Launch system pinpoint tests

A1: BATTERY TEST

1 Test battery using FDS 2000. See Section 414-00 for more information.

• Is the battery OK?

→ Yes

Go to A2 Go to PINPOINT TEST A

→ No

Install a new battery. Check the correct operation of the system.

A2: STARTER RELAY CHECK

1 Disconnect the starter relay.

2 Perform element check for ISO minirelay. For more information, refer to the wiring diagram.

• Is the relay OK?

→ Yes

Go to A3 Go to PINPOINT TEST A

→ No

Install a new starter relay. Check the correct operation of the system.

A3: CHECKING THE VOLTAGE SUPPLY TO THE 50-BB17 STARTER RELAY CIRCUIT (GRAY ORANGE)

1 Using a digital multimeter, measure the voltage between pin 3 of the starter relay on the wiring harness side and "weight".

• Is the voltage over 10V?

→ Yes

Go to A4 Go to PINPOINT TEST A

→ No

Repair electrical circuit 50-BB17 (gray-orange). Check the correct operation of the system.

A4: 50-BB12 ELECTRICAL CIRCUIT CHECK (GRAY) FOR A BREAK

1 Enter the OFF position.

2 Disconnect Line connector C80.

3 Using a digital multimeter, measure the resistance between pin 12 of connector C80, circuit 50-BB12 (gray), and pin 5 of the starter relay.

• Is the resistance less than 5 ohms?

→ Yes

Go to A5 Go to PINPOINT TEST A

→ No

Repair circuit 50-BB12 (gray). Check the correct operation of the system.

A5: CHECKING THE POWER SUPPLY TO THE STARTER

1 Connect the Starter Relay.

2 Using a digital multimeter, measure the voltage between starter pin 30 on the starter side and battery positive with the ignition switch in position III.

• Is the voltage less than 0.5 V?

→ Yes

If the vehicle is equipped with an automatic transaxle, Go to A6 Go to PINPOINT TEST A

Repair circuit 50-BB12 (gray). Check the correct operation of the system.

→ No

Clean and tighten all battery positive circuit connections. Check the correct operation of the system. If there is a problem, install a new positive battery cable.

A6: CHECKING THE OPERATION OF THE 50S-BB12 ELECTRICAL CIRCUIT (GRAY) I 50-BB14 (GRAY-RED) GEAR SHIFT MODE SWITCHES (AUTOMATIC GEARBOX WITH DRIVE AXLE)

1 Using a digital multimeter, measure the resistance between pin 6, circuit 50S-BB12 (gray), and pin 9, electrical circuit 50-BB14 (grey-red), connector C438 of the shift mode switch, on the side of the switch.

• Is the resistance less than 5 ohms?

→ Yes

Repair electrical circuits 50S-BB12 (gray) or 50-BB14 (gray-red). Check the correct operation of the system.

→ No

Adjust the shift mode switch. If there is a problem, install a new shift mode sensor.

B1: CHECKING PATS STATUS

1 Watch the PATS indicator light.

• Does the warning light flash when you try to start the engine?

→ Yes

Malfunction in the PATS system. See Section 419-01A / 419-01B for more information.

→ No

Go to B2 Go to PINPOINT TEST B

B2: CHECKING OPERATION OF THE STARTER RELAY

1 Disconnect the starter relay.

2 Perform element check for ISO minirelay. For more information, refer to the wiring diagram.

• Is the relay OK?

→ Yes

Go to B3 Go to PINPOINT TEST B

→ No

Install a new starter relay. Check the correct operation of the system.

B3: BATTERY STATUS CHECK

1 Test battery using FDS 2000. See Section 414-00 for more information.

• Is the battery OK?

→ Yes

Go to B4 Go to PINPOINT TEST B

→ No

Install a new battery. Check the correct operation of the system.

B4: FUSE CHECK 10 (10A) and 8 (30A).

1 CHECK Fuse 10 (10A).

2 CHECK Fuse 8 (30A).

3 Check fuses 10 (10A) and 8 (30A).

• Are the fuses OK?

→ Yes

Go to B5 Go to PINPOINT TEST B

→ No

Install a new fuse if necessary (And). If the fuse (And) fails again, check the electrical circuit for a short circuit.

B5: CHECKING THE SWITCHED POWER SUPPLY TO THE STARTER RELAY

1 Using a digital multimeter, measure the voltage between pin 1 of the starter relay, harness side, and "weight" when the ignition switch is in position III.

• Is the voltage over 10V?

→ Yes

Go to B6 Go to PINPOINT TEST B

→ No

Go to B7 Go to PINPOINT TEST B

B6: PATS ELECTRICAL CIRCUIT CHECK FOR ELECTRICAL CIRCUIT 31S-BB16 STARTER RELAY

1 Enter the OFF position.

2 Disconnect the C415 PCM.

3 Using a digital multimeter, measure the resistance between pin 2 of the starter relay, circuit 31S-BB16 (black and red), and pin 27 of the C415 PCM connector, on the wiring harness side

• Is the resistance less than 5 ohms?

→ Yes

Malfunction in the PATS system. See Section 419-01A / 419-01B for more information.

→ No

Repair circuit 31S-BB16 (black and red). Check the correct operation of the system.

B7: VOLTAGE CHECK IN THE ELECTRICAL CIRCUIT 30-BB9 (RED) IGNITION SWITCH

1 Disconnect the C456 ignition switch.

2 Using a digital multimeter, measure the voltage between pin 4 of connector C456 of the ignition switch, circuit 30-BB9 (red), on the wiring harness side and "weight"

• Is the voltage over 10V?

→ Yes

Go to B8 Go to PINPOINT TEST B

→ No

Repair circuit 30-BB9 (red). Check the correct operation of the system. If there is a problem, repair or install a new battery junction box.

B8: 15-DA1 ELECTRICAL CIRCUIT CHECK (GREEN YELLOW) FOR A BREAK IN THE CHAIN

1 Using a digital multimeter, measure the resistance between pin 1 of connector C456 of the ignition switch, circuit 15-DA1 (green-yellow), and pin 1 of the starter relay.

• Is the resistance less than 5 ohms?

→ Yes

Install a new ignition switch. Check the correct operation of the system.

→ No

Repair circuit 15-DA1 (green-yellow). Check the correct operation of the system.

C1: STARTER LOAD CHECK

1 Perform starter load test. For more information, refer to Checking the Starter Load found in this section..

• Is the starter OK?

→ Yes

Go to C2 Go to PINPOINT TEST C

→ No

Install a new starter. Check the correct operation of the system.

C2: VOLTAGE DROP CHECK

1 Using a digital multimeter, measure the voltage between starter pin 30 on the starter side and battery positive with the ignition switch in position III.

• Is the voltage less than 0.5 V?

→ Yes

Go to C3 Go to PINPOINT TEST C

→ No

Clean and tighten all battery positive circuit connections. Check the correct operation of the system. If there is a problem, install a new positive battery cable.

C3: ELECTRICAL CIRCUIT CHECK ON "MASS"

1 Using a digital multimeter, measure the voltage between the starter housing and the negative battery terminal with the ignition switch in position III.

• Is the voltage less than 0.5 V?

→ Yes

Run battery and charging system diagnostics. See Section 414-00 for more information.

→ No

Clean and tighten all negative battery circuit connections, starter mountings, and ground wire between body and engine. Check the correct operation of the system. If there is a problem, install a new battery ground wire.