Interior Lighting — Pinpoint Tests (Focus 1)

A1: CHECKING THE COMPLAINT

1Check the operation of the interior lights in the ON and 12 SEC positions.

• Interior light does not work in both positions?

→ Yes

Go to A16

→ No

If the lamp does not work in position 12 SEC Go to A2

If the lamp does not work in the ON position, Go to A11

A2: CHECKING THE INPUT SIGNAL FROM THE INTERIOR LAMP SWITCHES

NOTE:Make sure the front interior light switch is set to position 12 SEC.

1Check the operation of all door sill lighting lamps.

• Door sill lights not working in only one door?

→ Yes

If the interior light switch in the driver's door does not work, Go to A3

If the interior light switch in any other door does not work, Go to A6

→ No

Go to A11

A3: CHECKING THE SIGNAL FROM THE INTERIOR LAMP SWITCH LOCATED IN THE DRIVER'S DOOR SENT TO THE MODULE

1Disconnect C51 CTM.

2Measure the resistance between pin 62 (left-hand drive version) or pin 63 (right-hand drive version) of the C51 CTM connector, component side, and ground. Take readings with the interior lamp door switch pressed (door closed) and released (door open).

• Is the resistance less than 5 ohms (door open) and more than 10,000 ohms (door closed)?

→ Yes

INSTALL the new CTM module. CHECK that the system is operating correctly.

→ No

Go to A4

A4: CHECK THE ELECTRICAL CIRCUIT OF THE PIN IN THE DRIVER'S DOOR FOR AN OPEN CIRCUIT

1Disconnect the Driver's Door Interior Light Switch C685 (left-hand drive version), C684 (right-hand drive version).

2Measure the resistance between pin 1 of connector C685 (left-hand drive version) or pin 1 of C684 (right-hand drive version) of the interior lamp switch, harness side, and pin 62 (left-hand drive version) or pin 63 (right-hand drive version) of C51 of the central timer module, harness side.

• Resistance less than 5 ohms?

→ Yes

Go to A5

→ No

REPAIR electrical circuit 31S-GL16 (black/blue) for left-hand drive or electrical circuit 31S-GL9 (black/yellow) for right-hand drive. CHECK for proper system operation.

A5: CHECK THE GROUND CIRCUIT OF THE INTERIOR LAMP SWITCH LOCATED IN THE DRIVER'S DOOR FOR AN OPEN CIRCUIT

1Measure the resistance between pin 2 of connector C685, circuit 31-GL9 (black) (left-hand drive version) or pin 2 of connector C684, circuit 31-GL16 (black) (right-hand drive version) of the interior lamp switch, harness side, and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new driver's door interior lamp switch. CHECK the system for proper operation.

→ No

REPAIR electrical circuit 31-GL9 (black) (left-hand drive version) or electrical circuit 31-GL16 (black) (right-hand drive version). CHECK for proper system operation.

A6: CHECKING THE DOOR LIGHT SWITCH SIGNAL SENT TO THE MODULE

1Disconnect C51 CTM.

2Measure the resistance between pin 64, harness side (rear doors) or pin 62, harness side (passenger door, right-hand drive version) or pin 63, harness side (passenger door, left-hand drive version) of the C51 CTM connector and ground. Take the readings with the door interior lamp switch pressed (door closed) and released (door open).

• Is the resistance greater than 10,000 ohms with the switch pressed and less than 5 ohms with the switch not pressed?

→ Yes

INSTALL new CTM. CHECK system operation.

→ No

Go to A7

A7: CHECK THE ELECTRICAL CIRCUITS OF THE DOOR INTERIOR LIGHT SWITCHES FOR OPEN CIRCUIT

1Disconnect C686, C687, C684 and C685 interior lamp switches.

2Measure the resistance between pin 64 of connector C51 CTM (rear doors) and pin 1 of connector C687 of the room lamp switch (left rear door), or pin 1 of connector C686 of the room lamp switch (right rear door). For the front passenger door, between pin 62 of connector C51CTM (right-hand drive version) or pin 63 (left-hand drive version) and pin 1 of connector C685 (right-hand drive version) or pin 1 of connector C686 (left-hand drive version) of the room lamp switch.

• Resistance less than 5 ohms?

→ Yes

Go to A8

→ No

REPAIR circuit 31S-GL16 (BLK/BLK) for passenger door (LHD version) or circuit 31S-GL9 (BLK/YELK) for passenger door (RHD version). For rear doors, repair circuit 31S-GL19 (BLK/GREEN) (RHD rear door) or circuit 31S-GL12 (BLK/ORANGE) (RHD rear door). CHECK for proper system operation.

A8: CHECK THE ELECTRICAL GROUND CIRCUIT OF THE INTERIOR LAMP DOOR SWITCH FOR OPEN

1Measure the resistance between pin 1 of connector C684 (passenger door, left-hand drive version) or pin 1 of connector C685 (passenger door, right-hand drive version) or pin 1 of connector C686 (right rear door) or pin 1 of connector C687 (left rear door) of the interior lamp switch, on the wiring side, and ground.

