Warning Devices — Pinpoint Tests

A1: CHECK THE INPUT VOLTAGE FROM THE HEADLIGHT SWITCH

1 Disconnect the Central Timer Module (CTM) C1000.

2 Set the headlight switch to "PARKING LIGHTS".

3 Set the headlight switch to "NEAR LIGHT!.

4 Using a DMM, measure the voltage between C1000 pin 7 and "weight".

• Is the voltage over 10V in both switch positions?

→ Yes

INSTALL a new CTM. CHECK the system is working properly.

→ No

If voltage is less than 10V at one switch position, INSTALL a new headlight switch. If the voltage is less than 10 V in both positions. Go to A2 CHECK the system is working properly.

A2: CHECK CIRCUIT VOLTAGE 30S-DD40 (RED/GREEN)

1 Using a digital multimeter, measure the voltage between pin 4 C361 of the central junction box (CJB), electrical circuit 30S-DD40 (red/green), from the wiring side and "weight".

• Is the voltage over 10 V?

→ Yes

INSTALL the new CJB. CHECK the system is working properly.

→ No

Go to A3

A3: INSPECT HEADLIGHT SWITCH CIRCUIT FOR OPEN

1 Set the headlight switch to the OFF position.

2 Disconnect Headlight Switch - C320.

3 Set the headlight switch to "PARKING LIGHTS".

4 Using a DMM, measure the resistance between pin 4 and pin 5 of the headlight switch on the wiring side.

5 Set the headlight switch to "DOWN LIGHT".

6 Using a DMM, measure the resistance between pin 4 and pin 5 of the headlight switch on the wiring side.

• Resistance is less than 5 ohms at the positions "PARKING LIGHTS" And "DOWN LIGHT"?

→ Yes

REPAIR circuit 30S-DD40 (red/green). CHECK the system is working properly.

→ No

INSTALL a new headlight switch. CHECK the system is working properly.