Rear View Mirror System: Overview Mercury Sable V

Principles of Operation

Adjusting the exterior rear view mirror control switch to the LH or RH position determines which power mirror glass will be controlled.

Normal Operation

The exterior mirror control switch receives power through circuit SBP12 (GN/RD) and ground through circuit GD133 (BK). The exterior mirror control switch uses circuit CPM23 (GY) as the common circuit for both exterior mirror up/down and right/left movement.

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror control switch

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1. A1 CHECK FOR POWER TO THE EXTERIOR MIRROR CONTROL SWITCH - CIRCUIT SBP12 (GN/RD) Disconnect: Exterior Mirror Control Switch C527 Measure the voltage between exterior mirror control switch C527-3, circuit SBP12 (GN/RD) harness side and ground. Is the voltage greater than 10 volts? YES : Go to A2 . NO : VERIFY that smart junction box (SJB) fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
2. A2 CHECK CIRCUIT GD133 (BK) FOR AN OPEN Measure the resistance between exterior mirror control switch C527-1, circuit GD133 (BK) harness side and ground. Is the resistance less than 5 ohms? YES : Go to A3 . NO : REPAIR the circuit. TEST the system for normal operation.
3. A3 CHECK CIRCUIT CPM23 (GY) FOR A SHORT TO VOLTAGE Key in ON position. Measure the voltage between exterior mirror control switch C527-6, circuit CPM23 (GY) harness side and ground. Is any voltage present? YES : REPAIR the circuit. TEST the system for normal operation. NO : Go to A4 .
4. A4 CHECK CIRCUIT CPM23 (GY) FOR A SHORT TO GROUND Key in OFF position. Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY) harness side and ground. Is the resistance greater than 10,000 ohms? YES : Go to A5 . NO : REPAIR the circuit. TEST the system for normal operation.
5. A5 CHECK CIRCUIT CPM23 (GY) FOR AN OPEN Disconnect: LH Exterior Mirror C516 Measure the resistance between LH exterior mirror C516-2, circuit CPM23 (GY) harness side and exterior mirror control switch C527-6, circuit CPM23 (GY) harness side. Is the resistance less than 5 ohms? YES : INSTALL a new exterior mirror control switch. REFER to «Exterior Mirror Control Switch»(ref-293465-S06380477932008080700000) . TEST the system for normal operation. NO : REPAIR the circuit. TEST system for normal operation.

Under normal operation, the exterior mirror control switch uses circuit CPM23 (GY) as the common circuit for both exterior mirror up/down and right/left movement.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Exterior mirror control switch
3. Exterior mirror motor
4. Exterior mirror

Under normal operation, the exterior mirror control switch uses circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) or CPM23 (GY) to control the exterior mirror movement.

1. When power is received through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate left.
2. When ground is received through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate right.
3. When power is received through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate down.
4. When ground is received through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate up.

