Introduction
Component testing procedures are provided to determine whether a component is good or bad.
Testing information for each component includes a schematic, a view of the terminal locations and step-by-step test procedures. Terminal locations are identified by numbers or letters that may be on the component or next to it.
Scheme 1
The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column "Circuit to test". If you wish to test the complete component, perform all tests.
Connect the tester to the terminals shown in the second column and operate the component as shown in the third column.
Scheme 2
Scheme 3
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Starter relay circuit | 4 and 7 | Off | Open circuit |
| Acc | Open circuit | ||
| Run | Open circuit | ||
| Start | Closed circuit | ||
| Run/Start power circuit | 4 and 1 | Off | Open circuit |
| Acc | Open circuit | ||
| Run | Closed circuit | ||
| Start | Closed circuit | ||
| Run/Acc power circuit | 4 and 6 | Off | Open circuit |
| Acc | Closed circuit | ||
| Run | Closed circuit | ||
| Start | Open circuit | ||
| Key reminder circuit | 4 and 5 | Key in | Closed circuit |
| Key Out | Open circuit | ||
| Key removal inhibit circuit | 4 and 3 | 65-75 ohms |
IGNITION SWITCH (11572) COMPONENT TESTING
Scheme 4
Scheme 5
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Parking lights circuit | 7 and 5 | Autolamps | Open circuit |
| Off | |||
| Parking Lamps | Closed circuit | ||
| Headlamps | Open circuit | ||
| Headlamp circuit | 7 and 10 | Autolamps | Open circuit |
| Off | |||
| Parking Lamps | |||
| Headlamps | Closed circuit | ||
| Fog lamps Circuit | 7 and 6 | Fog lamps | Closed circuit |
| Off | Open circuit |
MAIN LIGHT SWITCH (11654) COMPONENT TESTING
Scheme 6
Scheme 7
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Interior lamps Circuit | 4 and 5 | Interior lamps | Closed circuit |
| Off | Open circuit | ||
| Illumination dimmer resistor | 4 and 1 | Rotate knob clockwise | Ohmmeter will show smoothly increasing resistance |
ILLUMINATION DIMMER SWITCH COMPONENT TESTING
Scheme 8
Scheme 9
| Circuit to test | Connect ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Washer switch circuit | 2 and 5 | Washer switch depressed | Closed circuit |
| Wiper switch circuit, high/low | 12 and 2 | Low | Closed circuit |
| 6 and 2 | |||
| 4 and 2 | Low | Open circuit | |
| 1 and 2 | |||
| 6 and 2 | High | Closed circuit | |
| 12 and 2 | |||
| 4 and 2 | |||
| 1 and 2 | High | Open circuit |
WIPER/WASHER SWITCH (17A553) COMPONENT TESTING
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Intermittent wiper circuit | 6 and 2 | Detent 1 | Closed circuit |
| 1 and 2 | Open circuit | ||
| 12 and 2 | Open circuit | ||
| 6 and 2 | Detent 2 | Closed circuit | |
| 1 and 2 | Closed circuit | ||
| 12 and 2 | Open circuit | ||
| 6 and 2 | Detent 3 | Open circuit | |
| 1 and 2 | Closed circuit | ||
| 12 and 2 | Open circuit | ||
| 6 and 2 | Detent 4 | Open circuit | |
| 1 and 2 | Closed circuit | ||
| 12 and 2 | Closed circuit | ||
| 6 and 2 | Detent 5 | Open circuit | |
| 1 and 2 | Open circuit | ||
| 12 and 2 | Closed circuit | ||
| 4 and 2 | Off | Open circuit | |
| 6 and 2 | |||
| 1 and 2 | |||
| 12 and 2 |
WIPER/WASHER SWITCH, INTERMITTENT WIPER PORTION (17A553) COMPONENT TESTING
Scheme 10
Scheme 11
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Turn signal | 6 and 10 | Left turn | Closed circuit |
| 7 and 10 | Right turn | Closed circuit | |
| Flash-to-pass | 8 and 10 | Pull and hold lever stalk toward steering wheel | Open circuit |
| 9 and 10 | Closed circuit | ||
| High beam / Low beam | 8 and 10 | Lever stalk in detent toward steering wheel | Closed circuit |
| 9 and 10 |
MULTIFUNCTION SWITCH (11K665) COMPONENT TESTING
Scheme 12
Scheme 13
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Power and Ground Checks Before Any Other Tests | 3 and 2, 3 and 8, 3 and 4, 3 and 10, 1 and 7 1 and 9 | All window switches, at rest | Open circuit |
| Left front window circuit | 3 and 8, 1 and 7 | Up | Closed circuit |
| 3 and 2, 1 and 7 | Down | Closed circuit | |
| Right front window circuit | 3 and 10, 1 and 9 | Up | Closed circuit |
| 3 and 4, 1 and 9 | Down | Closed circuit |
MASTER WINDOW ADJUST SWITCH COMPONENT TESTING
Scheme 14
Scheme 15
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Power and Ground Checks Before Any Other Tests | 1 and 2 5 and 4 5 and 3 | Window switch, at rest | Open circuit |
| Right front window circuit | 1 and 2 5 and 4 | Up | Closed circuit |
| 1 and 2 5 and 3 | Down | Closed circuit |
WINDOW ADJUST SWITCH, PASSENGER SIDE COMPONENT TESTING
Scheme 16
Scheme 17
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Power and Ground Checks Before Any Other Tests | 5 and 3 5 and 4 | Window switch, at rest | Open circuit |
| Rear window circuit | 5 and 3 | Up | Closed circuit |
| 5 and 4 | Down | Closed circuit |
FRONT PASSENGER WINDOW/DOOR LOCK SWITCH COMPONENT TESTING
Scheme 18
Scheme 19
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Forward/Rearward circuit | 4 and 6 | Forward | Closed circuit |
| Rearward | Open circuit | ||
| 4 and 3 | Forward | Open circuit | |
| Rearward | Closed circuit | ||
| 6 and 2 | Rest | Closed circuit | |
| 3 and 2 | |||
| Front up/down circuit | 4 and 1 | Up | Closed circuit |
| Down | Open circuit | ||
| 4 and 6 | Up | Open circuit | |
| Down | Closed circuit | ||
| 1 and 2 | Rest | Closed circuit | |
| 8 and 2 | |||
| Rear up/down circuit | 4 and 5 | Up | Closed circuit |
| Down | Open circuit | ||
| 4 and 7 | Up | Open circuit | |
| Down | Closed circuit | ||
| 5 and 2 | Rest | Closed circuit | |
| 7 and 2 |
SEAT ADJUST SWITCH, DRIVER SIDE FRONT (14A701) COMPONENT TESTING
Scheme 20
Scheme 21
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Lock Switch Circuit | 2 and 1 | Unlock | Closed circuit |
| Rest | Open circuit | ||
| Unlock Switch Circuit | 4 and 1 | Lock | Closed circuit |
| Rest | Open circuit |
DOOR LOCK SWITCH, DRIVER SIDE (14028) COMPONENT TESTING
Scheme 22
Scheme 23
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Lock Switch Circuit | 2 and 1 | Unlock | Closed circuit |
| Rest | Open circuit | ||
| Unlock Switch Circuit | 4 and 1 | Lock | Closed circuit |
| Rest | Open circuit |
DOOR LOCK SWITCH, PASSENGER SIDE (14028) COMPONENT TESTING
Scheme 24
Scheme 25
| Circuit to test | Connect self-powered test light or ohmmeter to terminals | Move switch to these positions | A good switch will indicate | |
|---|---|---|---|---|
| Left mirror | Up | 3 and 5 | Selector switch Left | Closed circuit |
| 6 and 1 | Adjuster Switch Up | |||
| Down | 3 and 6 | Selector switch Left | Closed circuit | |
| 5 and 1 | Adjuster Switch Down | |||
| Left | 3 and 2 | Selector switch Left | Closed circuit | |
| 6 and 1 | Adjuster Switch Left | |||
| Right | 3 and 6 | Selector switch Left | Closed circuit | |
| 2 and 1 | Adjuster Switch Right | |||
| Right mirror | Up | 3 and 8 | Selector switch Right | Closed circuit |
| 6 and 1 | Adjuster Switch Up | |||
| Down | 3 and 6 | Selector switch Right | Closed circuit | |
| 8 and 1 | Adjuster Switch Down | |||
| Left | 3 and 7 | Selector switch Right | Closed circuit | |
| 6 and 1 | Adjuster Switch Left | |||
| Right | 3 and 6 | Selector switch Right | Closed circuit | |
| 7 and 1 | Adjuster Switch Right | |||
EXTERIOR REAR VIEW MIRROR SWITCH (17B676) COMPONENT TESTING
Scheme 26
Scheme 27
| Circuit to test | Connect ohmmeter to terminals | A good relay will indicate |
|---|---|---|
| Coil | 85 and 86 | 46-90ohms |
| Contact | 30 and 87a | Closed circuit |
| 30 and 87 | Open circuit | |
| Coil - Contact | 86 and 30 | Open circuit |
| 86 and 87a | Open circuit | |
| 86 and 87 | Open circuit |
RELAY - MINI ISO COMPONENT TESTING (NO VOLTAGE APPLIED)
Disconnect the ohmmeter; connect pins 30 and 85 to 12V DC power and pin 86 to ground. Measure voltage between pin 87 and pin 86. If the voltage is 12V, continue with the test. If not, replace the relay. Disconnect power from pin 85 and measure voltage between pin 87a and pin 86. If the voltage is 12V, the relay is okay. If not, replace the relay.
Scheme 28
Scheme 29
| Circuit to test | Connect ohmmeter to terminals | A good relay will indicate |
|---|---|---|
| Coil | 85 and 86 | 63-102ohms |
| Contact | 30 and 87a | Closed circuit |
| 30 and 87 | Open circuit | |
| Coil - Contact | 85 and 30 | Open circuit |
| 85 and 87a | Open circuit | |
| 85 and 87 | Open circuit |
RELAY - MICRO ISO COMPONENT TESTING PROCEDURE (NO VOLTAGE APPLIED)
Disconnect the ohmmeter; connect pins 30 and 85 to 12V DC power and pin 86 to ground. Measure voltage between pin 87 and pin 86. If the voltage is 12V, continue with the test. If not, replace the relay. Disconnect power from pin 85 and measure voltage between pin 87a and pin 86. If the voltage is 12V, the relay is okay. If not, replace the relay.