Diagnosis And Testing - Multi-Function Switch
- Remove multi-function switch (Refer to REMOVAL ).
- Using an ohmmeter, test for continuity/resistance between the terminals of the switch as shown in the MULTI-FUNCTION SWITCH CONTINUITY/RESISTANCE table. Refer to Wiring Diagrams for C1 and C2 connector pin-outs. Refer to (Fig 1) for combination flasher (A) pin-outs.
The switch assembly is mounted over the center of the steering column under the steering column shrouds. Should any function of the switch fail, the entire switch assembly must be replaced.
MULTI-FUNCTION SWITCH CONTINUITY/RESISTANCE
| SWITCH POSITION | MODE | CONTINUITY/RESISTANCE |
|---|---|---|
| TURN SIGNAL/HAZARD SWITCH | RIGHT | CONTINUITY BETWEEN (C1) 2 AND A2 |
| LEFT | CONTINUITY BETWEEN (C1) 1 AND A2 | |
| HAZARD | CONTINUITY BETWEEN (C1) 5 AND A5 CONTINUITY BETWEEN (C1) 1 AND A2 CONTINUITY BETWEEN (C1) 2 AND A2 |
|
| WIPER/WASHER SWITCH | MIST | 1110 Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 |
| WASH | CONTINUITY BETWEEN (C1) 3 AND (C1) 9 | |
| OFF | OPEN BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 1 | 28.25K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 2 | 12.25K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 3 | 6.65K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 4 | 3.95K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 5 | 2.45K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| INTERMITTENT 6 | 1.54K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| LOW | 1.11K Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| HIGH | 680 Ω +/- 5% BETWEEN (C1) 4 AND (C1) 9 | |
| DIMMER SWITCH | DOME DEFEAT/OFF | 99.9K Ω BETWEEN (C2) 8 AND (C2) 9 |
| DIMMER 1 | 43.9K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DIMMER 2 | 23.9K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DIMMER 3 | 14.8K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DIMMER 4 | 9.2K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DIMMER 5 | 5.6K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DIMMER 6 | 3.6K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| FUNERAL MODE | 2K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| DOME LAMP ON | 1K Ω BETWEEN (C2) 8 AND (C2) 9 | |
| EXTERIOR LAMPS SWITCH | OPTICAL HORN | CONTINUITY BETWEEN (C2) 3 AND (C2) 4 WITH SWITCH IN THE OFF POSITION |
| FOG LAMP | CONTINUITY BETWEEN (C2) 11 AND (C2) 12 | |
| PARK LAMPS | CONTINUITY BETWEEN (C2) 6 AND (C2) 7 | |
| HEADLAMPS LOW BEAM | (C2) 1 OR (C2) 2 AND (C2) 4 OR (C2) 5 - CONTINUITY ON LOW BEAM, OPEN ON HIGH BEAM | |
| HEADLAMPS HIGH BEAM | CONTINUITY BETWEEN (C2) 3 AND (C2) 4/(C2) 5 |