Pinpoint Test I: The Memory Mirror is Inoperative
Rear View Mirrors - Exterior
Pinpoint Tests
Pinpoint Test I: The Memory Mirror is Inoperative
Refer to Wiring Diagram Set 124, Power Mirrors for schematic and connector information. Diagrams By Number
Normal Operation
Under normal operation, the exterior mirror control switch receives voltage from Smart Junction Box (SJB) fuse 12 (7.5A) through circuit SBP12 (GN/RD) and ground from circuit GD179 (BK/VT). The exterior mirror control switch sends input to the Driver Seat Module (DSM) for the LH exterior mirror by providing voltage and ground signals to circuits CPM16 (BN/BU), CPM17 (BU/GN) and CPM23 (GY), and for the RH exterior mirror by providing voltage and ground signals to circuits CPM20 (BN/WH), CPM21 (YE/VT) and CPM23 (GY). The DSM will then provide the appropriate voltage and ground signals for the LH exterior mirror motor up/down circuits CPM29 (GN), CPM03 (BU/WH) and left/right circuits CPM03 (BU/WH), CPM28 (BU/BN), or the RH exterior mirror motor up/down circuits CPM34 (WH/BN), CPM06 (GN/WH) and left/right circuits CPM06 (GN/WH), 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 (left/right) VPM35 (YE/BU) and circuit (up/down) VPM36 (BN/YE). The DSM receives feedback from the RH exterior mirror feedback potentiometer through circuit (left/right) VPM37 (BU/OG) and circuit (up/down) VPM38 (BN/GN).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Exterior mirror control switch
- Exterior mirror motor
- Exterior mirror
- DSM
PINPOINT TEST I: THE MEMORY MIRROR IS INOPERATIVE
NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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I1 RETRIEVE THE DTCs FROM THE DSM
- Use the recorded DSM DTCs from the continuous and on-demand self tests.
- Are any DTCs retrieved?
Yes
If DTC B1667 or B1668 - If other DTCs are present, DIAGNOSE them first. If no other DTCs are present, INSPECT the LH exterior mirror motor for foreign material, damage or a binding condition. If no condition is found, GO to I12.
If DTC B1669 or 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 I14.
If DTC B1733, B1737, B1741 or B1745 - CARRY OUT the Exterior Mirror Control Switch Component Test.
If the switch tests OK, GO to I16.
If DTC B2223 GO to I17.
If DTC B2224 GO to I19.
If DTC B2312, B2316, B2320 or B2324, GO to I21.
If DTC B2314, B2318, B2322 or B2326, GO to I23.
No
GO to I2.
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I2 CHECK OPERATION OF MIRRORS FROM EXTERIOR MIRROR CONTROL SWITCH
- Operate the mirrors using the exterior mirror control switch.
- Do the LH or RH mirrors operate momentarily using the exterior mirror control switch?
Yes
GO to I9.
No
GO to I3.
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I3 CHECK THE EXTERIOR MIRROR CONTROL SWITCH
- Ignition OFF.
- Disconnect: Exterior Mirror Control Switch C527 .
- Carry out the Exterior Mirror Control Switch component test.
- Did the exterior mirror control switch pass the component test?
Yes
GO to I4.
No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch Service and Repair. TEST the system for normal operation.
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I4 CHECK FOR VOLTAGE TO THE EXTERIOR MIRROR CONTROL SWITCH - CIRCUIT SBP12 (GN/RD)
- Ignition ON.
- Measure the voltage between exterior mirror control switch C527-1, circuit SBP12 (GN/RD), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to I5.
No
VERIFY that Smart Junction Box (SJB) fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short. TEST the system for normal operation. Diagrams By Number
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I5 CHECK CIRCUIT GD179 (BK/VT) FOR AN OPEN
- Ignition OFF.
- Measure the resistance between exterior mirror control switch C527-3, circuit GD179 (BK/VT), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to I6.
No
REPAIR the circuit. TEST the system for normal operation.
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I6 CHECK CIRCUIT CPM23 (GY) FOR A SHORT TO VOLTAGE
- Disconnect: DSM C341D.
- 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 I7.
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I7 CHECK CIRCUIT CPM23 (GY) FOR A SHORT TO GROUND
- 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 I8.
No
REPAIR the circuit. TEST the system for normal operation.
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I8 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 I24.
No
REPAIR the circuit. TEST system for normal operation.
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I9 CHECK CIRCUIT RPM30 (YE) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Exterior Mirror C521 and C601.
- Disconnect: DSM C341D.
- Ignition ON.
- 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 I10.
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I10 CHECK CIRCUIT LPM30 (GY/VT) FOR SHORT TO GROUND
- Ignition OFF.
- 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 I11.
No
REPAIR the circuit. TEST the system for normal operation.
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I11 CHECK CIRCUITS RPM30 (YE) AND LPM30 (GY/VT) FOR AN OPEN
- Measure the resistance between DSM C341D, harness side and exterior mirror C521 (LH)/ 601 (RH), harness side using the following chart:
- 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 motors 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 LH or RH exterior mirror. REFER to Exterior Mirror Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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I12 CHECK THE LH EXTERIOR MIRROR FOR VOLTAGE FROM THE DSM
- Ignition OFF.
- Disconnect: LH Exterior Mirror C521.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DSM DataLogger.
- DTC B1667: Measure the voltage between ground and LH exterior mirror:
- C521-4, circuit CPM29 (GN), harness side while toggling the LH exterior mirror DSM PID DR_UP to On.
