Dodge Ram. Manual — part 20
Symptom:
LEFT CURTAIN SQUIB 1 SHORT TO GROUND
When Monitored and Set Condition:
LEFT CURTAIN SQUIB 1 SHORT TO GROUND
When Monitored:
With the ignition on, the ACM monitors the resistance of the Left
Curtain Squib 1 circuits.
Set Condition:
When the ACM detects a short to ground in either Left Curtain Squib 1
circuits.
POSSIBLE CAUSES
LEFT CURTAIN SQUIB 1 SHORT TO GROUND
LEFT CURTAIN SQUIB 1 LINE 1 OR LINE 2 SHORTED TO GROUND
ACM, LEFT CURTAIN SQUIB 1 SHORT TO GROUND
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
NOTE: Ensure that the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
All
ACM - ACTIVE DTC
Go To
2
ACM - STORED DTC
Go To
5
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
77
AIRBAG
TEST
ACTION
APPLICABILITY
2
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BEFORE
PROCEEDING.
Disconnect the Left Curtain Airbag connector(s).
NOTE: Check connectors - Clean and repair as necessary.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN
INTACT UNDEPLOYED CURTAIN AIRBAG FACE DOWN ON A HARD SUR-
FACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY
DEPLOYED.
Connect the appropriate Load Tool to the Left Curtain Airbag connector(s).
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN IGNITION
ON, THEN RECONNECT THE BATTERY.
With the DRBIII
t, read active Airbag Control Module DTC’s.
Does the DRBIII
t show LEFT CURTAIN SQUIB 1 SHORT TO GROUND?
All
Yes
→ Go To 3
No
→ Replace the Left Curtain Airbag in accordance with Service
Instructions.
Perform __AIRBAG VERIFICATION TEST - VER 1.
3
WARNING: TURN IGNITION OFF, DISCONNECT THE BATTERY AND WAIT
TWO MINUTES BEFORE PROCEEDING.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, DO NOT PLACE AN
INTACT UNDEPLOYED CURTAIN AIRBAG FACE DOWN ON A HARD SUR-
FACE, THE AIRBAG WILL PROPEL INTO THE AIR IF ACCIDENTALLY
DEPLOYED.
Disconnect the Load Tool from the Left Curtain Airbag connector(s).
Disconnect the Airbag Control Module connector(s).
NOTE: Check connectors - Clean and repair as necessary.
Connect the appropriate Load Tool ACM adaptor to the ACM connector(s).
Measure the resistance of the Driver Curtain Squib Line 1 and Line 2 circuits
between the Left Curtain Airbag connector and ground.
Is the resistance below 10K ohms on either circuit?
All
Yes
→ Repair Left Curtain Squib 1 Line 1 or Line 2 shorted to ground.
Perform __AIRBAG VERIFICATION TEST - VER 1.
No
→ Go To 4
4
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
WARNING: IF THE AIRBAG CONTROL MODULE IS DROPPED AT ANY
TIME, IT MUST BE REPLACED. FAILURE TO TAKE THE PROPER PRE-
CAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND PERSONAL INJURY OR DEATH.
If there are no possible causes remaining, view repair.
All
Repair:
Replace the Airbag Control Module in accordance with Service
Information.
Perform __AIRBAG VERIFICATION TEST - VER 1.
78
AIRBAG
LEFT CURTAIN SQUIB 1 SHORT TO GROUND —
Continued
TEST
ACTION
APPLICABILITY
5
With the DRBIII
t, record and erase all DTC’s from all Airbag modules.
If equipped with Passenger Airbag On - Off switch, read the DTC’s in all switch
positions.
If any ACTIVE codes are present they must be resolved before diagnosing any stored
codes.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chaffed, pierced, pinched, or partially broken wires and broken, bent, pushed
out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent
problem.
Reconnect any disconnected components and harness connector.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, THEN RECONNECT THE BATTERY.
With the DRBIII
t monitor active codes as you work through the following steps.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, MAINTAIN A SAFE
DISTANCE FROM ALL AIRBAGS WHILE PERFORMING THE FOLLOWING
STEPS.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop
to stop.
IF only stored codes return continue the test until the problem area has been isolated
In the previous steps you have attempted to recreate the conditions responsible for
setting active DTC in question.
Are any ACTIVE DTCs present?
All
Yes
→ Select appropriate symptom from Symptom List.
No
→ No problem found at this time. Erase all codes before returning
vehicle to customer.
79
AIRBAG
LEFT CURTAIN SQUIB 1 SHORT TO GROUND —
Continued
Symptom:
LEFT SIDE IMPACT SENSOR 1 INTERNAL 1
When Monitored and Set Condition:
LEFT SIDE IMPACT SENSOR 1 INTERNAL 1
When Monitored:
At ignition on, the Left Side Impact Sensor 1 is equipped with onboard
diagnostics to monitor the sensors internal circuits. If a problem is identified the sensor
sends the Left Side Impact Sensor 1 internal 1 message to the ACM.
Set Condition:
The code will set, if the ACM receives an Impact Sensor Internal 1
message from the Left Side Impact Sensor 1.
POSSIBLE CAUSES
ACM, LEFT SIDE IMPACT SENSOR 1
REPAIR IS COMPLETE
STORED CODE OR INTERMITTENT CONDITION
ACTIVE CODE PRESENT
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
NOTE: Ensure the battery is fully charged.
NOTE: For the purpose of this test, the AECM and ORC modules will be
referred to as an ACM.
SELECT ACTIVE or STORED DTC:
All
ACM - ACTIVE DTC
Go To
2
ACM - STORED DTC
Go To
4
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
2
Replace the Left Side Impact Sensor 1.
Reconnect the vehicle wire harness to the impact sensor.
Remove any special tools or jumper wires and reconnect all previously disconnected
components - except the Battery.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION ON, THEN RECONNECT THE BATTERY.
Connect the DRB to the Data Link Connector - use the most current software
available.
Use the DRB III and erase the stored codes in all airbag system modules.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes and if there are none present read the stored
codes.
DID the active Left Side Impact Sensor 1 DTC return?
All
Yes
→ Go To 3
No
→ Repair is complete.
Perform __AIRBAG VERIFICATION TEST - VER 1.
80
AIRBAG
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