B1634-LEFT HI BEAM CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    Continuously.

  • Set Condition:

    When the Totally Integrated Power Module (TIPM) detects a HIGH condition.


Possible Causes
  
CHECK (Z904) GROUND CIRCUIT
  
(Z904) GROUND CIRCUIT OPEN
  
CHECK (L33) LEFT HIGH BEAM CONTROL CIRCUIT
  
(L33) LEFT HIGH BEAM CONTROL CIRCUIT OPEN
  
(L33) LEFT HIGH BEAM CONTROL CIRCUIT SHORT TO VOLTAGE
  
LEFT HIGH BEAM BULB
  
TOTALLY INTEGRATED POWER MODULE
  



Diagnostic Test

1.INTERMITTENT CONDITION






Does the scan tool display active: B1634-LEFT HIGH BEAM CONTROL CIRCUIT HIGH?

Yes
  • Go To 2


No
  • 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 — VER1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2.CHECK (Z904) GROUND CIRCUITS





Does the test light illuminate brightly on each ground circuit?

Yes
  • Go To 4


No
  • Go To 3

3.(Z904) GROUND CIRCUIT OPEN



Is the resistance below 10.0 ohms?

Yes


No

4.CHECK (L33) LEFT HIGH 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
  • Go To 5

5.(L33) LEFT HIGH BEAM CONTROL CIRCUIT OPEN





Is the resistance below 10.0 ohms?

Yes
  • Go To 6


No

6.(L33) LEFT HIGH BEAM CONTROL CIRCUIT SHORT TO VOLTAGE




Is there any voltage present?

Yes


No