Warning Devices — Pinpoint Tests (Focus 1)

A1: CHECK INCOMING VOLTAGE FROM HEADLIGHT SWITCH

1Disconnect the C1000 Central Timer Module (CTM).

2Set the headlight switch to the "PARKING LIGHTS" position.

3Set the headlight switch to the "LOW BEAM" position.

4Using a digital multimeter, measure the voltage between pin 7 of the CTM module C1000 and ground.

• Is the voltage greater than 10V in both switch positions?

→ Yes

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

→ No

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

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

1Using a digital multimeter, measure the voltage between CJB pin 4, C361, circuit 30S-DD40 (Red/Green), harness side and ground.

• Is the voltage more than 10V?

→ Yes

INSTALL a new CJB. CHECK the system is operating correctly.

→ No

Go to A3

A3: CHECK HEADLIGHT SWITCH CIRCUIT FOR OPEN

1Set the headlight switch to the OFF position.

2Disconnect Headlight Switch - C320.

3Set the headlight switch to the "PARKING LIGHTS" position.

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

5Set the headlight switch to the "LOW BEAM" position.

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

• Is the resistance less than 5 ohms in the PARKING LIGHTS and LOW BEAM positions?

→ Yes

REPAIR electrical circuit 30S-DD40 (red/green). CHECK for proper system operation.

→ No

INSTALL a new headlight switch. CHECK the system for proper operation.