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Home >> Lincoln >> 2006 >> Navigator 2WD V8-5.4L VIN 5 >> Repair and Diagnosis >> Instrument Panel, Gauges and Warning Indicators >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Tests - Instrument Cluster and Panel Illumination >> Test E: A Single Illumination Source Is Inoperative

Test E: A Single Illumination Source Is Inoperative

PINPOINT TEST E: A SINGLE ILLUMINATION SOURCE IS INOPERATIVE


E1:






E1 Continued:






E2:






Normal Operation

Expedition
The instrument panel dimmer switch generates a variable pulse width modulated (PWM) voltage which is distributed to the instrument panel switches on circuit 19 (LB/RD). The instrument panel switches are grounded through circuit 57 (BK). The DVD player is grounded through circuit 694 (BK/LG).

Navigator
The instrument panel dimmer switch generates a pulse width modulated (PWM) voltage which is sent to the instrument cluster on circuit 505 (GY/YE). The instrument cluster distributes the PWM voltage to the instrument panel switches through circuit 235 (RD/BK), or circuit 19 (LB/RD). The instrument panel switches are grounded through circuit 57 (BK). The DVD player is grounded through circuit 694 (BK/LG).

Possible Causes
- circuit 19 (LB/RD) open
- circuit 57 (BK) open
- circuit 235 (RD/BK) open
- circuit 505 (GY/YE) open
- circuit 694 (BK/LG) open
- illumination source
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