Detailed Flow
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter motor and alternator test segments must be done as a set from start to finish.
DIAGNOSIS PROCEDURE CHART
| Step | Action | YES | NO |
|---|---|---|---|
| 1 | DIAGNOSIS WITH STARTING/CHARGING SYSTEM TESTER Perform the starting system test with Starting/Charging System Tester (J-44373). For details and operating instructions, refer to Technical Service Bulletin. Test result |
GO TO 2 | GO TO 5 |
| 2 | CRANKING CHECK Check that the starter motor operates properly. Does the engine crank normally? |
GO TO 3 | GO TO 4 |
| 3 | ENGINE START CHECK Check that the engine starts. Does the engine start? |
Starter motor is OK. Inspection End. | Perform further diagnosis of engine mechanical or engine control system. Refer to section 1A and 1D. Once resolved, perform battery test again. |
| 4 | STARTER MOTOR ACTIVATION Check that the starter motor operates. Does the starter motor turn? |
Check ring gear and starter motor drive pinion. Once resolved, perform battery test again. | GO TO 7 |
| 5 | COMPARISON BETWEEN ENGINE COOLANT AND CRANKING VOLTAGE Compare the engine coolant temperature and verify the cranking voltage is within specification. Minimum Specification of Cranking Voltage Referencing Coolant Temperature Refer to MINIMUM SPECIFICATION CHART Is the voltage less than the specified value? |
GO TO 7 | GO TO 6 |
| 6 | STARTER OPERATION Check the starter operation. Does the starter motor turn smoothly? |
Starter motor is OK. Inspection End. | GO TO 7 |
| 7 | "B" TERMINAL CIRCUIT INSPECTION Check "B" terminal circuit. Refer to [B TERMINAL CIRCUIT CHECK ]. Is "B" terminal circuit normal? |
GO TO 8 | Repair as needed. |
| 8 | "S" CONNECTOR CIRCUIT INSPECTION Check "S" connector circuit. Refer to [S CONNECTOR CIRCUIT CHECK [QR25DE] ] (QR25DE) or [S CONNECTOR CIRCUIT CHECK [VQ40DE] ] (VQ40DE). Is "S" connector circuit normal? |
GO TO 9 | Repair as needed. |
| 9 | ENGINE ROTATION STATUS Check that the engine can be rotated by hand. Does the engine turn freely by hand? |
Replace starter motor. Refer to [STARTER MOTOR: REMOVAL AND INSTALLATION (QR25DE) ] or [STARTER MOTOR: REMOVAL AND INSTALLATION (VQ40DE) ]. | Perform further diagnosis of engine mechanical or powertrain mechanism. Refer to section 1D, 5A or 5B. Once resolved, perform battery test again. Refer to Technical Service Bulletin. |
MINIMUM SPECIFICATION CHART
| Engine coolant temperature [°C (°F)] | Voltage [V] |
| -30 to -20 (-22 to -4) | 8.6 |
| -19 to -10 (-2 to 14) | 9.1 |
| -9 to 0 (16 to 32) | 9.5 |
| More than 1 (More than 34) | 9.9 |