LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2012 >> Equator Base >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Lighting Systems >> Diagnostic Information and Procedures >> Headlamp (LO) Circuit Check >> Diagnosis Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnosis Procedure

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
1  CHECK HEADLAMP (LO) FUSES 
  1. Turn the ignition switch OFF.
  2. Check that the following fuses are not open.
G00535694

Is the fuse open? 		 Repair the harness and replace the fuse. GO TO 2
2  CHECK HEADLAMP (LO) OUTPUT VOLTAGE 
  1. Turn the ignition switch OFF.
G06443453G00535695Courtesy 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.
G06443453G00535695Courtesy of SUZUKI OF AMERICA CORP.

Is battery voltage present? 		 GO TO 8 CHECK HEADLAMP (LO) CIRCUIT FOR OPEN GO TO 3
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).
G06443454G00535696
G06443454G00535696

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.
4  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.
5  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.
G00512508G00512509
G00512508G00512509

Does continuity exist? 		 GO TO 6 Repair the harnesses or connectors.
6  CHECK DAYTIME LIGHT RELAY 2 GROUND CIRCUIT 
Check continuity between daytime light relay 2 harness connector and ground.
G00535697

Does continuity exist? 		 GO TO 7 Repair the harness or connector.
7  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.
8  CHECK FRONT HEADLAMP (LO) GROUND CIRCUIT 
Check continuity between the front headlamp harness connector terminal 2 and ground.
G00535698G00535699
G00535698G00535699

Does continuity exist? 		 Inspect the headlamp bulb. Repair the harness.
9  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.
G00535700

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.
G00535701

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.
scientia non olet · About LEMON Manuals