This pinpoint test is intended to diagnose the following

1. Wiring, terminals or connectors
2. Exterior mirror control switch
3. Exterior mirror motor
4. Exterior mirror

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1. C1 CHECK THE MIRROR MOVEMENT (LEFT/RIGHT) Operate the LH and RH exterior mirrors in the left and right direction. Do the exterior mirrors move left and right? YES : Go to C2 . NO : Go to C3 .
2. C2 CHECK THE MIRROR MOVEMENT (UP/DOWN) Operate the LH and RH exterior mirrors in the up and down direction. Do the exterior mirrors move up and down? YES : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation. NO : Go to C4 .
3. C3 CHECK THE VOLTAGE TO THE INOPERATIVE MIRROR Key in OFF position. Disconnect: Inoperative Exterior Mirror C516 or C625 NOTE: Position the exterior mirror control switch to the LH or RH mirror position. While operating the exterior mirror control switch in the right position, measure the voltage between ground and exterior mirror: (LH) C516-4, circuit CPM16 (BN/BU) harness side. (RH) C625-4, circuit CPM20 (BN/WH) harness side. Is the voltage greater than 10 volts? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . TEST the system for normal operation. NO : Go to C5 .
4. C4 CHECK THE VOLTAGE TO THE INOPERATIVE MIRROR Disconnect: Inoperative Exterior Mirror C516 or C625 NOTE: Position the exterior mirror control switch to the LH or RH mirror position. While operating the exterior mirror control switch in the up position, measure the voltage between ground and exterior mirror: (LH) C516-1, circuit CPM17 (BU/GN) harness side. (RH) C625-1, circuit CPM21 (YE/VT) harness side. Is the voltage greater than 10 volts? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . TEST the system for normal operation. NO : Go to C6 .
5. C5 CHECK CIRCUIT CPM16 (BN/BU) OR CIRCUIT CPM20 (BN/WH) FOR AN OPEN Disconnect: Exterior Mirror Control Switch C527 NOTE: LH mirror only. NOTE: RH mirror only. Measure the resistance between exterior mirror control switch C527-8, circuit CPM16 (BN/BU) harness side and LH exterior mirror C516-4, circuit CPM16 (BN/BU) harness side. Measure the resistance between exterior mirror control switch C527-7, circuit CPM20 (BN/WH) harness side and RH exterior mirror C625-4, circuit CPM20 (BN/WH) harness side. Is the resistance less than 5 ohms? YES : INSTALL a new exterior mirror control switch. REFER to «Exterior Mirror Control Switch»(ref-293465-S06380477932008080700000) . TEST the system for normal operation. NO : REPAIR the circuit. TEST the system for normal operation.
6. C6 CHECK CIRCUIT CPM17 (BU/GN) OR CIRCUIT CPM21 (YE/VT) FOR AN OPEN Disconnect: Exterior Mirror Control Switch C527 NOTE: LH mirror only. NOTE: RH mirror only. Measure the resistance between exterior mirror control switch C527-5, circuit CPM17 (BU/GN) harness side and LH exterior mirror C516-1, circuit CPM17 (BU/GN) harness side. Measure the resistance between exterior mirror control switch C527-2, circuit CPM21 (YE/VT) harness side and RH exterior mirror C625-1, circuit CPM21 (YE/VT) harness side. Is the resistance less than 5 ohms? YES : INSTALL a new exterior mirror control switch. REFER to «Exterior Mirror Control Switch»(ref-293465-S06380477932008080700000) . TEST the system for normal operation. NO : REPAIR the circuit. TEST the system for normal operation.

The interior auto-dimming mirror receives power from circuit CBP41 (BU), or if equipped with a microphone, circuit CBP31 (BU/OG), and ground from circuit GD133 (BK). When the vehicle is placed in REVERSE, voltage is sent to circuit CLS10 (GN/BN) and the interior auto-dimming mirror will turn the dimming feature off. There are 2 photoelectric sensors: one in the front of the interior rear view mirror and one mounted on the glass side of the mirror. If the sensors are blocked, the interior auto-dimming mirror might not work correctly. Always verify both sensors are not physically blocked before attempting to diagnose auto-dimming mirror concerns.

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Interior auto-dimming mirror

When the engine is running and the heated rear window switch is pressed, the HVAC electronic automatic temperature control (EATC) or the HVAC electronic manual temperature control (EMTC) grounds circuit CH122 (WH/OG) and the heated rear window relay closes. When the heated rear window relay is closed, power is supplied to circuit CRD06 (BN/YE) to battery junction box (BJB) fuse 49 (15A). The heated exterior mirrors receive power from circuit CBB49 (VT/GY), through BJB fuse 49 (15A). Ground is supplied to the LH heated exterior mirror through circuit GD133 (BK) and to the RH heated exterior mirror through circuit GD148 (BK/YE).

