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Home >> Suzuki >> 2011 >> Grand Vitara Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 118 (Lighting Systems) >> Diagnostic Information and Procedures >> Headlamp (LO) Circuit Check >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Suzuki Equator. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to HEADLAMP: WIRING DIAGRAM (without DTRL) or DAYTIME LIGHT SYSTEM: WIRING DIAGRAM (with DTRL).

DIAGNOSIS PROCEDURE CHART

Step Action YES NO
CHECK HEADLAMP (LO) FUSES 
  1. Turn the ignition switch OFF.
  2. Check that the following fuses are not open.

Is the fuse open? 
Repair the harness and replace the fuse. GO TO 2
CHECK HEADLAMP (LO) OUTPUT VOLTAGE 
  1. Turn the ignition switch OFF.
G06443453Courtesy of SUZUKI OF AMERICA CORP.

  1. 2. Disconnect the front combination lamp connector.
  2. 3. Turn the ignition switch ON.
  3. 4. Turn the low beam headlamps ON.
  4. 5. With the low beam headlamps ON, check the voltage between the combination lamp connector and ground.

Is battery voltage present? 
GO TO 8 CHECK HEADLAMP (LO) CIRCUIT FOR OPEN GO TO 3
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN 
  1. Turn the ignition switch OFF.
  2. Disconnect IPDM E/R connector E123.
  3. Check continuity between the IPDM E/R harness connector (A) and the front headlamp harness connector (B).
G06443454

Does continuity exist? 
Replace IPDM E/R. Refer to [IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM): REMOVAL AND INSTALLATION ]. Repair the harnesses or connectors.
CHECK HEADLAMP (LO) CIRCUIT FOR OPEN (LH WITH DTRL) 
  1. Turn the ignition switch OFF.
  2. Disconnect IPDM E/R connector E123 and daytime light relay 2 connector.
  3. Check continuity between the IPDM E/R harness connector and the daytime light relay 2 harness connector.
G00512507Courtesy of SUZUKI OF AMERICA CORP.

Does continuity exist? 
GO TO 5 Repair the harnesses or connectors.
CHECK DAYTIME LIGHT RELAY 2 CIRCUIT (LH WITH DTRL) 
  1. Check continuity between the daytime light relay 2 harness connector and the front headlamp LH harness connector.
  2. Check continuity between the daytime light relay 2 harness connector and ground.
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G00512508G00512509

Does continuity exist? 
GO TO 6 Repair the harnesses or connectors.
CHECK DAYTIME LIGHT RELAY 2 GROUND CIRCUIT 
Check continuity between daytime light relay 2 harness connector and ground.
Does continuity exist? 
GO TO 7 Repair the harness or connector.
CHECK DAYTIME LIGHT RELAY 2 
Check daytime light relay 2. Refer to Component Inspection .
Is the inspection result normal? 
Replace IPDM E/R. Refer to [IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM): REMOVAL AND INSTALLATION ]. Replace daytime light relay 2.
CHECK FRONT HEADLAMP (LO) GROUND CIRCUIT 
Check continuity between the front headlamp harness connector terminal 2 and ground.
Does continuity exist? 
Inspect the headlamp bulb. Repair the harness.
CHECK CONTINUITY BETWEEN FRONT HEADLAMP LH (HI) AND DAYTIME LIGHT RELAY 1 
  1. Disconnect daytime light relay 1 connector.
  2. Check continuity between front headlamp LH harness connector and daytime light relay 1 harness connector.

Does continuity exist? 
GO TO 10 Repair the harness or connector.
10  CHECK DAYTIME LIGHT RELAY 1 GROUND CIRCUIT 
Check continuity between daytime light relay 1 harness connector and ground.
Does continuity exist? 
GO TO 11 Repair the harness or connector.
11  CHECK DAYTIME LIGHT RELAY 1 
Check daytime light relay 1. Refer to [Daytime Light Relay Circuit Check ]
Does continuity exist? 
Replace IPDM E/R. Refer to [IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM): REMOVAL AND INSTALLATION ]. Replace daytime light relay 1.