Chrysler Town and Country 2003 Owner's Manual page 438

COMMUNICATION
*NO RESPONSE FROM TRANSMISSION CONTROL MODULE - EATX —
Continued
TEST
3 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Remove the starter relay from the IPM.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output (Start) circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Observe the test light while momentarily turning the ignition switch to the Start
position.
Does the test light illuminate brightly?
Yes → Go To 4
No
Note: Reinstall the original Starter Relay.
4 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Remove the starter relay from the IPM.
With a voltmeter in the millivolt scale, measure the voltage of the Fused Ignition
Switch Output (Start) circuit.
NOTE: A no response condition can exist if voltage is present on this circuit
with the ignition switch in any position except for the Start position.
NOTE: Voltage up to .080 millivolts can cause this condition.
NOTE: Check for after market components that could cause this condition.
Perform this step with the Ignition Switch in every position except for the Start
position.
Is any voltage present?
Yes → Repair the Fused Ignition Switch Output (Start) circuit for a
No
Note: Reinstall the original Starter Relay.
5 Turn the ignition off.
Disconnect the TCM harness connector.
Using a 12-volt test light connected to ground, check the Fused B(+) circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?
Yes → Go To 6
No
ACTION
→ Repair the Fused Ignition Switch Output (Start) circuit for an
open. Refer to the wiring diagrams located in the Service Infor-
mation.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
short to voltage. Refer to the wiring diagrams located in the
Service Information.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
→ Go To 5
→ Repair the Fused B(+) circuit for an open. Refer to the wiring
diagrams located in the Service Information.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
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APPLICABILITY
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All
All