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror glass
4. Exterior mirror

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1. E1 CHECK THE OPERATION OF THE HEATED REAR WINDOW SYSTEM With the engine running, depress the heated rear window switch to the ON position. Place a hand on the heated rear window to verify that the heated rear window heats up. Does the heated rear window system operate? YES : Go to E2 . NO : REFER to «GLASS, FRAMES AND MECHANISMS»(ref-293466) article to diagnose the heated rear window system.
2. E2 CHECK THE OPERATION OF THE LH HEATED EXTERIOR MIRROR With the heated rear window switch in the ON position. Place a hand on the LH heated mirror to verify that the LH heated mirror heats up. Does the LH heated rear view mirror operate? YES : Go to E5 . NO : Go to E3 .
3. E3 CHECK CIRCUIT CBB49 (VT/GY) FOR VOLTAGE Key in OFF position. Disconnect: LH Exterior Mirror C516 With the engine running, depress the heated rear window switch to ON. Measure the voltage between LH exterior mirror C516-6, circuit CBB49 (VT/GY) harness side and ground. Is the voltage greater than 10 volts? YES : Go to E4 . NO : VERIFY that battery junction box (BJB) fuse 49 (15A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
4. E4 CHECK CIRCUIT GD133 (BK) FOR AN OPEN Key in OFF position. Measure the resistance between LH exterior mirror C516-7, circuit GD133 (BK) harness side and ground. Is the resistance less than 5 ohms? YES : CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror glass for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror glass. REFER to «Exterior Mirror Glass»(ref-293465-S25704306752008080700000) . TEST the system for normal operation. NO : REPAIR the circuit. TEST the system for normal operation.
5. E5 CHECK CIRCUIT CBB49 (VT/GY) FOR VOLTAGE Key in OFF position. Disconnect: RH Exterior Mirror C625 With the engine running, depress the heated rear window switch to ON. Measure the voltage between RH exterior mirror C625-6, circuit CBB49 (VT/GY) harness side and ground. Is the voltage greater than 10 volts? YES : Go to E6 . NO : REPAIR the circuit. TEST the system for normal operation.
6. E6 CHECK CIRCUIT GD148 (BK/YE) FOR AN OPEN Measure the resistance between RH exterior mirror C625-7, circuit GD148 (BK/YE) harness side and ground. Is the resistance less than 5 ohms? YES : CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror glass for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror glass. REFER to «Exterior Mirror Glass»(ref-293465-S25704306752008080700000) . TEST the system for normal operation. NO : REPAIR the circuit. TEST the system for normal operation.

The exterior mirror control switch sends input to the driver seat module (DSM) for the LH exterior mirror by switching power and ground to circuits CPM16 (BN/BU), CPM17 (BU/GN) and CPM23 (GY), and for the RH exterior mirror by switching power and ground to circuits CPM20 (BN/WH), CPM21 (YE/VT) and CPM23 (GY). The DSM will then supply the appropriate power and ground signals for the LH exterior mirror motor up/down circuits CPM26 (WH), CPM29 (GN) and left/right circuits CPM26 (WH), CPM28 (BU/BN), or the RH exterior mirror motor up/down circuits CPM31 (YE/GY), CPM34 (WH/BN) and left/right circuits CPM31 (YE/GY), CPM33 (WH/VT).

The DSM supplies the LH and RH exterior mirror feedback potentiometer reference voltage through circuit LPM30 (GY/VT) and ground through circuit RPM30 (YE). The DSM receives feedback from the LH exterior mirror feedback potentiometer through circuit (up/down) VPM35 (YE/BU) and circuit (left/right) VPM36 (BN/YE). The DSM receives feedback from the RH exterior mirror feedback potentiometer through circuit (up/down) VPM37 (BU/OG) and circuit (left/right) VPM38 (BN/GN).

