B162C-LEFT LOW BEAM CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.



Possible Causes
CHECK (Z904) GROUND CIRCUIT
(Z904) GROUND CIRCUIT OPEN
CHECK (L43) LEFT LOW BEAM CONTROL CIRCUIT
(L43) LEFT LOW BEAM CONTROL CIRCUIT OPEN
(L43) LEFT LOW BEAM CONTROL CIRCUIT SHORTED TO VOLTAGE
LEFT LOW BEAM BULB
TOTALLY INTEGRATED POWER MODULE




Diagnostic Test

1. INTERMITTENT CONDITION

Turn the ignition on.
With the scan tool, clear all DTC's.
Turn the Headlamps on.
With the scan tool, read DTC's.

Does the scan tool display active: B162C-LEFT LOW BEAM CONTROL CIRCUIT HIGH?

Yes


No

2. CHECK (Z904) GROUND CIRCUITS

Turn the ignition off.
Disconnect the Left Low Beam Lamp harness connector.
With a 12–volt test light connected to 12–volts, probe each (Z904) Ground circuit.

Does the test light illuminate brightly on each ground circuit?

Yes


No

3. (Z904) GROUND CIRCUIT OPEN

Measure the resistance of the appropriate (Z904) Ground circuit(s) at the Left Low Beam harness connector.

Is the resistance below 10.0 ohms?

Yes


No

4. CHECK (L43) LEFT LOW BEAM CONTROL CIRCUIT



Turn the ignition on.
With a 12–volt test light connected to ground, check the (L43) Left Low Beam Control circuit.

Does the test light illuminate brightly with the headlamps switch turned on, and shut off with the headlamps turned off?

Yes


No

5. (L43) LEFT LOW BEAM CONTROL CIRCUIT OPEN

Turn the ignition off.
Disconnect the TIPM C3 harness connector.
Measure the resistance of the (L43) Left Low Beam Control circuit between the Left Low Beam harness connector and the TIPM C3 harness connector.

Is the resistance below 10.0 ohms?

Yes


No

6. (L43) LEFT LOW BEAM CONTROL CIRCUIT SHORTED TO VOLTAGE

Turn the ignition on.
Measure for voltage on the (L43) Left Low Beam Control circuit.

Is there any voltage present?

Yes


No