Need wiring diagram for 80 vette power door locks

Important: If all 3 passenger door locks are inoperative from both door lock switches, test the unlock control circuit between the splice and the BCM for an open.? Do you know how to do this ? Looking at a wiring diagram an using a DMM - digital multi-meter ?
Free wiring diagrams here http://www.bbbind.com/free-tsb , enter vehicle info. year , make , model an engine size . under system click on body & accessories , then under subsystem click on power locks . Click search button then the blue link . Or maybe your best bet mite be to take it to a qualified repair shop. You would need factory service repair info. to find splice location .

Power Door Locks Inoperative - Passenger Door
Step
Action
Yes
No
Schematic Reference: Door Lock/Indicator Schematics
Connector End View Reference: Vehicle Access Connector End Views
DEFINITION: One or all 3 of the passenger door lock actuators do not operate, or, the front passenger door lock switch does not operate.
1
Did you perform the Diagnostic System Check - Vehicle?
Go to Step 2
Go to Diagnostic System Check - Vehicle
2
Verify that the Power Door Locks Inoperative - Passenger Door fault is present.
Do the door locks operate as described in Power Door Locks Description and Operation ?
Go to Testing for Intermittent Conditions and Poor Connections
Go to Step 3
3
Are all 3 of the passenger doors locks inoperative from both door lock switches?
Go to Step 10
Go to Step 4
4
Install a scan tool.
Close all of the vehicle doors.
With the scan tool, observe the Right Front (RF) Door Lock Switch parameter in the Data Display, Inputs list of the body control module (BCM).
Operate the front passenger door lock switch to both the LOCK and UNLOCK positions.
Did the parameter change to both the LOCK and UNLOCK states?
Go to Step 7
Go to Step 5
5
Important: If the 3-amp fuse of the jumper wire opens when the jumper wire is connected, test the appropriate signal circuit for a short to battery positive voltage.
Disconnect the harness connector of the front passenger door lock switch.
Connect a 3-amp fused jumper wire between the lock switch lock signal circuit of the harness connector and a ground.
Observe the RF Door Lock Switch parameter.
Connect the 3-amp fused jumper wire between the lock switch unlock signal circuit of the harness connector and a ground.
Observe the RF Door Lock Switch parameter.
Did the Scan Tool parameter change to the both the LOCK and UNLOCK states?
Go to Step 6
Go to Step 8
6
Connect the 3-amp fused jumper wire between the lock switch lock signal circuit and the ground circuit of the harness connector while observing the appropriate Scan Tool parameter.
Did the Scan Tool parameter change to the LOCK state?
Go to Step 11
Go to Step 14
7
Disconnect the harness connector of the inoperative door lock actuator.
Connect a test lamp between the door lock actuator lock control circuit and the door lock actuator unlock control circuit of the harness connector.
Operate the front passenger door lock switch to the LOCK and UNLOCK positions.
Did the test lamp illuminate in both positions?
Go to Step 13
Go to Step 9
8
Test the signal circuits of the front passenger door lock switch for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 12
9
Test the lock control circuit of the inoperative door lock actuator for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 10
10
Important: If all 3 passenger door locks are inoperative from both door lock switches, test the unlock control circuit between the splice and the BCM for an open.
Test the unlock control circuit of the inoperative door lock actuator for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 12
11
Inspect for poor connections at the harness connector of the front passenger door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 15
12
Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 16
13
Inspect for poor connections at the harness connector of the inoperative door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 18
Go to Step 17
14
Repair the open ground circuit of the front passenger door lock switch. Refer to Circuit Testing and Wiring Repairs .
Did you complete the repair?
Go to Step 18
--
15
Replace the front passenger door lock switch. Refer to Front Side Door Lock Replacement .
Did you complete the replacement?
Go to Step 18
--
16
Replace the BCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 18
--
17
Replace the inoperative door lock actuator. Refer to Front Side Door Lock Actuator Replacement
Did you complete the replacement?
Go to Step 18
--
18
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

The power door locks are controlled by the BCM -body control module ! The door lock switch is an input to the BCM .
The BCM, upon receipt of a door lock switch lock or unlock signal, will switch the appropriate door lock actuator control circuits to battery positive voltage. The opposing side of the door lock actuators are connected to ground internally within the BCM through the other door lock actuator control circuit and the doors will lock or unlock appropriately.
First thing to do would be check power an ground circuits at the BCM ! Do you have any other systems not working -power windows etc...
The DR/LCK fuse supplies battery positive voltage to the I/P fuse block for the door lock system. The body control module (BCM) supplies and monitors a reference voltage to the door lock switch through the door lock switch lock/unlock signal circuit. The door lock switch also receives a constant ground source. If a door lock switch is placed in the lock position or unlock position, the reference voltage is taken directly to ground and the BCM detects the voltage drop on the signal circuit.
Should have BCM checked for stored DTC'S - diagnostic trouble codes !
Ignition ON, observe the scan tool Driver Door Lock Sw, Psgr Door Lock Sw, Driver Door Unlock Sw and Psgr Door Unlock Sw parameters while using the driver and passenger door lock switches. The parameters should change between Active and Inactive.
?‡'
If the values does not change between the commanded states, refer to Door Lock Switch Malfunction.

