B166C-LEFT TRAILER TOW LAMP CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(L673) LEFT TRAILER TOW LAMP CONTROL CIRCUIT OPEN
|
(L673) LEFT TRAILER TOW LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
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TOTALLY INTEGRATED POWER MODULE
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Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, clear all DTC's
Turn on the Left Turn Signal.
With the scan tool, read DTC's.
Does the scan tool display active: B166C-LEFT TRAILER TOW LAMP CONTROL CIRCUIT HIGH?
Yes
No
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The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced,
pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
-
Perform the BODY VERIFICATION TEST - VER 1.
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
2.
(L673) LEFT TRAILER TOW LAMP CONTROL CIRCUIT OPEN
Turn the ignition off.
Disconnect the TIPM C6 harness connector.
Disconnect the Left Trailer Tow Lamp harness connectors.
Measure the resistance of the (L673) Left Trailer Tow Lamp Control circuit between the Left Trailer Tow Lamp harness connectors and the TIPM C6 harness connector.
Does the ohm meter read open circuit?
Yes
No
3.
(L673) LEFT TRAILER TOW LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition on.
Measure the voltage on the (L673) Left Trailer Tow Lamp Control circuit.
Is there any voltage present?
Yes
No