This pinpoint test is intended to diagnose the following

1. Fuse
2. Wiring, terminals or connectors
3. Exterior mirror control switch
4. Exterior mirror
5. DSM

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1. F1 RETRIEVE THE DTCs FROM THE DRIVER SEAT MODULE (DSM) Use the recorded DSM DTCs from the continuous and on-demand self tests. Are any DTCs retrieved? YES : If DTC B1667 - If other DTCs are present diagnose them first. If no other DTCs are present, INSPECT the exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, go to F11 . If DTC B1668 - If other DTCs are present diagnose them first. If no other DTCs are present, INSPECT the exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, go to F12 . If DTC B1669 - If other DTCs are present diagnose them first. If no other DTCs are present, INSPECT the exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, go to F13 . If DTC B1670 - If other DTCs are present diagnose them first. If no other DTCs are present, INSPECT the exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, go to F14 . If DTC B1733, B1737, B1741 or B1745 - CARRY OUT the Exterior Mirror Control Switch Component Test. Refer to appropriate COMPONENT TESTING article. If the switch tests OK, go to F15 . If DTC B2223 Go to F16 . If DTC B2224 Go to F18 . If DTC B2312, B2316, B2320 or B2324, go to F20 . If DTC B2314, B2318, B2322 or B2326, go to F22 . NO : Go to F2 .
2. F2 CHECK OPERATION OF THE MIRRORS FROM THE EXTERIOR MIRROR CONTROL SWITCH Operate the mirrors using the exterior mirror control switch. Do the mirrors operate from the exterior mirror control switch? YES : Go to F8 . NO : Go to F3 .
3. F3 CHECK THE EXTERIOR MIRROR CONTROL SWITCH Key in OFF position. Disconnect: Exterior Mirror Control Switch C527 Carry out the Exterior Mirror Control Switch Component Test. Refer to appropriate COMPONENT TESTING article. Did the exterior mirror control switch pass the component test? YES : Go to F4 . NO : INSTALL a new exterior mirror control switch. REFER to «Exterior Mirror Control Switch»(ref-293465-S06380477932008080700000) . TEST the system for normal operation.
4. F4 CHECK FOR POWER TO THE EXTERIOR MIRROR CONTROL SWITCH - CIRCUIT SBP12 (GN/RD) Disconnect: Exterior Mirror Control Switch C527 Measure the voltage between exterior mirror control switch C527-3, circuit SBP12 (GN/RD) harness side and ground. Is the voltage greater than 10 volts? YES : Go to F5 . NO : VERIFY that smart junction box (SJB) fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.
5. F5 CHECK CIRCUIT GD133 (BK) FOR AN OPEN Measure the resistance between exterior mirror control switch C527-1, circuit GD133 (BK) harness side and ground. Is the resistance less than 5 ohms? YES : Go to F6 . NO : REPAIR the circuit. TEST the system for normal operation.
6. F6 CHECK CIRCUIT CPM23 (GY) FOR A SHORT TO GROUND Disconnect: DSM C341d Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY) harness side and ground. Is the resistance greater than 10,000 ohms? YES : Go to F7 . NO : REPAIR the circuit. TEST the system for normal operation.
7. F7 CHECK CIRCUIT CPM23 (GY) FOR AN OPEN Measure the resistance between DSM C341d-16, circuit CPM23 (GY) harness side and exterior mirror control switch C527-6, circuit CPM23 (GY) harness side. Is the resistance less than 5 ohms? YES : Go to F23 . NO : REPAIR the circuit. TEST system for normal operation.
8. F8 CHECK CIRCUIT RPM30 (YE) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: Exterior Mirror C516 and C625 Disconnect: DSM C341d Key in ON position. Measure the voltage between DSM C341d-11, circuit RPM30 (YE) harness side and ground. Is any voltage present? YES : REPAIR the circuit. TEST the system for normal operation. NO : Go to F9 .
9. F9 CHECK CIRCUIT LPM30 (GY/VT) FOR A SHORT TO GROUND Key in OFF position. Measure the resistance between DSM C341d-1, circuit LPM30 (GY/VT) harness side and ground. Is the resistance greater than 10,000 ohms? YES : Go to F10 . NO : REPAIR the circuit. TEST the system for normal operation.
10. F10 CHECK CIRCUIT RPM30 (YE) AND CIRCUIT LPM30 (GY/VT) FOR AN OPEN Measure the resistance between DSM: C341d-11, circuit RPM30 (YE) harness side and LH exterior mirror C516-12, circuit RPM30 (YE) harness side. C341d-11, circuit RPM30 (YE) harness side and RH exterior mirror C625-12, circuit RPM30 (YE) harness side. C341d-1, circuit LPM30 (GY/VT) harness side and LH exterior mirror C516-10, circuit LPM30 (GY/VT) harness side. C341d-1, circuit LPM30 (GY/VT) harness side and RH exterior mirror C625-10, circuit LPM30 (GY/VT) harness side. Are the resistances less than 5 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). TEST the system for normal operation.
11. F11 CHECK CIRCUIT CPM26 (WH) AND CIRCUIT CPM29 (GN) FOR AN OPEN Key in OFF position. Disconnect: LH Exterior Mirror C516 Disconnect: DSM C341d Measure the resistance between DSM: C341d-4, circuit CPM29 (GN) harness side and LH exterior mirror C516-1, circuit CPM29 (GN) harness side. C341d-2, circuit CPM26 (WH) harness side and LH exterior mirror C516-2, circuit CPM26 (WH) harness side. Are the resistances less than 5 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
12. F12 CHECK CIRCUIT CPM28 (BU/BN) FOR AN OPEN Key in OFF position. Disconnect: LH Exterior Mirror C516 Disconnect: DSM C341d Measure the resistance between DSM C341d-5, circuit CPM28 (BU/BN) harness side and LH exterior mirror C516-4, circuit CPM28 (BU/BN) harness side. Is the resistances less than 5 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
13. F13 CHECK CIRCUIT CPM31 (YE/GY) AND CIRCUIT CPM34 (WH/BN) FOR AN OPEN Key in OFF position. Disconnect: RH Exterior Mirror C625 Disconnect: DSM C341d Measure the resistance between DSM: C341d-7, circuit CPM34 (WH/BN) harness side and RH exterior mirror C625-1, circuit CPM34 (WH/BN) harness side. C341d-8, circuit CPM31 (YE/GY) harness side and RH exterior mirror C625-2, circuit CPM31 (YE/GY) harness side. Are the resistances less than 5 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
14. F14 CHECK CIRCUIT CPM33 (WH/VT) FOR AN OPEN Key in OFF position. Disconnect: RH Exterior Mirror C625 Disconnect: DSM C341d Measure the resistance between DSM C341d-6, circuit CPM33 (WH/VT) harness side and RH exterior mirror C625-4, circuit CPM33 (WH/VT) harness side. Is the resistance less than 5 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
15. F15 CHECK CIRCUITS CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) AND CPM23 (GY) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: Exterior Mirror Control Switch C527 Disconnect: DSM C341d Key in ON position. Measure the voltage between ground and exterior mirror control switch: C527-2, circuit CPM21 (YE/VT) harness side. C527-5, circuit CPM17 (BU/GN) harness side. C527-6, circuit CPM23 (GY) harness side. C527-7, circuit CPM20 (BN/WH) harness side. C527-8, circuit CPM16 (BN/BU) harness side. Is any voltage present? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : Go to F23 .
16. F16 CHECK CIRCUITS CPM26 (WH), CPM28 (BU/BN) AND CPM29 (GN) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: LH Exterior Mirror C516 Disconnect: DSM C341d Key in ON position. Measure the voltage between ground and DSM: C341d-2, circuit CPM26 (WH) harness side. C341d-4, circuit CPM29 (GN) harness side. C341d-5, circuit CPM28 (BU/BN) harness side. Is any voltage present? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : Go to F17 .
