Symptom:
*NO RESPONSE FROM ACM
POSSIBLE CAUSES
CHECKING FOR VOLTAGE AT ACM
GROUND CIRCUIT OPEN
PCI BUS CIRCUIT OPEN
AIRBAG CONTROL MODULE
TEST ACTION APPLICABILITY
1 Ensure that the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Turn the ignition on and then reconnect the Battery.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output (Run) Circuit and the Fused Ignition Switch Output (Run/Start) Circuit at
the ACM connector.
NOTE: One open circuit will not cause a NO RESPONSE condition.
Is the test light illuminated on both circuits?
All
Yes → Go To 2
No → Repair the Fused Ignition Switch Output (Run) and Fused
Ignition Switch Output (Run/Start) circuits for an open.
Perform AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components, the ignition must be
turned off and the battery must be disconnected.
2 Ensure that the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
NOTE: Make sure test light is connected to the Battery positive terminal.
Is the test light illuminated?
All
Yes → Go To 3
No → Repair the Ground circuit for an open.
Perform AIRBAG VERIFICATION TEST - VER 1.
When reconnectingAirbag system components, the ignition must be turned
off and the battery must be disconnected.
99
COMMUNICATION
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