| Diagnosis and Testing Refer to Wiring Diagrams Section 501-09, for schematic and connector information. Inspection and Verification - Verify the customer concern.
- Visually inspect for obvious signs of mechanical and electrical damage.
Visual Inspection Chart | Mechanical | Electrical | | Exterior mirror(s) | Fuse(s) | | | Relay | | | Electrical connector(s) | | | Switch | - If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.
Symptom Chart Symptom Chart | Symptom | Possible Sources | Action | | The mirrors are inoperative | * Exterior mirror control switch. | * CARRY OUT the Exterior Mirror Control Switch Component Test. REFER to the Wiring Diagrams. | | * Circuit(s). | * GO to Pinpoint Test A. | | A single mirror is inoperative | * Exterior mirror control switch. | * CARRY OUT the Exterior Mirror Control Switch Component Test. REFER to the Wiring Diagrams. | | * Circuit(s). * Exterior mirror motor(s). | * GO to Pinpoint Test B. | | A single mirror does not function with switch logic | * Exterior mirror control switch. | * CARRY OUT the Exterior Mirror Control Switch Component Test. REFER to the Wiring Diagrams. | | * Circuit(s). * Exterior mirror motor(s). | * GO to Pinpoint Test C. | | The heated exterior mirror does not defrost | * Heated rear window control switch. | * CARRY OUT the Heated Rear Window Control Switch Component Test. REFER to the Wiring Diagrams. | | * Relay. * Circuit(s). * Heated mirror element(s). | * GO to Pinpoint Test D. | Pinpoint Test NOTE:Use a digital multimeter for all electrical measurements. | PINPOINT TEST A : THE MIRRORS ARE INOPERATIVE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | A1: CHECK THE VOLTAGE TO THE EXTERIOR MIRROR CONTROL SWITCH CIRCUIT 29-AD12 (OG/YE) | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the voltage between the exterior mirror control switch C149 pin 6, circuit 29-AD12 (OG/YE), harness side and ground. | | | Is the voltage greater than 10 volts? Yes No REPAIR circuit 29-AD12 (OG/YE). TEST the system for normal operation. | | A2: CHECK CIRCUIT 31-AD12 (BK) FOR CONTINUITY | | | 1 Measure the resistance between the exterior mirror control switch C149 pin 4, circuit 31-AD12 (BK), harness side and ground. | | | Is the resistance less than 5 ohms? Yes No REPAIR circuit 31-AD12 (BK). TEST the system for normal operation. | | A3: CHECK CIRCUIT 9-AD1 (BN/RD) FOR CONTINUITY | | | 1 Disconnect Driver Door A - pillar C1006 (LHD) or C1005 (RHD). | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) harness side, and the driver door A-pillar C1006 pin 3, circuit 9-AD17 (BN/GN) harness side.
- the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) harness side, and the driver door A-pillar C1005 pin 3, circuit 9-AD17 (BN/GN) harness side.
| | | Is the resistance less than 5 ohms? Yes VERIFY the customer concern. No REPAIR circuit 9-AD1 (BN/RD). TEST the system for normal operation. | | PINPOINT TEST B : A SINGLE MIRROR IS INOPERATIVE | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | B1: CHECK FOR CONTINUITY TO THE INOPERATIVE EXTERIOR MIRROR | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the resistance between: | | | Is the resistance less than 50 ohms? Yes VERIFY the customer concern. No Driver side INSTALL a new exterior mirror. Passenger side GO to B2. | | B2: CHECK CIRCUIT 9-AD17 (BN/GN) FOR CONTINUITY | | | 1 Disconnect Passenger Exterior Mirror C311. | | | 2 Measure the resistance between the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) harness side, and the passenger exterior mirror C311 pin 6, circuit 9-AD17 (BN/GN) harness side. | | | Is the resistance less than 5 ohms? Yes INSTALL a new exterior mirror. TEST the system for normal operation. No REPAIR circuit 9-AD17 (BN/GN). TEST the system for normal operation. | | PINPOINT TEST C : A SINGLE MIRROR DOES NOT FUNCTION WITH SWITCH LOGIC | NOTE:If the driver exterior mirror up/down function is inoperative GO to C1, if the driver exterior mirror left/right function is inoperative GO to C2, if the passenger exterior mirror up/down function is inoperative GO to C3, if the passenger exterior mirror left/right function is inoperative GO to C5. | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | C1: CHECK THE DRIVER EXTERIOR MIRROR UP/DOWN CIRCUIT | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 1, circuit 10-AD8 (GY/VT) harness side.
- the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 2, circuit 10-AD8 (GY/VT) harness side.
| | | Is the resistance less than 50 ohms? Yes VERIFY the customer concern. No INSTALL a new exterior mirror. TEST the system for normal operation. | | C2: CHECK THE DRIVER EXTERIOR MIRROR LEFT/RIGHT CIRCUIT | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 7, circuit 8-AD7 (WH/RD) harness side.