• Resistance less than 5 ohms?

→ Yes

Go to A9

→ No

REPAIR circuit 31-GL9 (black) (right-hand drive version) or circuit 31-GL16 (black) (left-hand drive version). For rear doors, REPAIR circuit 31-GL19 (black) (right rear door) or circuit 31-GL12 (black) (left rear door). CHECK for proper system operation.

A9: CHECK THE FRONT INTERIOR LAMP CIRCUIT FOR OPEN

1Disconnect C899 front interior light.

2Disconnect the C890 front interior light.

3Set the front interior light switch to position 12 SEC.

4Measure the resistance between pin 1 of connector C899 front interior lamp and pin 1 of connector C890 front interior lamp (element side).

• Resistance less than 5 ohms?

→ Yes

Go to A10

→ No

INSTALL a new front interior lamp. CHECK the system for proper operation.

A10: CHECK GROUND CIRCUIT 31-LC7 (BLACK) FRONT INTERIOR LAMP FOR OPEN

1Measure the resistance between pin 2 of connector C890 front interior lamp, circuit 31-LC7 (black), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new interior lamp switch. CHECK the system for proper operation.

→ No

REPAIR circuit 31-LC7 (black). CHECK for proper system operation.

A11: CHECKING VOLTAGE IN ELECTRICAL CIRCUIT 29-LC7 (ORANGE-BLUE)

1Disconnect C899 front interior light.

2Measure the voltage between pin 1 of connector C899 front interior lamp, circuit 29-LC7 (OR/BU), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to A15

→ No

Go to A12

A12: CHECKING ELECTRICAL CIRCUIT 29-LC7 (ORANGE/BLUE) FOR OPEN

1Disconnect the Battery Saver Relay.

2Measure the resistance between pin 5 of the battery saver relay and pin 1 of connector C899, circuit 29-LC7 (orange/blue), harness side.

• Resistance less than 5 ohms?

→ Yes

Go to A13

→ No

REPAIR circuit 29-LC7 (orange/blue). CHECK for proper system operation.

A13: CHECKING POWER SUPPLY TO BATTERY SAVING RELAY

1Measure the voltage between pin 3 of the battery saver relay, circuit 30-DA1 (red), wiring side, and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to A14

→ No

CHECK fuse 35 (7.5A) and fuse 7 (40A). If necessary, INSTALL a new fuse(s). If both fuses are good, REPAIR circuit 30-DA1 (red). CHECK for proper system operation.

A14: CHECKING THE STATUS OF THE BATTERY SAVING DEVICE RELAY

1Perform a battery saver relay component test. For more information, refer to Testing the Components in this section..

• Is the relay working properly?

→ Yes

INSTALL the new CTM module. CHECK that the system is operating correctly.

→ No

INSTALL a new battery saver relay. CHECK the system for proper operation.

A15: CHECKING THE GROUND CIRCUIT OF THE FRONT INTERIOR LAMP

1Disconnect the C890 front interior light.

2Measure the resistance between pin 2 of connector C890 front interior lamp, circuit 31-LC7 (black), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new front interior lamp. CHECK the system for proper operation.

→ No

REPAIR circuit 31-LC7 (black). CHECK for proper system operation.

A16: CHECKING THE CONDITION OF THE FRONT INTERIOR LIGHT LAMP

1Remove and inspect the front interior light bulb.

• Is the front interior light bulb working properly?

→ Yes

Go to A17

→ No

INSTALL a new front interior light bulb. CHECK the system for proper operation.

A17: CHECKING VOLTAGE IN ELECTRICAL CIRCUIT 29-LC7 (ORANGE-BLUE)

1Disconnect C899 front interior light.

2Measure the voltage between pin 1 of connector C899 front interior lamp, circuit 29-LC7 (OR/BU), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

INSTALL a new front interior lamp. CHECK the system for proper operation.

→ No

Go to A18

A18: CHECKING ELECTRICAL CIRCUIT 29-LC7 (ORANGE/BLUE) FOR OPEN

1Disconnect the Battery Saver Relay.

2Measure the resistance between pin 5 of the battery saver relay and pin 1 of the front interior lamp connector C899, circuit 29-LC7 (orange/blue), harness side,

• Resistance less than 5 ohms?

→ Yes

Go to A19

→ No

REPAIR circuit 29-LC7 (orange/blue). CHECK for proper system operation.

A19: CHECKING POWER SUPPLY TO BATTERY SAVING RELAY

1Measure the voltage between pin 3 of the battery saver relay, circuit 30-DA1 (red), wiring side, and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to A20

→ No

CHECK fuse 35 (7.5A) and fuse 7 (40A). If necessary, INSTALL a new fuse(s). If both fuses are good, REPAIR circuit 30-DA1 (red). CHECK for proper system operation.

A20: CHECKING THE STATUS OF THE BATTERY SAVING DEVICE RELAY

1Perform a battery saver relay component test. For more information, refer to Testing the Components in this section..

• Is the relay working properly?

→ Yes

INSTALL the new CTM module. CHECK that the system is operating correctly.

