Normal Operation

NOTE:

The smart junction box (SJB) is also known as the generic electronic module (GEM).

When the high beams are turned on, the SJB/GEM routes voltage to the instrument cluster through circuit (BR/R) to illuminate the high beam indicator. The instrument cluster provides the bulb ground through circuit (B/Y).

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
SJB/GEM
Instrument cluster
CAUTION:
- Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

HIGH BEAM INDICATOR PINPOINT TEST 10

PINPOINT TEST 10		THE HIGH BEAM INDICATOR IS NEVER ON
STEP	INSPECTION		ACTION
1	CHECK FOR CORRECT HIGH BEAM OPERATION Turn the headlamp switch to the headlamps ON position. Set the multifunction switch to the high beam position. Do the high beams operate correctly?	Yes	Go to next step.
1		No	See HEADLAMPS to continue diagnosis of the high beams.
2	CHECK FOR VOLTAGE TO THE INSTRUMENT CLUSTER Place the headlamp switch in the HEADLAMPS OFF position. Key in OFF position. Disconnect: Instrument Cluster connector 0922-101. Place the headlamp switch in the HEADLAMPS ON position. Place the multifunction switch in the HIGH BEAM position. Key in ON position. Measure the voltage between the instrument cluster 0922-101 pin 11, circuit (BR/R), harness side and ground. Is the voltage greater than 10 volts?	Yes	Go to step 4.
2		No	Go to next step.
3	CHECK CIRCUIT (BR/R) FOR AN OPEN Key in OFF position. Place the headlamp switch in the HEADLAMPS OFF position. Disconnect: SJB/GEM J-2280a. Measure the resistance between the instrument cluster 0922-101 pin 11, circuit (BR/R), harness side and the SJB/GEM J-2280a pin 21, circuit (BR/R), harness side. Is the resistance less than 5 ohms?	Yes	Go to step 5.
3		No	REPAIR the circuit. TEST the system for normal operation.
4	CHECK THE GROUND TO THE INSTRUMENT CLUSTER Key in OFF position. Measure the resistance between the instrument cluster 0922-102 pin 1, circuit (B/Y), harness side and ground. Is the resistance less than 5 ohms?	Yes	Go to step 6.
4		No	REPAIR the circuit. TEST the system for normal operation.
5	CHECK FOR CORRECT SJB/GEM OPERATION Disconnect all the SJB/GEM connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB/GEM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	INSTALL a new SJB/GEM. See SMART JUNCTION BOX (SJB) . TEST the system for normal operation.
5		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
6	CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION Disconnect all the instrument cluster connectors. Check for: corrosion damaged pins pushed-out pins incorrectly installed bulb sockets burnt-out bulbs Connect all the instrument cluster connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	INSTALL a new instrument cluster. See INSTRUMENT CLUSTER . TEST the system for normal operation.
6		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.