Command the driver door and passenger door lock actuators to LOCK and UNLOCK with the scan tool, the doors should LOCK and UNLOCK when changing between commanded states.
?‡'
If a door lock actuator does not perform the LOCK and UNLOCK functions, refer to Door Lock Malfunction

DTC B3130 00: All Door Unlock Circuit

DTC B3135 00: All Door Lock Circuit

The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following
?€¢
A door lock switch lock or unlock actuation.

?€¢
A door lock cylinder switch unlock actuation.

?€¢
A keyless entry transmitter actuation.

?€¢
An automatic door lock actuation (Personalization function).

?€¢
An automatic door unlock actuation (Personalization function).

?€¢
A last door closed locking (LDCL) actuation (Personalization function).

Door Lock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the lock position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the lock position.
Driver Door Unlock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the unlock position, it switches the driver door lock actuator unlock control circuit to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the left front (LF) door lock actuator motor transitions to the Unlock position.
The driver door lock actuator unlock control circuit is a dedicated control circuit used only for the driver door lock actuator motor. This is done so that the driver door may be unlocked by itself using a keyless entry transmitter or an automatic door unlock function (if programmed).
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections.
A factory scan tool would help for checking inputs from the door switches to the BCM ! You could do it with out scan tool , a lot more work involved ! Need a wiring diagram an a component location chart an wiring harness routing diagram !
Most intermittent conditions are caused by faulty electrical connections or wiring. Inspect for the following items:
?€¢
Wiring broken inside the insulation

?€¢
Poor connection between the male and female terminal at a connector

?€¢
Poor terminal to wire connection--Some conditions which fall under this description are poor crimps, poor solder joints, crimping over the wire insulation rather than the wire itself, and corrosion in the wire to terminal contact area, etc.

?€¢
Pierced or damaged insulation can allow moisture to enter the wiring causing corrosion. The conductor can corrode inside the insulation, with little visible evidence. Look for swollen and stiff sections of wire in the suspect circuits.

?€¢
Wiring which has been pinched, cut, or its insulation rubbed through may cause an intermittent open or short as the bare area touches other wiring or parts of the vehicle.

?€¢
Wiring that comes in contact with hot or exhaust components

?€¢
Refer to Inducing Intermittent Fault Conditions in order to duplicate the conditions required, in order to verify the customer concern.

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Refer to Testing for Electrical Intermittents for test procedures to detect intermittent open, high resistance, short to ground, and short to voltage conditions.

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Refer to Scan Tool Snapshot Procedure for advanced intermittent diagnosis and Vehicle Data Recorder operation.

You should take it to a ASE certified repair shop if not familiar with Automotive electronics !

Check the wire lume that runs from the body to the door inside a rubber bellow. the wires can break from constant moving and I'm not sure what vehicle you have, but this is a defect for a few vehicles out there the wire can be to short in some cases from cost saving manufacturing. It may be necessary to remove the door panel and remove the harness through the wire opening to be able to move the boot far enough to access the broken wire or even just to check it in some cases.
How I like to repair it, is to put a new wire through the entire pivot point and join it inside the door and body where the wire does not move constantly.

Hope this helps

The power door locks are controlled by a Body computer or GEM module . Do yourself a favor an take it to a qualified repair shop because you don't have a clue .

I really doubt one loose door latch will keep all the door locks from working . There are a lot of thing's involved in the power door locks ,relay's , wiring , master control switch etc..... Viewing wiring diagrams , testing electrical circuit's , PWR LOCKS 20A fuse etc....Are the power door locks and the driver power window inoperative?

Did you review the Power Door Locks Description and Operation?
YES - Go to Step 2
NO - Go to Symptoms - Doors
2
Verify that the power door locks are inoperative.
Do the power door locks operate normally?
YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring System
NO - Go to Step 3
3
Are the power door locks and the driver power window inoperative?
YES - Go to Step 7
NO - Go to Step 4
4
Are the power door locks inoperative from a single door lock switch?
YES - Go to Step 5
NO - Go to Step 6
5
Is the driver door lock switch the inoperative switch?
YES - Go to Step 8
NO - Go to Step 9
6
Is the driver door lock actuator the inoperative actuator?