- the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 5, circuit 8-AD7 (WH/RD) harness side.
| | | Is the resistance less than 50 ohms? Yes VERIFY the customer concern. No INSTALL a new exterior mirror. TEST the system for normal operation. | | C3: CHECK THE PASSENGER EXTERIOR MIRROR UP/DOWN CIRCUIT | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 2, circuit 10-AD11 (GY/WH) harness side.
- the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 1, circuit 10-AD11 (GY/WH) harness side.
| | | Is the resistance less than 50 ohms? Yes VERIFY the customer concern. No | | C4: CHECK CIRCUIT 10-AD11 (GY/WH) FOR CONTINUITY | | | 1 Disconnect Passenger Exterior Mirror C311. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 2, circuit 10-AD11 (GY/WH) harness side, and the passenger exterior mirror C311 pin 2, circuit 10-AD11 (GY/WH) harness side.
- the exterior mirror control switch C149 pin 1, circuit 10-AD11 (GY/WH) harness side, and the passenger exterior mirror C311 pin 2, circuit 10-AD11 (GY/WH) harness side.
| | | Is the resistance less than 5 ohms? Yes INSTALL a new exterior mirror. TEST the system for normal operation. No REPAIR circuit 10-AD11 (GY/WH). TEST the system for normal operation. | | C5: CHECK THE PASSENGER EXTERIOR MIRROR LEFT/RIGHT CIRCUIT | | | 1 Disconnect Exterior Mirror Control Switch C149. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 5, circuit 8-AD10 (WH/BK) harness side.
- the exterior mirror control switch C149 pin 3, circuit 9-AD1 (BN/RD) and pin 7, circuit 8-AD10 (WH/BK) harness side.
| | | Is the resistance less than 50 ohms? Yes VERIFY the customer concern. No | | C6: CHECK CIRCUIT 8-AD10 (WH/BK) FOR CONTINUITY | | | 1 Disconnect Passenger Exterior Mirror C311. | | | 2 Measure the resistance between: - the exterior mirror control switch C149 pin 5, circuit 8-AD10 (WH/BK) harness side, and the passenger exterior mirror C311 pin 3, circuit 8-AD10 (WH/BK) harness side.
- the exterior mirror control switch C149 pin 7, circuit 8-AD10 (WH/BK) harness side, and the passenger exterior mirror C311 pin 3, circuit 8-AD10 (WH/BK) harness side.
| | | Is the resistance less than 5 ohms? Yes INSTALL a new exterior mirror. TEST the system for normal operation. No REPAIR circuit 8-AD10 (WH/BK). TEST the system for normal operation. | | PINPOINT TEST D : THE HEATED EXTERIOR MIRROR DOES NOT DEFROST | NOTE:If the driver heated exterior mirror does not defrost GO to D1, if the passenger heated exterior mirror does not defrost GO to D3 | | TEST CONDITIONS | DETAILS/RESULTS/ACTIONS | | D1: CHECK THE VOLTAGE TO THE DRIVER HEATED EXTERIOR MIRROR | | | 1 Disconnect Driver Heated Exterior Mirror C148a. | | | 2 Ignition switch in position II. | | | 3 Operate the heated rear window control switch. | | | 4 Measure the voltage between the driver heated exterior mirror C148a, circuit 14S-HB35 (VT/BK) harness side and ground. | | | Is the voltage greater than 10 volts? Yes No Repair circuit 14S-HB35 (VT/BK). TEST the system for normal operation. | | D2: CHECK THE DRIVER HEATED EXTERIOR MIRROR GROUND CIRCUIT FOR CONTINUITY | | | 1 Ignition switch in position 0. | | | 2 Disconnect Driver Heated Exterior Mirror C148b. | | | 3 Measure the resistance between the driver heated exterior mirror C148b, circuit 31-HB35 (BK) harness side and ground. | | | Is the resistance less than 5 ohms? Yes INSTALL a new heated exterior mirror glass. TEST the system for normal operation. No REPAIR circuit 31-HB35 (BK). TEST the system for normal operation. | | D3: CHECK THE VOLTAGE TO THE PASSENGER HEATED EXTERIOR MIRROR | | | 1 Disconnect Passenger Heated Exterior Mirror C147a. | | | 2 Ignition switch in position II. | | | 3 Operate the heated rear window control switch. | | | 4 Measure the voltage between the passenger heated exterior mirror C147a, circuit 14S-HB36 (VT/OG) harness side and ground. | | | Is the voltage greater than 10 volts? Yes No Repair circuit 14S-HB36 (VT/OG). TEST the system for normal operation. | | D4: CHECK THE PASSENGER HEATED EXTERIOR MIRROR GROUND CIRCUIT FOR CONTINUITY | | | 1 Ignition switch in position 0. | | | 2 Disconnect Passenger Heated Exterior Mirror C147b. | | | 3 Measure the resistance between the passenger heated exterior mirror C147b, circuit 31-HB36 (BK) harness side and ground. | | | Is the resistance less than 5 ohms? Yes INSTALL a new heated exterior mirror glass. TEST the system for normal operation. No REPAIR circuit 31-HB36 (BK). TEST the system for normal operation. | |
