How many terminals are in an OBD-II DLC?
Any vehicle manufacture from 1996 or later is required by law to have the OBD-II computer system. You can access this system through the Data Link Connector (DLC). It is a 16 pin connector that can tell you which protocol your car communicates with, depending on which pins are populated in it.
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 are the DLC pins on the PCM?
Studying the PCM pinouts seems to indicate that there are just two DLC pins connected directly to the PCM and they are: PCM pin 5 to DLC Terminal 10 and PCM pin 79 to DLC Terminal 7 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.
How can I measure the voltage of my DLC?
Since most of these 16 pin terminals of the DLC are used to communicate with your vehicle modules, you can use the following guide to measure the power, ground and signal data link voltages readings as shown below. 1.) With your voltmeter negative lead connected to the battery ground post and positive lead connected to following terminal pins:
Can a Mazda MPV communicate with the K Line?
The fuse box aka Power Panel was no good. Replaced it and PCM was able to receive power as well as communicate via the K-Line! Test 3 above does not apply to a Mazda MPV!
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
Studying the PCM pinouts seems to indicate that there are just two DLC pins connected directly to the PCM and they are: PCM pin 5 to DLC Terminal 10 and PCM pin 79 to DLC Terminal 7 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.
Since most of these 16 pin terminals of the DLC are used to communicate with your vehicle modules, you can use the following guide to measure the power, ground and signal data link voltages readings as shown below. 1.) With your voltmeter negative lead connected to the battery ground post and positive lead connected to following terminal pins:
The fuse box aka Power Panel was no good. Replaced it and PCM was able to receive power as well as communicate via the K-Line! Test 3 above does not apply to a Mazda MPV!