Code 43
Thread Starter
Pro
Joined: Aug 2004
Posts: 544
Likes: 0
Code 42
I'm getting a code 42 on my new engine install. engine cranks no fire. Code is EST grounded. Spark module ground problem? I've checked all connections and they look good. Engine fired up yesterday. Then tonight fired for 5 seconds and shut off, threw code, won't start.
Edit: Ok, the ground wire broke out of the loop connector near the TB. I fixed it, but still same code and no start.
Edit: Ok, the ground wire broke out of the loop connector near the TB. I fixed it, but still same code and no start.
Last edited by ztrips; May 24, 2005 at 09:04 PM.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by ztrips
I'm getting a code 42 on my new engine install. engine cranks no fire. Code is EST grounded. Spark module ground problem? I've checked all connections and they look good. Engine fired up yesterday. Then tonight fired for 5 seconds and shut off, threw code, won't start.
Edit: Ok, the ground wire broke out of the loop connector near the TB. I fixed it, but still same code and no start.
Edit: Ok, the ground wire broke out of the loop connector near the TB. I fixed it, but still same code and no start.
Here is some diagnostic tips:
A:
Disconnect the module connector, using a volt meter set to AC Volts probe PIN "B" of the module harness connector. Crank the engine, observe your meter. The meter should read between 1 and 4 volts
B: If it does then:
With a test light clipped to Battery Positive, and with the ignition OFF, probe pin "A", the test light should come on.
If it does, then you have a bad ignition module, if the light does not come on then you have an open ground circuit.
If in test "A" you did not see 1 to 4 volts then:
Disconnect the PCM "BLUE" connector. With a test light connected to Battery Positive, probe Pin 5 of the blue connector. Do this with the module connector unplugged. If the light comes on you have a grounded circuit between the PCM and the module connector.
If the light does not come on then probe the same terminal with the test light connected to ground. If the light comes on then you have a short to Battery Positive in that circuit. If the light does not come on then you have a faulty PCM.