- C521-9, circuit CPM03 (BU/WH), harness side while toggling the LH exterior mirror DSM PID DR_DOWN to On.
- DTC B1668: Measure the voltage between ground and LH exterior mirror:
- C521-11, circuit CPM03 (BU/WH), harness side while toggling the LH exterior mirror DSM PID DR_LEFT to On.
- C521-10, circuit CPM28 (BU/BN), harness side while toggling the LH exterior mirror DSM PID DR_RIGHT to On.
- Do the voltages momentarily change from 0 volt to greater than 10 volts when the active command is toggled On?
Yes
CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors 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 LH exterior mirror. REFER to Exterior Mirror Exterior Mirror. If the jumper harness is OK, INSTALL a new LH exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. REPEAT the self-test.
No
GO to I13.
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I13 CHECK CIRCUITS CPM03 (BU/WH), CPM28 (BU/BN) AND CPM29 (GN) FOR AN OPEN
- Ignition OFF.
- Disconnect: DSM C341D.
- Measure the resistance between LH Exterior Mirror C521, harness side and DSM C341D, harness side using the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to I24.
No
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
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I14 CHECK THE RH EXTERIOR MIRROR FOR VOLTAGE FROM THE DSM
- Ignition OFF.
- Disconnect: RH Exterior Mirror C601.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DSM DataLogger.
- DTC B1669: Measure the voltage between ground and RH exterior mirror:
- C601-4, circuit CPM34 (WH/BN), harness side while toggling the RH exterior mirror DSM PID PR_UP to On.
- C601-9, circuit CPM06 (GN/WH), harness side while toggling the RH exterior mirror DSM PID PR_DOWN to On.
- DTC B1670: Measure the voltage between ground and RH exterior mirror:
- C601-11, circuit CPM06 (GN/WH), harness side while toggling the RH exterior mirror DSM PID PR_LEFT to On.
- C601-10, circuit CPM33 (WH/VT), harness side while toggling the RH exterior mirror DSM PID PR_RIGHT to On.
- Do the voltages momentarily change from 0 volt to greater than 10 volts when the active command is toggled On?
Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors 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 RH exterior mirror. REFER to Exterior Mirror Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
No
GO to I15.
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I15 CHECK CIRCUITS CPM06 (GN/WH), CPM33 (WH/VT) AND CPM34 (WH/BN) FOR AN OPEN
- Ignition OFF.
- Disconnect: DSM C341D.
- Measure the resistance between RH exterior mirror C601, harness side and DSM C341D, harness side using the following chart:
- Are the resistances less than 5 ohms?
Yes
GO to I24.
No
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
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I16 CHECK CIRCUITS CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH) AND CPM21 (YE/VT) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: Exterior Mirror Control Switch C527.
- Disconnect: DSM C341D.
- Ignition ON.
- 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.
- C527-7, 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 I24.
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I17 CHECK CIRCUITS CPM03 (BU/WH), CPM28 (BU/BN) AND CPM29 (GN) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: LH Exterior Mirror C521.
- Disconnect: DSM C341D.
- Ignition ON.
- Measure the voltage between ground and DSM:
- C341D-2, circuit CPM03 (BU/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 I18.
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I18 CHECK CIRCUITS CPM03 (BU/WH), CPM28 (BU/BN) AND CPM29 (GN) FOR A SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between ground and DSM:
- C341D-2, circuit CPM03 (BU/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 exterior mirror jumper harness between the vehicle harness and the exterior mirror motors 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 Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
No
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
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I19 CHECK CIRCUITS CPM06 (GN/WH), CPM33 (WH/VT) AND CPM34 (WH/BN) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: RH Exterior Mirror C601.
- Disconnect: DSM C341D.
- Ignition ON.
- 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 CPM06 (GN/WH), harness side.
- Is any voltage present?
Yes
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
No
GO to I20.
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I20 CHECK CIRCUITS CPM06 (GN/WH), CPM33 (WH/VT) AND CPM34 (WH/BN) FOR A SHORT TO GROUND
- Ignition OFF.
- 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 CPM06 (GN/WH), harness side.
- Are the resistances greater than 10,000 ohms?
Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors 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 Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
No
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
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I21 CHECK CIRCUITS VPM35 (YE/BU), VPM36 (BN/YE), VPM37 (BU/OG) AND VPM38 (BN/GN) FOR AN OPEN
- Ignition OFF.
- Disconnect: DTC B2320 or B2324: Exterior Mirror C521.
- Disconnect: DTC B2312 or B2316: Exterior Mirror C601.
- Measure the resistance between DSM C341D, harness side and exterior mirror C521 (LH)/ C601 (RH), harness side using the following chart:
- Are the resistances less than 5 ohms?
Yes
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
No
GO to I22.
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I22 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
CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motors 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 Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
No
REPAIR the circuit(s). CLEAR the DTCs. TEST the system for normal operation.
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I23 CHECK CIRCUITS VPM35 (YE/BU), VPM36 (BN/YE), VPM37 (BU/OG) AND VPM38 (BN/GN) FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: DTC B2322 or B2326: Exterior Mirror C521.
- Disconnect: DTC B2314 or B2318: Exterior Mirror C601.
- Disconnect: DSM C341D.
- Ignition ON.
- 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 motors for 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 LH or RH exterior mirror. REFER to Exterior Mirror Exterior Mirror. If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor Service and Repair. CLEAR the DTCs. TEST the system for normal operation.
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I24 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 Information Bus. 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.
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