Starting System: Diagnosis — Suzuki Equator I (2008-2012)

Diagnosis Procedure

CAUTION

Perform diagnosis under the condition that the engine cannot start by the following procedure. Remove fuel pump fuse. Crank or start the engine (where possible) until the fuel pressure is depleted.

DIAGNOSIS PROCEDURE CHART Step Action YES NO 1 CHECK TERMINAL 2 POWER SUPPLY VOLTAGE Turn ignition switch OFF. Make sure that starter motor connector E210 terminal 2 connection is clean and tight. Check voltage between starter motor connector E210 terminal 2 and ground. Is there battery voltage present? GO TO 2 Check harness between battery and starter motor for open circuit. 2 CHECK BATTERY CABLE (VOLTAGE DROP TEST) Shift the transmission into park or neutral. Check voltage between battery positive terminal and starter motor connector E210 terminal 2 while cranking the engine. Is the voltage drop less than 0.2V? GO TO 3 Check harness between the battery and the starter motor for high resistance. 3 CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST) Check voltage between starter motor case and battery negative terminal while cranking the engine. Is the voltage drop less than 0.2V? Terminal 2 circuit is OK. Further inspection necessary. Refer to [ DIAGNOSIS AND REPAIR WORKFLOW ]. Check the starter motor case to engine mounting for high resistance

Scheme 1

Scheme 2

CAUTION

Perform diagnosis under the condition that engine cannot start by the following procedure. Remove fuel pump fuse. Crank or start the engine (where possible) until the fuel pressure is released.

DIAGNOSIS PROCEDURE CHART Step Action YES NO 1 CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT Turn ignition switch OFF. 2. Disconnect starter motor connector E211. 3. Shift transmission into park or neutral. 4. Check voltage between starter motor harness connector E211 terminal 1 and ground with the ignition in START. Is battery voltage present? Magnetic switch circuit is OK. Further inspection necessary. Refer to [ DIAGNOSIS AND REPAIR WORKFLOW ]. GO TO 2 2 CHECK CONNECTOR Turn ignition switch OFF. Check the IPDM E/R harness connector E120 and starter motor harness connector E211 for damage, bent pins and loose connections. Is the inspection result normal? GO TO 3 Repair the terminal and connector. 3 CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect IPDM E/R connector E120 and starter motor connector E211. 2. Check continuity between starter motor harness connector E211 (A) terminal 1 and IPDM E/R harness connector E120 (B) terminal 19. 3. Check continuity between starter motor harness connector E211 (A) terminal 1 and ground. Are the continuity test results as specified? Further inspection necessary. Refer to [ DIAGNOSIS AND REPAIR WORKFLOW ]. Repair the harness

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

CAUTION

Perform diagnosis under the condition that engine cannot start by the following procedure. Remove fuel pump fuse. Crank or start the engine (where possible) until the fuel pressure is released.

DIAGNOSIS PROCEDURE CHART Step Action YES NO 1 CHECK STARTER MOTOR MAGNETIC SWITCH CIRCUIT Turn ignition switch OFF. 2. Disconnect starter motor connector E207. 3. Shift transmission into park or neutral. 4. Check voltage between starter motor harness connector E207 terminal 1 and ground with the ignition in START. Is battery voltage present? Magnetic switch circuit is OK. Further inspection necessary. Refer to [ DIAGNOSIS AND REPAIR WORKFLOW ]. GO TO 2 2 CHECK CONNECTOR Turn ignition switch OFF. Check the IPDM E/R harness connector E120 and starter motor harness connector E207 for damage, bent pins and loose connections. Is the inspection result normal? GO TO 3 Repair the terminal and connector. 3 CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect IPDM E/R connector E120 and starter motor connector E207. 2. Check continuity between starter motor harness connector E207 (A) terminal 1 and IPDM E/R harness connector E120 (B) terminal 19. 3. Check continuity between starter motor harness connector E207 (A) terminal 1 and ground. Are the continuity test results as specified? Further inspection necessary. Refer to [ DIAGNOSIS AND REPAIR WORKFLOW ]. Repair the harness