What should voltage drop be on DLC pin 4?
What should voltage drop be on DLC pin 4?
TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. Do not connect to body or chassis ground but to the battery terminal directly With the ignition on, voltage drop across the ground terminal should be 0.1 Volts or less
Where is the DLC on a GM 94?
Locate Data Link Connector (DLC), see image below. Turn Ignition switch to ON position. Count the flashes on the “ CHECK ENGINE ” or “ SERVICE ENGINE ” light. NOTE: Some 94 & 95 models do not have the B terminal. In which case a scanner is required.
What does code 12 mean on ground terminals?
Ground terminals A and B (see diagram below) with the ignition “ON” and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light.
When to disconnect the DLC3 from the ECU?
If a malfunction is present, DTCs will be output. When a particular warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected. (a) Disconnect the A24 connector from the ECM. (b) Measure the resistance according to the value (s) in the table below.
Where is the jump start terminal on a van?
Though they normally have a bolt or something to attach to near the battery. Often when vehicles have inaccessible battery terminals there will be specific jump start or charging terminals somewhere more convenient. This is often the case with vans which frequently have the battery located under the passenger seat.
How to connect jumper cable to negative battery terminal?
I was always taught to connect the jumper cables as follows: With + to +, and – on the assisting vehicle to a good ground point on the car with the dead battery. But given that the negative terminal is not accessible, I did not want to try it.
Why do we connect a battery to ground when jumping?
When jumping a car, we connect the + end of the charged battery to the + end of the dead battery, and the – end of the charged battery to the chassis or other metal part of the car. I always thought that you need a closed circuit for current to flow.
Ground terminals A and B (see diagram below) with the ignition “ON” and engine not running. The system will enter the diagnostic mode. In this mode, the computer will display a Code 12, three consecutive times, by flashing the “CHECK ENGINE”, “SERVICE ENGINE SOON” or “MALFUNCTION INDICATOR LAMP” or light.
