Door Ajar Indicator Malfunction
Diagnostic Instructions
Diagnostic Fault Information
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Left Front Door Ajar Switch Signal
|
1
|
2
|
2
|
-
|
Left Rear Door Ajar Switch Signal
|
1
|
2
|
2
|
-
|
Right Front Door Ajar Switch Signal
|
1
|
2
|
2
|
-
|
Right Rear Door Ajar Switch Signal
|
1
|
2
|
2
|
-
|
Driver Door Latch Ground
|
-
|
2
|
-
|
-
|
Passenger Door Latch Ground
|
-
|
2
|
-
|
-
|
Left Rear Door Latch Ground
|
-
|
2
|
-
|
-
|
Right Rear Door Latch Ground
|
-
|
2
|
-
|
-
|
1. Ajar Indicator Always Illuminated
2. Ajar Indicator Inoperative
|
|
| |
Circuit/System Description
The driver window motor and passenger window motor each receive
a discrete input from their respective door ajar switch signal
circuits. The body control module (BCM) receives discrete inputs
from each of the rear door ajar switch signal circuits. The door
ajar switches are integral to each door latch assembly. When a door
is opened, the normally open door ajar switch closes. With the door
ajar switch closed, ground is provided to the door ajar switch
signal circuit. The window motors and/or BCM interprets this and
communicates via serial data with the instrument panel cluster.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Door Ajar Indicator Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Ignition ON, observe the scan
tool Driver Door Ajar Switch parameter while opening and closing
the driver door. The parameter should change between Active and
Inactive. |
| ⇒ |
If the value does not change, refer to Driver Door
Ajar Switch Malfunction. |
| 2. |
Observe the scan tool
Passenger Door Ajar Switch parameter while opening and closing the
front passenger door. The parameter should change between Active
and Inactive. |
| ⇒ |
If the value does not change, refer to Passenger
Door Ajar Switch Malfunction. |
| 3. |
Observe the scan tool Left
Rear Door Ajar Switch and Right Rear Door Ajar Switch parameters
while opening and closing the left and right rear doors. The
parameters should change between Inactive and Active. |
| ⇒ |
If the appropriate value does not change, refer to
Rear Door Ajar Switch Malfunction - with AER. |
| ⇒ |
Or refer to Rear Door Ajar Switch Malfunction -
without AER. |
Circuit/System Testing
Driver Door Ajar Switch Malfunction
| 1. |
Ignition OFF, disconnect the
harness connector at the A23D Door Latch Assembly - Driver.
|
| 2. |
Test for less than 5 Ω
between the ground circuit terminal listed below and ground:
|
| |
• |
Left hand drive A23D Door
Latch Assembly - Driver terminal 8 |
| |
• |
Right hand drive A23D Door
Latch Assembly - Driver terminal 3 |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 3. |
Ignition ON, verify the scan
tool Driver Door Ajar Switch parameter is Inactive. |
| ⇒ |
If not the specified value, test the signal
circuit terminal listed below for a short to ground. If the circuit
tests normal, replace the M74D Window Motor - Driver. |
| |
• |
Left hand drive A23D Door
Latch Assembly - Driver terminal 6 |
| |
• |
Right hand drive A23D Door
Latch Assembly - Driver terminal 1 |
| 4. |
Install a 3 A fused jumper
wire between the signal circuit terminal listed below and ground.
Verify the scan tool Driver Door Ajar Switch parameter is
Active. |
| |
• |
Left hand drive A23D Door
Latch Assembly - Driver terminal 6 |
| |
• |
Right hand drive A23D Door
Latch Assembly - Driver terminal 1 |
| ⇒ |
If not the specified value, test the signal
circuit for a short to voltage or an open/high resistance. If the
circuit tests normal, replace the M74D Window Motor - Driver. |
| 5. |
If all circuits test normal,
test or replace the A23D Door Latch Assembly - Driver. |
Passenger Door Ajar Switch Malfunction
| 1. |
Ignition OFF, disconnect the
harness connector at the A23P Door Latch Assembly -
Passenger. |
| 2. |
Test for less than 5 Ω
between the ground circuit terminal listed below and ground.
|
| |
• |
Left hand drive A23P Door
Latch Assembly - Passenger terminal 3 |
| |
• |
Right hand drive A23P Door
Latch Assembly - Passenger terminal 8 |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 3. |
Ignition ON, verify the scan
tool Passenger Door Ajar Switch parameter is Inactive. |
| ⇒ |
If not the specified value, test the signal
circuit terminal listed below for a short to ground. If the circuit
tests normal, replace the M74P Window Motor - Passenger. |
| |
• |
Left hand drive A23P Door
Latch Assembly - Passenger terminal 1 |
| |
• |
Right hand drive A23P Door
Latch Assembly - Passenger terminal 6 |
| 4. |
Install a 3 A fused jumper
wire between the signal circuit terminal listed below and ground.
