broke ;( Thanks to all for your help.
03-14-2004, 05:48 AM
#2
0302
Diagnostic Trouble code 0302 points to a problem with the Exhaust Gas Recirculation system. The malfunction is detected by the Engine Control Module when no EGR flow is detected under conditions which call for EGR. Possible causes include:
- The electrical harness or connectors (valve circuit open or shorted)
- The EGR valve is stuck closed
- Weak or dead battery
- The EGR passage is clogged
- Faulty EGR temperature sensor circuit
- A leak somewhere in the exhaust system
The EGR Volume Control Valve may be tested with an ohmmeter. Disconnect the electrical connector. Looking at the connector half which is attached to the EGRVCV with the latch at the 12 o'clock position you will see two rows of three terminals. The top row is numbered 1-3, right to left. The bottom row is numbered 4-6, right to left. Measure the resistance between these terminal pairs:
2 1
2 3
5 4
5 6
... all resistance values should be 20.9-23.1 ohms at 68 degrees F.
Reconnect the EGRVCV connector halves. Turn the ignition switch ON OFF repeatedly. Verify that the EGRVCV shaft moves smoothly forward backward according to the ignition switch position.
The Exhaust Gas Temperature Sensor may be tested with an ohmmeter. The specifications are ...
- at 32 degrees F, 0.68-1.11 Megohms
- at 122 degrees F, 0.09-0.12 Megohms
- at 212 degrees F, 0.017-0.024 Megohms
Diagnostic Trouble code 0302 points to a problem with the Exhaust Gas Recirculation system. The malfunction is detected by the Engine Control Module when no EGR flow is detected under conditions which call for EGR. Possible causes include:
- The electrical harness or connectors (valve circuit open or shorted)
- The EGR valve is stuck closed
- Weak or dead battery
- The EGR passage is clogged
- Faulty EGR temperature sensor circuit
- A leak somewhere in the exhaust system
The EGR Volume Control Valve may be tested with an ohmmeter. Disconnect the electrical connector. Looking at the connector half which is attached to the EGRVCV with the latch at the 12 o'clock position you will see two rows of three terminals. The top row is numbered 1-3, right to left. The bottom row is numbered 4-6, right to left. Measure the resistance between these terminal pairs:
2 1
2 3
5 4
5 6
... all resistance values should be 20.9-23.1 ohms at 68 degrees F.
Reconnect the EGRVCV connector halves. Turn the ignition switch ON OFF repeatedly. Verify that the EGRVCV shaft moves smoothly forward backward according to the ignition switch position.
The Exhaust Gas Temperature Sensor may be tested with an ohmmeter. The specifications are ...
- at 32 degrees F, 0.68-1.11 Megohms
- at 122 degrees F, 0.09-0.12 Megohms
- at 212 degrees F, 0.017-0.024 Megohms
Thread
Thread Starter
Forum
Replies
Last Post
kjlouis
4th Generation Maxima (1995-1999)
11
11-24-2018 06:09 AM
kirkhilles
5th Generation Maxima (2000-2003)
2
08-08-2015 10:53 AM