→ No

INSTALL a new battery saver relay. CHECK the system for proper operation.

B1: CHECKING THE OPERATION OF THE FRONT INTERIOR LAMP

1Visually check that the front interior light is on.

• Does the front interior light come on?

→ Yes

Go to B2

→ No

Go to A11

B2: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT 29-LC17 (ORANGE-YELLOW)

1Measure the voltage between pin 1 of the rear interior lamp connector C892, circuit 29-LC17 (OR/YEL), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to B3

→ No

REPAIR circuit 29-LC17 (orange/yellow). CHECK for proper system operation.

B3: CHECKING THE ON AND 12 SEC MODES OF THE REAR INTERIOR LAMP

1Check the operation of the rear interior light in the ON and 12 SEC modes.

• Both modes do not work?

→ Yes

CHECK the condition of the bulb. If the bulb is burned out, INSTALL a new bulb. If the bulb is good, INSTALL a new rear interior lamp. CHECK the system is operating correctly.

→ No

If the ON position does not work, Go to B4

If SEC Regulation 12 does not work, Go to B5

B4: CHECKING ELECTRICAL CIRCUIT 31-LC17 (BLACK) FOR OPENINGS

1Disconnect C891 rear interior light.

2Measure the resistance between pin 2 of connector C891 rear interior lamp, circuit 31-LC17 (black), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new rear interior light. CHECK the system for proper operation.

→ No

REPAIR electrical circuit 31-LC17 (black). CHECK for proper system operation.

B5: CHECKING ELECTRICAL CIRCUIT 31S-LC17 (BLACK/YELLOW) FOR OPENINGS

1Disconnect C891 rear interior light.

2Make sure the door is open.

3Measure the resistance between pin 1 of connector C891 rear interior lamp, circuit 31S-LC17 (BK/YE), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new rear interior light. CHECK the system for proper operation.

→ No

REPAIR electrical circuit 31S-LC17 (black/yellow). CHECK proper system operation.

C1: CHECKING THE VOLTAGE IN THE ELECTRICAL CIRCUIT OF THE LUGGAGE COMPARTMENT LAMP 29-LB25 (ORANGE-BLUE) OR 29-LB6 (ORANGE-YELLOW)

1Enter the OFF position.

2Disconnect the C820 or C887 luggage compartment lamps (Station wagon).

3Measure the voltage between pin 2 of connector C820 luggage compartment lamp, circuit 29-LB25 (OR/BU) (except wagon), or pin 1 of connector C887, circuit 29-LB6 (OR/YE) (wagon only), harness side and ground.

• Is the voltage greater than 10 V?

→ Yes

Go to C2

→ No

REPAIR circuit 29-LB25 (orange/blue) (except wagon) or circuit 29-LB6 (orange/yellow) (wagon only). CHECK for proper system operation.

C2: CHECKING THE GROUNDING OF THE LUGGAGE COMPARTMENT LAMP

NOTE:The tailgate/trunk lid must be open

1Disconnect C888 luggage compartment light bulbs (station wagon only).

2Disconnect C800 or C798 tailgate/trunk switch (wagon only).

3Measure the resistance between pin 1 of connector C820, luggage compartment lamp, circuit 31S-LB25A (BK/OG) (except wagon), or pin 1 of connector C888, circuit 31S-LB6 (BK/YE) (wagon only), and pin 4 of connector C800 (except wagon) or C798 (wagon only), circuit 31S-LB1 (BK/BU).

• Resistance less than 5 ohms?

→ Yes

Go to C3

→ No

REPAIR electrical circuit 31S-LB25A (black/orange) (except wagon), or 31S-LB6 (black/yellow) (wagon only) and electrical circuit 31S-LB1 (black/blue).

C3: CHECK ELECTRICAL CIRCUIT 31-GL20 (BLACK) FOR OPENINGS

1Measure the resistance between pin 3 of the luggage compartment lamp switch connector C798, circuit 31-GL20 (black), harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new luggage compartment light. CHECK the system for proper operation.

→ No

REPAIR electrical circuit 31-GL20 (black). CHECK for proper system operation.

D1: CHECKING THE POWER SUPPLY OF THE FRONT INTERIOR LAMP

1Set the front interior light switch to the ON position.

• Does the front interior light work?

→ Yes

CHECK the condition of the bulb. If the bulb is burned out, INSTALL a new bulb. If the bulb is good, INSTALL a new rear interior lamp. CHECK the system is operating correctly.

→ No

Go to D2

D2: CHECKING THE GROUNDING OF THE FRONT INTERIOR LAMP

1Disconnect C890 (except wagon) or C888 (wagon only) front interior light.

2Measure the resistance between pin 2 of connector C890, circuit 31-LC7 (Black), or pin 2 of connector C888, circuit 31-LB6 (Black), front room lamp, harness side and ground.

• Resistance less than 5 ohms?

→ Yes

INSTALL a new front interior lamp. CHECK the system for proper operation.

→ No

REPAIR electrical circuit 31-LC7 (black) or 31-LB6 (black). CHECK for proper system operation.