17. F17 CHECK CIRCUITS CPM26 (WH), CPM28 (BU/BN) AND CPM29 (GN) FOR A SHORT TO GROUND Key in OFF position. Measure the resistance between ground and DSM: C341d-2, circuit CPM26 (WH) harness side. C341d-4, circuit CPM29 (GN) harness side. C341d-5, circuit CPM28 (BU/BN) harness side. Are the resistances greater than 10,000 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
18. F18 CHECK CIRCUITS CPM31 (YE/GY), CPM33 (WH/VT) AND CPM34 (WH/BN) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: RH Exterior Mirror C625 Disconnect: DSM C341d Key in ON position. Measure the voltage between ground and DSM: C341d-6, circuit CPM33 (WH/VT) harness side. C341d-7, circuit CPM34 (WH/BN) harness side. C341d-8, circuit CPM31 (YE/GY) harness side. Is any voltage present? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : Go to F19 .
19. F19 CHECK CIRCUITS CPM31 (YE/GY), CPM33 (WH/VT) AND CPM34 (WH/BN) FOR A SHORT TO GROUND Key in OFF position. Measure the resistance between ground and DSM: C341d-6, circuit CPM33 (WH/VT) harness side. C341d-7, circuit CPM34 (WH/BN) harness side. C341d-8, circuit CPM31 (YE/GY) harness side. Are the resistances greater than 10,000 ohms? YES : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation. NO : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
20. F20 CHECK CIRCUITS VPM35 (YE/BU), VPM36 (BN/YE), VPM37 (BU/OG) AND VPM38 (BN/GN) FOR AN OPEN Key in OFF position. Disconnect: Exterior Mirror C516 or C625 Disconnect: DSM C341d Measure the resistance between DSM: (DTC B2312) C341d-15, circuit VPM37 (BU/OG) harness side and RH exterior mirror C625-11, circuit VPM37 (BU/OG) harness side. (DTC B2316) C341d-14, circuit VPM38 (BN/GN) harness side and RH exterior mirror C625-9, circuit VPM38 (BN/GN) harness side. (DTC B2320) C341d-12, circuit VPM36 (BN/YE) harness side and LH exterior mirror C516-9, circuit VPM36 (BN/YE) harness side. (DTC B2324) C341d-13, circuit VPM35 (YE/BU) harness side and LH exterior mirror C516-11, circuit VPM35 (YE/BU) harness side. Are the resistances less than 5 ohms? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : Go to F21 .
21. F21 CHECK CIRCUITS VPM35 (YE/BU), VPM36 (BN/YE), VPM37 (BU/OG) AND VPM38 (BN/GN) FOR A SHORT TO GROUND Measure the resistance between ground and DSM: (DTC B2312) C341d-15, circuit VPM37 (BU/OG) harness side. (DTC B2316) C341d-14, circuit VPM38 (BN/GN) harness side. (DTC B2320) C341d-13, circuit VPM35 (YE/BU) harness side. (DTC B2324) C341d-12, circuit VPM36 (BN/YE) harness side. Are the resistances greater than 10,000 ohms? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation.
22. F22 CHECK CIRCUITS VPM35 (YE/BU), VPM36 (BN/YE), VPM37 (BU/OG) AND VPM38 (BN/GN) FOR A SHORT TO VOLTAGE Key in OFF position. Disconnect: Exterior Mirror C516 or C625 Disconnect: DSM C341d Key in ON position. Measure the voltage between ground and DSM: (DTC B2314) C341d-15, circuit VPM37 (BU/OG) harness side. (DTC B2318) C341d-14, circuit VPM38 (BN/GN) harness side. (DTC B2322) C341d-13, circuit VPM35 (YE/BU) harness side. (DTC B2326) C341d-12, circuit VPM36 (BN/YE) harness side. Is any voltage present? YES : REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation. NO : CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to «Exterior Mirror»(ref-293465-S27039024432008080700000) . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to «Exterior Mirror Motor»(ref-293465-S04618099672008080700000) . CLEAR the DTCs. TEST the system for normal operation.
23. F23 CHECK THE DSM FOR CORRECT OPERATION Disconnect all DSM connectors. Check for: corrosion. pushed-out pins. Connect all DSM connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present? YES : INSTALL a new DSM. REFER to «MULTIFUNCTION ELECTRONIC MODULES»(ref-293473) article. CLEAR the DTCs. REPEAT the self-test. NO : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.