C2116
C2116 - Anti Lock Brake System Pump Motor Supply LOW Voltage
For a complete wiring diagram, refer to.
• When Monitored: With the ignition ON and the ABS pump motor deactivated.
• Set Condition: When the anti lock brake module indicates the ABS Pump Motor supply voltage is less than 6.0 volts, the circuit fails the diagnostic test.
Test Step 1 - Test for A DTC C2116-ABS Pump Motor Supply LOW Voltage
• This DTC must be active for the results of this test to be valid.
• Turn the ignition ON.
• With the scan tool, read and record DTCs.
• With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
• With the scan tool, erase DTCs.
Ensure braking capability is available before road testing.
• Drive the vehicle over 25 m.p.h. (40 km/h).
• Park the vehicle and cycle the ignition switch from OFF to ON.
• With the scan tool, read and record DTCs
Does the scan tool display C2116 - ABS Pump Motor Supply LOW Voltage?
Yes
• Go to Test Step 2 => [ Test Step 2 - Test ABS Pump Operation With Scan Tool ]
No
• Perform the ABS Intermittent Condition Test. Refer to => Non-DTC Based Diagnostics. ABS Intermittent Condition Test
Test Step 2 - Test ABS Pump Operation With Scan Tool
• Cycle ignition switch OFF to ON.
• With the scan tool, actuate the ABS Pump Motor.
Did the ABS Pump Motor operate?
Yes
• Perform ABS Intermittent Condition Test. Refer to => Non-DTC Based Diagnostics. ABS Intermittent Condition Test
No
• Go to Test Step 3 => [ Test Step 3 - Test the ABS Pump Motor Fuse for an Open ]
Test Step 3 - Test the ABS Pump Motor Fuse for an Open
• Turn the ignition OFF.
• Remove and inspect the ABS Pump Motor fuse.
Is the ABS Pump Motor fuse open?
Yes
• Go to Test Step 4 => [ Test Step 4 - Test the Fused B(+) for a Short to Ground ]
No
• Go to Test Step 5 => [ Test Step 5 - Test the Wiring Harness, Terminals, and Connectors ]
Test Step 4 - Test the Fused B(+) for a Short to Ground
• Turn the ignition OFF.
• Test the fused B(+) circuit in the wiring harness for a short to ground.
Is the Fused B(+) circuit in the wiring harness OK?
Yes
• Go to Test Step 5 => [ Test Step 5 - Test the Wiring Harness, Terminals, and Connectors ]
No
• Repair the fused B(+) circuit as necessary. Replace the fuse.
• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test
Test Step 5 - Test the Wiring Harness, Terminals, and Connectors
• Test all related wiring for bruised, chafed, pierced, or partially broken wires. Test all related connectors for broken, bent, pushed out, or corroded terminals.
• Inspect the anti lock brake module harness connector and fused B(+) circuit in the wiring harness.
Were any problems found?
Yes
• Repair as necessary.
• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test
No
• Go to Test Step 6 => [ Test Step 6 - Fused B(+) Circuit Open ]
Test Step 6 - Fused B(+) Circuit Open
• Turn the ignition OFF.
• Disconnect the anti lock brake module harness connector.
• Using a 12 volt test lamp connected to ground, test the fused B(+) circuit in the anti lock brake module harness connector.
• The test lamp should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
Is the test lamp illuminated and bright?
Yes
• Go to Test Step 7 => [ Test Step 7 - Ground Circuits Open or High Resistance ]
No
• Repair the fused B(+) circuit for an open circuit or high resistance.
• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test
Test Step 7 - Ground Circuits Open or High Resistance
• Using a 12 volt test lamp connected to 12 volts, test the ground circuits.
• The test lamp should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
Is the test lamp illuminated and bright?
Yes
• Replace the anti lock brake module.
• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test
No
• Repair the ground circuits for an open circuit or high resistance.
• Perform ABS Verification Test. Refer to => Non-DTC
Based Diagnostics. ABS Verification Test