Verify the scan tool Passenger Door Ajar Switch parameter is
Active. |
| |
• |
Left hand drive A23P Door
Latch Assembly - Passenger terminal 1 |
| |
• |
Right hand drive A23P Door
Latch Assembly - Passenger terminal 6 |
| ⇒ |
If not the specified value, test the signal
circuit for a short to voltage or an open/high resistance. If the
circuit tests normal, replace the M74P Window Motor -
Passenger. |
| 5. |
If all circuits test normal,
test or replace the A23P Door Latch Assembly - Passenger.
|
Rear Door Ajar Switch Malfunction - with AER
| 1. |
Ignition OFF, disconnect the
harness connector at the appropriate rear door latch. |
| 2. |
Connect the harness connector
at the rear window switch. |
| 3. |
Test for less than 5 Ω
between the ground circuit terminal listed below and ground:
|
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 8 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 3 |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 4. |
Ignition ON, verify the
appropriate scan tool Rear Door Ajar Switch parameter is
Inactive. |
| ⇒ |
If not the specified value, test the signal
circuit terminal listed below for a short to ground. If the circuit
tests normal, replace the rear window motor. |
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 6 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 1 |
| 5. |
Install a 3 A fused jumper
wire between the signal circuit terminal listed below and ground.
Verify the scan tool Rear Door Ajar Switch parameter is
Active. |
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 6 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 1 |
| ⇒ |
If not the specified value, test the signal
circuit for an open/high resistance. If the circuit tests normal,
replace the rear window motor. |
| 6. |
If all circuits tests normal,
test or replace the rear door latch. |
Rear Door Ajar Switch Malfunction - without AER
| 1. |
Ignition OFF, disconnect the
harness connector at the appropriate rear door latch. |
| 2. |
Connect the harness connector
at the rear window switch. |
| 3. |
Test for less than 5 Ω
between the ground circuit terminal listed below and ground:
|
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 8 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 3 |
| ⇒ |
If greater than the specified range, test the
ground circuit for an open/high resistance. |
| 4. |
Ignition ON, verify the
appropriate scan tool Rear Door Ajar Switch parameter is
Inactive. |
| ⇒ |
If not the specified value, test the signal
circuit terminal listed below for a short to ground. If the circuit
tests normal, replace the K9 Body Control Module. |
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 6 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 1 |
| 5. |
Install a 3 A fused jumper
wire between the signal circuit terminal listed below and ground.
Verify the scan tool Rear Door Ajar Switch parameter is
Active. |
| |
• |
A23LR Door Latch Assembly -
Left Rear terminal 6 |
| |
• |
A23RR Door Latch Assembly -
Right Rear terminal 1 |
| ⇒ |
If not the specified value, test the signal
circuit for an open/high resistance. If the circuit tests normal,
replace the K9 Body Control Module. |
| 6. |
If all circuits tests normal,
test or replace the rear door latch. |
Component Testing
Static Test
| 1. |
Ignition OFF, disconnect the
harness connector at the appropriate door latch. |
| 2. |
With the door in the closed
position, test for infinite resistance between the signal and the
ground terminals listed below: |
| |
• |
Left hand drive A23D Door
Latch Assembly - Driver signal terminal 6 and ground terminal
8 |
| |
• |
Right hand drive A23D Door
Latch Assembly - Driver signal terminal 1 and ground terminal
3 |
| |
• |
Left hand drive A23P Door
Latch Assembly - Passenger signal terminal 1 and ground terminal
3 |
| |
• |
Right hand drive A23P Door
Latch Assembly - Passenger signal terminal 6 and ground terminal
8 |
| |
• |
A23LR Door Latch Assembly -
Left Rear signal terminal 6 and ground terminal 8 |
| |
• |
A23RR Door Latch Assembly -
Right Rear signal terminal 1 and ground terminal 3 |
| ⇒ |
If not the specified value, replace the door
latch. |
| 3. |
With the door in the open
position, test for less than 5 Ω between the signal and the
ground terminals listed below: |
| |
• |
Left hand drive A23D Door
Latch Assembly - Driver signal terminal 6 and ground terminal
8 |
| |
• |
Right hand drive A23D Door
Latch Assembly - Driver signal terminal 1 and ground terminal
3 |
| |
• |
Left hand drive A23P Door
Latch Assembly - Passenger signal terminal 1 and ground terminal
3 |
| |
• |
Right hand drive A23P Door
Latch Assembly - Passenger signal terminal 6 and ground terminal
8 |
| |
• |
A23LR Door Latch Assembly -
Left Rear signal terminal 6 and ground terminal 8 |
| |
• |
A23RR Door Latch Assembly -
Right Rear signal terminal 1 and ground terminal 3 |
| ⇒ |
If greater than the specified range, replace the
door latch. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
|
