Question about Jeep Wrangler
DTC P0650 represents an issue with the actual check engine light (malfunction indicator lamp). Ignition voltage is supplied directly to the malfunction indicator lamp (MIL). The powertrain control module (PCM) controls the lamp by grounding the control circuit via an internal switch called a driver. The primary function of the driver is to supply the ground for the component being controlled. The driver has a fault line which is monitored by the PCM. When the PCM is commanding a component ON, the voltage of the control circuit should be low, near 0 volts. When the PCM is commanding the component control circuit OFF, the voltage potential of the circuit should be high, near battery voltage. If the fault detection circuit senses a voltage other than what is expected, the fault line status will change causing the diagnostic trouble code (DTC) to set.
A DTC P0650 indicates a problem with the circuit to the actual check engine light itself. If the fault is current, check if the check engine (service engine soon) lamp comes on when you turn the ignition on, If not, we will need to pull the engine control computer and ground the wire that goes to the light. If the light comes on, it is a failed pcm which must be replaced and reprogrammed. If not, it is either the circuit to the cluster or the cluster itself.
Posted on Sep 22, 2011
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Apr 21, 2015 | 2000 Pontiac Grand Prix
Sep 28, 2012 | Cars & Trucks
May 10, 2011 | 1996 Chevrolet Caprice
The error code P0650 is a malfunction indicator lamp circuit, malfunction conditions. The possible causes are the MIL control circuit is open, or shorted ground to the system. It is possible that the PCM has failed, and it can either be flashed, or replaced. Remember to use genuine Delco products for optimal service.
Mar 16, 2011 | 2000 Pontiac Grand Prix
Mar 14, 2011 | 2003 Chevrolet Avalanche
Mar 02, 2011 | 2000 Oldsmobile Alero
Sep 25, 2009 | 1997 Jeep Wrangler
Jun 16, 2009 | 1999 Jeep Wrangler
May 10, 2009 | Hyundai Accent Cars & Trucks
Feb 19, 2009 | 1990 Jeep Wrangler
290 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: