Inspection Procedure 5: Starting Impossible (No initial combution)

COMMENT ON TROUBLE SYMPTOM

Failure is possibly caused by failed starter itself or failed related circuit.

PROBABLE CAUSE

Failed battery

Failed starter motor

Open/short circuit in starter associated circuit or loose connector contact

Failed inhibitor switch

DIAGNOSIS PROCEDURE

STEP 1: Check battery voltage.

Measure battery voltage at cranking.

OK: 8 V or higher

Q: Is the check result normal?

YES: Go to Step 2

.
NO: Check battery (Refer to GROUP 54A -Battery - On-vehicle Service - Battery Test

STEP 2: MUT-II/III data list

Item 18: Cranking signal

OK:

ON (Ignition switch: ST)

OFF (Ignition switch: ON)

Q: Is the check result normal?

YES: Go to Step 12

.
NO: Go to Step 3

STEP 3: Connector check: B-22 inhibitor switch connector

Q: Is the check result normal?

YES: Go to Step 4

.
NO: Repair.

STEP 4: Perform voltage measurement at B-22 inhibitor switch connector.

Disconnect connector, and measure at the harness side.

Ignition switch: ST

Voltage between terminal No. 10 and earth.

OK: System voltage

Q: Is the check result normal?

YES: Go to Step 7

.
NO: Go to Step 5

STEP 5: Connector check: C-303 ignition switch connector

Q: Is the check result normal?

YES: Go to Step 6

.
NO: Repair.

STEP 6: Check ignition switch.

Check ignition switch (Refer to GROUP 54A - Ignition Switch - Ignition Switch ).

Q: Is the check result normal?

YES:

Check intermediate connector C-106, and repair if necessary. If intermediate connector is normal, check and repair harness between B-22 (terminal No. 10) inhibitor switch connector and C-303 (terminal No. 5) ignition switch connector.

Check power supply line for open/short circuit.

NO: Replace ignition switch.

STEP 7: Check inhibitor switch.

Check inhibitor switch (Refer to GROUP 23A - On-vehicle Service - Essential Service ).

Q: Is the check result normal?

YES: Go to Step 8

.
NO: Replace inhibitor switch.

STEP 8: Connector check: B-19 intermediate connector.

Q: Is the check result normal?

YES:

Go to Step 9 .

NO: Repair

STEP 9: Check harness between B-22 (terminal No. 9) inhibitor switch connector and B-19 (terminal No. 3) intermediate connector.

Check output line for open/short circuit.

Q: Is the check result normal?

YES: Go to Step 10

.
NO: Repair.

STEP 10: Check harness between B-19 (terminal No. 3) intermediate connector and B-26 (terminal No. 1) starter connector.

Check output line for open/short circuit.

Q: Is the check result normal?

YES: Go to Step 11

.
NO: Repair.

STEP 11: Connector check: C-111 engine-A/T-ECU connector

Q: Is the check result normal?

YES:

Check and repair harness between B-19 (terminal No. 3) intermediate connector and C-111 (terminal No. 58) engine-A/T-ECU connector.

Check output line for open/short circuit.

NO: Repair.

STEP 12: Connector check: B-26 starter connector

Q: Is the check result normal?

YES:

Go to Step 13 .

NO: Repair.

STEP 13: Perform voltage measurement at B-26 starter connector.

Disconnect connector, and measure at the harness side.

Ignition switch: ST

Voltage between terminal No. 1 and earth.

OK:

System voltage (Selector lever position: P or N)

1 V or less (Selector lever position: Other than P or N)

Q: Is the check result normal?

YES: Go to Step 14

.
NO:

Check intermediate connector B-19, and repair if necessary. If intermediate connector is normal, check and repair harness between B-22 (terminal No. 9) inhibitor switch connector and B-26 (terminal No. 1) starter connector.

Check output line for open/short circuit.

STEP 14: Connector check: B-25 starter connector

Q: Is the check result normal?

YES:

Go to Step 15 .

NO: Repair.

STEP 15: Perform voltage measurement at B-25 starter connector.

Disconnect connector, and measure at the harness side.

Voltage between terminal No. 1 and earth.

OK: System voltage

Q: Is the check result normal?

YES:

Go to Step 16 .

NO:

Check and repair harness between B-25 (terminal No. 1) starter connector and battery.

Check power supply line for open/short circuit.

STEP 16: Connector check: C-303 ignition switch connector, B-26 starter connector

Q: Is the check result normal?

YES: Go to Step 17

.
NO: Repair.

STEP 17: Check harness between C-303 (terminal No. 5) ignition switch connector and B-22 (terminal No. 10) inhibitor switch connector

NOTE: Before checking harness, check intermediate connector C-106, and repair if necessary.

Check power supply line for damage.

Q: Is the check result normal?

YES: Go to Step 18

.
NO: Repair

STEP 18: Check harness between B-22 (terminal No. 9) inhibitor switch connector and B-26 (terminal No. 1) starter connector.

NOTE: Before checking harness, check intermediate connector B-19, and repair if necessary.

Check output line for damage.

Q: Is the check result normal?

YES: Go to Step 19

.
NO: Repair

STEP 19: Check harness between B-25 (terminal No. 1) starter connector and battery.

Check power supply line for damage.

Q: Is the check result normal?

YES: Replace starter.
NO: Repair.


Inspection Procedure 5: Starting Impossible (No initial combution)

COMMENT ON TROUBLE SYMPTOM Failure is possibly caused by failed starter itself or failed related circuit.
PROBABLE CAUSE Failed battery Failed starter motor Open/short circuit in starter associated circuit or loose connector contact Failed inhibitor switch
	DIAGNOSIS PROCEDURE

	STEP 1: Check battery voltage. Measure battery voltage at cranking. OK: 8 V or higher Q: Is the check result normal? YES: Go to Step 2 . NO: Check battery (Refer to GROUP 54A -Battery - On-vehicle Service - Battery Test ).
	STEP 2: MUT-II/III data list Item 18: Cranking signal OK: ON (Ignition switch: ST) OFF (Ignition switch: ON) Q: Is the check result normal? YES: Go to Step 12 . NO: Go to Step 3 .
	STEP 3: Connector check: B-22 inhibitor switch connector
	Q: Is the check result normal? YES: Go to Step 4 . NO: Repair.
	STEP 4: Perform voltage measurement at B-22 inhibitor switch connector.
	Disconnect connector, and measure at the harness side. Ignition switch: ST Voltage between terminal No. 10 and earth. OK: System voltage Q: Is the check result normal? YES: Go to Step 7 . NO: Go to Step 5 .
	STEP 5: Connector check: C-303 ignition switch connector
	Q: Is the check result normal? YES: Go to Step 6 . NO: Repair.
	STEP 6: Check ignition switch.
	Check ignition switch (Refer to GROUP 54A - Ignition Switch - Ignition Switch ). Q: Is the check result normal? YES: Check intermediate connector C-106, and repair if necessary. If intermediate connector is normal, check and repair harness between B-22 (terminal No. 10) inhibitor switch connector and C-303 (terminal No. 5) ignition switch connector. Check power supply line for open/short circuit. NO: Replace ignition switch.
	STEP 7: Check inhibitor switch. Check inhibitor switch (Refer to GROUP 23A - On-vehicle Service - Essential Service ). Q: Is the check result normal? YES: Go to Step 8 . NO: Replace inhibitor switch.
	STEP 8: Connector check: B-19 intermediate connector.
	Q: Is the check result normal? YES: Go to Step 9 . NO: Repair
	STEP 9: Check harness between B-22 (terminal No. 9) inhibitor switch connector and B-19 (terminal No. 3) intermediate connector.
	Check output line for open/short circuit. Q: Is the check result normal? YES: Go to Step 10 . NO: Repair.
	STEP 10: Check harness between B-19 (terminal No. 3) intermediate connector and B-26 (terminal No. 1) starter connector.
	Check output line for open/short circuit. Q: Is the check result normal? YES: Go to Step 11 . NO: Repair.
	STEP 11: Connector check: C-111 engine-A/T-ECU connector
	Q: Is the check result normal? YES: Check and repair harness between B-19 (terminal No. 3) intermediate connector and C-111 (terminal No. 58) engine-A/T-ECU connector. Check output line for open/short circuit. NO: Repair.
	STEP 12: Connector check: B-26 starter connector
	Q: Is the check result normal? YES: Go to Step 13 . NO: Repair.
	STEP 13: Perform voltage measurement at B-26 starter connector.
	Disconnect connector, and measure at the harness side. Ignition switch: ST Voltage between terminal No. 1 and earth. OK: System voltage (Selector lever position: P or N) 1 V or less (Selector lever position: Other than P or N) Q: Is the check result normal? YES: Go to Step 14 . NO: Check intermediate connector B-19, and repair if necessary. If intermediate connector is normal, check and repair harness between B-22 (terminal No. 9) inhibitor switch connector and B-26 (terminal No. 1) starter connector. Check output line for open/short circuit.
	STEP 14: Connector check: B-25 starter connector
	Q: Is the check result normal? YES: Go to Step 15 . NO: Repair.
	STEP 15: Perform voltage measurement at B-25 starter connector.
	Disconnect connector, and measure at the harness side. Voltage between terminal No. 1 and earth. OK: System voltage Q: Is the check result normal? YES: Go to Step 16 . NO: Check and repair harness between B-25 (terminal No. 1) starter connector and battery. Check power supply line for open/short circuit.
	STEP 16: Connector check: C-303 ignition switch connector, B-26 starter connector
	Q: Is the check result normal? YES: Go to Step 17 . NO: Repair.
	STEP 17: Check harness between C-303 (terminal No. 5) ignition switch connector and B-22 (terminal No. 10) inhibitor switch connector
	NOTE: Before checking harness, check intermediate connector C-106, and repair if necessary. Check power supply line for damage. Q: Is the check result normal? YES: Go to Step 18 . NO: Repair
	STEP 18: Check harness between B-22 (terminal No. 9) inhibitor switch connector and B-26 (terminal No. 1) starter connector.
	NOTE: Before checking harness, check intermediate connector B-19, and repair if necessary. Check output line for damage. Q: Is the check result normal? YES: Go to Step 19 . NO: Repair
	STEP 19: Check harness between B-25 (terminal No. 1) starter connector and battery.
	Check power supply line for damage. Q: Is the check result normal? YES: Replace starter. NO: Repair.