Test the battery positive voltage circuit of the drivers switch assembly for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 8
8
Test the ground circuit of the drivers switch assembly for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 13
9
Test the passenger door lock switch control circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 12
10
Test the driver door lock actuator unlock control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 14
11
Test the door lock actuator control circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 15
12
Test the passenger door lock switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 16
13
Inspect for poor connections at the harness connector of the drivers switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 17
14
Inspect for poor connections at the harness connector of the driver door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 18
15
Inspect for poor connections at the harness connector of the appropriate passenger door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 19
16
Inspect for poor connections at the harness connector of the passenger door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21
Go to Step 20
17
Replace the driver switch assembly. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .
Did you complete the repair?
Go to Step 21
--
18
Replace the driver door lock actuator. Refer to Front Side Door Lock Replacement .
Did you complete the repair?
Go to Step 21
--
19
Replace the appropriate passenger door lock actuator. Refer to Front Side Door Lock Replacement or Rear Door Lock Replacement .
Did you complete the repair?
Go to Step 21
--
20
Replace the passenger door lock switch. Refer to Door Lock and Side Window and Outside Rearview Mirror Remote Control Switch Replacement .
Did you complete the repair?
Go to Step 21
--
21
Operate the system in order to verify the repair.
Did you find and correct the condition?
System OK
Go to Step 2

Go to faxon auto literature.com. They carry original dealer service manuals and have the one you need. It will have complete wiring diagrams for your van. I have used them before and had excellent service. Hope this helps.

Visual Inspection Chart Mechanical Electrical

• Binding latches
• Door lock cylinder
• Misaligned door
• Lock actuator

• Fuse
• Relays
• Switch
• Wiring harness
• Loose or corroded connections

Symptom Chart Condition Possible Sources Action

• The door lock is inoperative

• Circuitry.
• Power door lock actuator (218A42).

• GO to Pinpoint Test A .

PINPOINT TEST A: THE DOOR LOCK IS INOPERATIVE CONDITIONS DETAILS/RESULTS/ACTIONS A1 CHECK THE OPERATION OF THE SUSPECT DOOR LOCK Check for binding or stuck conditions by manually operating the inoperative door lock.

• Is the lock stuck or binding?

Yes REPAIR or REPLACE the binding components. TEST the system for normal operation.
No GO to A2 . A2 CHECK THE POWER DOOR LOCK ACTUATOR FOR LOCK OPERATION — CIRCUIT 117 (PK/BK)
Inoperative Power Door Lock Actuator

Measure the voltage at the inoperative power door lock actuator connector Pin 1, Circuit 117 (PK/BK), and ground while operating the door lock switch to the LOCK position.

• Is the voltage greater than 10 volts?

Yes GO to A3 .
No REPAIR Circuit 117 (PK/BK). TEST the system for normal operation. A3 CHECK THE POWER DOOR LOCK ACTUATOR FOR UNLOCK OPERATION — CIRCUIT 118 (PK/O)/163 (R/O)
Measure the voltage at the inoperative power door lock actuator connector Pin 2, Circuit 118 (PK/O) or 163 R/O, and ground while operating the door lock switch to the UNLOCK position.

• Is the voltage greater than 10 volts?

Yes INSTALL a new power door lock actuator. TEST the system for normal operation.
No REPAIR Circuit 118 (PK/O) and/or 163 (R/O). TEST the system for normal operation.

Likely you are looking for a 30 amp circuit breaker...(Looks like a small rectangular metal fuse) But...if the power door locks work, i don't think that it's bad (serves locks & windows) My diagrams show a bunch of diodes and resistors inside the master (drivers) door switch, but I've had a few apart and never saw any. (embedded?) Personally I don't see anything that shows me reliability built into the switch...It's a really "iffy" design (one in my niece's Jeep only works when the sun shines on the drivers door) There is also a control module associated with the windows but I've never needed to replace one and the manuals never tell you where they are!
Check power at the switch and check harness where it goes through the rubber boot between the door and body. at least 80% of problems I've seen are either the switch or that wiring. Wires can be spliced and you can get a decent used switch at most scrap yards.
Good luck...glad they aren't stuck down!!!

Sounds like you have loose wiring or a short in the power door locks. Try looking behind the power door lock switch and work your way back through the door to see if there are any loose or bare wires touching on any doors with a lock button. A Chilton or Haynes Manual for your exact car may be found at a library or most auto parts stores, and they'd be able to give you the exact location and diagrams of the wiring for your power door locks. The dome light may be a loose or broken switch in the door that turns the lights on/off when you open/close the door, try tightening the bolts or nuts holding this switch to the door frame. Hope I could help.