Diagnostic Test

ACTIVE DTC
1. Ignition on, engine not running.
2. With a scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To step 2
  No
  - Perform the INTERMITTENT CONDITION Diagnostic Procedure. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(T750) STARTER RELAY OUTPUT CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Remove the Starter Relay.
3. Disconnect the Starter Solenoid harness connector.
4. Measure the resistance between ground and the (T750) Starter Relay Output circuit at the Starter Relay harness connector.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (T750) Starter Relay Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 3
(T750) STARTER RELAY OUTPUT CIRCUIT EXCESSIVE RESISTANCE
1. Measure the resistance of the (T750) Starter Relay Output circuit from the Starter Relay terminal to the Starter Solenoid harness connector.
  Is the resistance above 5.0 ohms?
  
  Yes
  - Repair the excessive resistance in the (T750) Starter Relay Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
(T40) STARTER RELAY OUTPUT CIRCUIT SHORTED TO GROUND
1. Disconnect the C10 TIPM harness connector.
2. Measure the resistance between ground and the (T40) Starter Relay Output circuit at the C10 TIPM harness connector.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (T40) Starter Relay Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 5
(T40) STARTER RELAY OUTPUT CIRCUIT EXCESSIVE RESISTANCE
1. Measure the resistance of the (T40) Starter Relay Output circuit from the Starter Relay terminal to the C10 TIPM harness connector.
  Is the resistance above 5.0 ohms?
  
  Yes
  - Repair the excessive resistance in the (T40) Starter Relay Feed circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 6
STARTER RELAY
1. Install a known good Relay.
2. Ignition on, engine not running.
3. Clear the TIPM DTCs.
4. Attempt to start the engine.
  Does the P127A reset?
  
  Yes
  - Go to step 7
  No
  - Replace the Starter Relay.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
TOTALLY INTEGRATED POWER MODULE
NOTE: Before continuing, check the TIPM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors.
2. Pay particular attention to all Power and Ground circuits.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace the Totally Integrated Power Module per Service Information.
  - Perform the BODY VERIFICATION TEST - VER 1. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .