ELECTROCHROMATIC REAR VIEW & SIDE MIRRORS
Check P-IG fuse, electrochromatic mirror and wiring harness.
MIRROR DEFOGGER
Note. See REAR WINDOW & SIDE MIRROR DEFOGGERS article.
Note. Prior to trouble shooting, ensure no problems exist in multiplex communications. If problems exist, repair multiplex control system before trouble shooting. See MULTIPLEX CONTROL SYSTEMS - LS430 article.
DRIVING POSITION MEMORY & RETURN SWITCH CIRCUIT
Disconnect driver's door ECU harness connector. Disconnect driving position memory and return switch harness connector. Check for continuity between specified position memory and return switch terminals. See WIRING DIAGRAMS . See DRIVING POSITION MEMORY & RETURN SWITCH CIRCUIT CONTINUITY table. If continuity is as specified, check driving position memory and return switch. See DRIVING POSITION MEMORY & RETURN SWITCH under COMPONENT TESTS. If continuity is not as specified, repair open circuit(s).
| Switch Terminal No. | Wire Color | Driver Door ECU Terminal No. |
|---|---|---|
| 2 | GRY | 29 |
| 3 | PNK | 21 |
| 4 | PNK/BLK | 20 |
| 5 | PNK/BLU | 9 |
| 6 | BRN/WHT | 28 |
DRIVING POSITION MEMORY & RETURN SWITCH CIRCUIT CONTINUITY
POWER MIRROR MOTOR
Note. For power mirror motor circuit testing, see POWER MIRROR MOTOR under COMPONENT TESTS.
POWER MIRROR SWITCH CIRCUIT
Disconnect driver's side junction block ECU harness connector. Disconnect mirror switch harness connector. Check for continuity between specified harness connector terminals. See MIRROR SWITCH CIRCUIT CONTINUITY table. If continuity is as specified, check mirror switch. See POWER MIRROR SWITCH under COMPONENT TESTS. If continuity is not as specified, repair open circuit(s).
| Harness Connector/Terminal No. | Wire Color | Driver Side JB ECU Terminal No. |
|---|---|---|
| B/2 | GRN/ORG | 8 |
| B/6 | PNK | 19 |
| B/7 | GRY | 9 |
| A/7 | BRN/RD | 11 |
| A/8 | RD/GRN | 10 |
| A/9 | LT.GRN | 7 |
MIRROR SWITCH CIRCUIT CONTINUITY
DRIVING POSITION MEMORY & RETURN SWITCH
Remove driving position memory and return switch. Check for continuity between specified driving position memory and return switch terminals (component side) with switch in specified position. See DRIVING POSITION MEMORY & RETURN SWITCH CONTINUITY table. (Scheme 3) If continuity is not as specified, replace driving position memory and return switch.
| Terminals No. | Switch Position | Continuity |
|---|---|---|
| 2 & 6 | Memory | Yes |
| 3 & 6 | Position No. 1 On | Yes |
| 4 & 6 | Position No. 2 On | Yes |
| 5 & 6 | Position No. 3 On | Yes |
DRIVING POSITION MEMORY & RETURN SWITCH CONTINUITY
Scheme 3
Disconnect power mirror motor harness connector. Apply battery voltage and ground between specified terminals of power mirror motor harness connector (reverse polarity to move/operate motor in opposite direction). See POWER MIRROR MOTOR TEST table. If motor does not operate as specified, replace power mirror motor.
| Mirror Direction | Terminals No. |
|---|---|
| Left/Right | 9 & 11 |
| Up/Down | 1 & 10 |
POWER MIRROR MOTOR TEST
POWER MIRROR RETRACT MOTOR
Disconnect power mirror motor harness connector. Apply battery voltage and ground between specified terminals of power mirror motor harness connector (reverse polarity to move/operate motor in opposite direction). See POWER MIRROR RETRACT MOTOR TEST table.
| Mirror Direction | Terminals No. |
|---|---|
| Retract/Driving | 3 & 11 |
POWER MIRROR RETRACT MOTOR TEST
POWER MIRROR POSITION SENSOR
- Disconnect power mirror motor harness connector. Connect three 1.5-volt dry cell batteries together in series. (Scheme 4) Connect dry cell battery positive lead to terminal No. 5 and negative lead to terminal No. 14. Connect positive lead of voltmeter to terminal No. 6 and negative lead to terminal No. 14.
- While watching voltmeter, apply battery voltage and ground to terminals No. 1 and 10, reversing polarity as necessary to move mirror in both directions. As mirror moves, voltage should gradually and smoothly change from 0-1.0 volt to 2.8-5.0 volts. If voltage is not as specified, replace power mirror motor assembly. If voltage is as specified, go to next step.
- Disconnect 4 leads of voltmeter and battery voltage from power mirror motor connector terminals (leave dry cell assembly connected). Connect positive lead of voltmeter to terminal No. 13 and negative lead to terminal No. 14.
- Apply battery voltage and ground between terminals No. 9 and 10, reversing polarity as necessary to move mirror in both directions. As mirror moves, voltage should gradually and smoothly change from 0-1.0 volt to 2.8-5.0 volts. If voltage is not as specified, replace power mirror motor assembly.
Scheme 4
POWER MIRROR SWITCH
Remove power mirror switch. Check resistance or continuity between specified power mirror switch terminals (component side) with switch in specified position. See POWER MIRROR SWITCH RESISTANCE table. (Scheme 5) If resistance or continuity is not as specified, replace power mirror switch.
| Switch Position | Terminals No. | Resistance (Ohms) | |
|---|---|---|---|
| Left & Right Select Switch | |||
| Left | 8 & 9 | 100 | |
| Right | 8 & 9 | 0 | |
| Left & Right Switch | |||
| Up | 7 & 9 | About 100 | |
| Right | 7 & 9 | 250 | |
| Down | 7 & 9 | 470 | |
| Left | 7 & 9 | 800 | |
POWER MIRROR SWITCH RESISTANCE
Scheme 5
POWER MIRROR RETRACT SWITCH
Remove power retract mirror switch. Check continuity between specified power retract mirror switch terminals (component side) with switch in specified position. See POWER MIRROR RETRACT SWITCH CONTINUITY table. (Scheme 6) If continuity is not as specified, replace power mirror retract switch.
| Switch Position | Terminals No. |
|---|---|
| Retract | 1 & 2 |
| Extend | (1) |
| (1) Information is not available from manufacturer. | |
| (1) | Information is not available from manufacturer. |
POWER MIRROR RETRACT SWITCH CONTINUITY
Scheme 6
ELECTROCHROMATIC OUTER MIRROR
Disconnect outer mirror connector. Using jumper wires, connect 1.5 volt dry cell battery positive lead and battery negative lead to specified terminals at mirror connector. See ELECTROCHROMATIC OUTER MIRROR TEST table. Mirror face should change from bright to dark. Replace mirror assembly as necessary.
| Application | (1) Battery Positive To Terminal No. | (1) Battery Negative To Terminal No. | |
|---|---|---|---|
| With Memory | 4 | 3 | |
| Without Memory | 2 | 1 | |
| (1) 1.5 volt dry cell battery. | |||
| (1) | 1.5 volt dry cell battery. |
ELECTROCHROMATIC OUTER MIRROR TEST
ELECTROCHROMATIC REAR VIEW MIRROR
Remove inside rear view mirror. Using jumper wires, apply positive battery lead to terminal No. 1 and negative battery lead to terminal No. 4 at rear view mirror connector. (Scheme 7) Connect positive lead of voltmeter to terminal No. 2 and negative lead to terminal No. 3. Press mirror switch. Observe voltmeter and shine an electric light on face of mirror. Battery voltage should be present and face should change from bright to dark. Replace rear view mirror as necessary.
Scheme 7
POWER MIRROR GLASS
| WARNING | To prevent fire, ensure mirror defogger switch is turned off and element has cooled before sliding shop towel behind mirror. |