Mirror System: Diagnosis Chevrolet Sonic I

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(ref-542498-S16706522532013041600000) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Heated Mirrors Malfunction»(ref-542505-S06524748382013041600000)
2. «Power Mirror Malfunction»(ref-542505-S14462069252013041600000)

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Testing

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate A9 Outside Rearview Mirror. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal G and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Engine Running, connect a test lamp between the control circuit terminal F and the ground circuit terminal G.
4. Verify the test lamp turns ON and OFF when commanding the Rear Defogger On and Off with a scan tool. If the test lamp is always OFF Ignition OFF, remove the test lamp, disconnect the harness connector at the X50A Fuse Block-Underhood. Test for infinite resistance between the control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the A9 Outside Rearview Mirror. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the X50A Fuse Block-Underhood, ignition ON. Test for less than 1 V between the control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the X50A Fuse Block-Underhood If the test lamp turns ON and OFF
5. Test or replace the A9 Outside Rearview Mirror.

1. Perform the «Diagnostic System Check - Vehicle»(ref-542476-S03610919532013041600000) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(ref-542476-S11988299792013041600000) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(ref-542476-S27446858652013041600000) provides an overview of each diagnostic category.

Both Outside Rearview Mirrors Inoperative

1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 5 and ground. If 10 ohms or greater Ignition OFF. Test for less than 2 ohms in the ground circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, repair the open/high resistance in the ground connection. If less than 10 ohms
3. Verify a test lamp illuminates between the B+ circuit terminal 4 and ground. If the test lamp does not illuminate and the circuit fuse is good Ignition OFF. Test for less than 2 ohms in the B+ circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse. If the test lamp does not illuminate and the circuit fuse is open Ignition OFF. Test for infinite resistance between the B+ circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for infinite resistance between each of the control circuit terminals listed below and ground: Control circuit terminal 1 Control circuit terminal 2 Control circuit terminal 3 Control circuit terminal 7 Control circuit terminal 8 Control circuit terminal 9 If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance, replace the appropriate M77 Outside Rearview Mirror Motor. If the test lamp illuminates
4. Test or replace the S52 Outside Rearview Mirror Switch.

Driver Outside Mirror Movement Malfunction

1. Ignition OFF, disconnect the X501 inline harness connector at the A9A Outside Rearview Mirror-Driver. Ignition ON
2. Connect a test lamp between the control circuit terminal A and control circuit terminal B.
3. Verify the test lamp turns ON when commanding the UP and DOWN states with the S52 Outside Rearview Mirror Switch. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, test or replace the S52 Outside Rearview Mirror Switch. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch If the test lamp turns ON during each of the commands
4. Connect a test lamp between the control circuit terminal A and control circuit terminal C.
5. Verify the test lamp turns ON when commanding the LEFT and RIGHT states with the S52 Outside Rearview Mirror Switch. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, test or replace the S52 Outside Rearview Mirror Switch. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch If the test lamp turns ON during each of the commands
6. Test or replace the M77D Outside Rearview Mirror Motor-Driver.

Passenger Outside Mirror Movement Malfunction

1. Ignition OFF, disconnect the X601 inline harness connector at the A9B Outside Rearview Mirror-Passenger. Ignition ON
2. Connect a test lamp between the control circuit terminal A and control circuit terminal B.
3. Verify the test lamp turns ON when commanding the UP and DOWN states with the S52 Outside Rearview Mirror Switch. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, test or replace the S52 Outside Rearview Mirror Switch. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch If the test lamp turns ON during each of the commands
4. Connect a test lamp between the control circuit terminal A and control circuit terminal C.
5. Verify the test lamp turns ON when commanding the LEFT and RIGHT states with the S52 Outside Rearview Mirror Switch. If the test lamp remains OFF during either of the commands Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch. Test for infinite resistance between each control circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in each control circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, test or replace the S52 Outside Rearview Mirror Switch. If the test lamp is always ON Ignition OFF, remove the test lamp, disconnect the harness connector at the S52 Outside Rearview Mirror Switch, ignition ON. Test for less than 1 V between each control circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, test or replace the S52 Outside Rearview Mirror Switch If the test lamp turns ON during each of the commands
6. Test or replace the M77P Outside Rearview Mirror Motor-Passenger.