DTC P1604: Startability Malfunction [02/2014 - 11/2016]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
5. Read the DTCs.

   Refer to DTC CHECK / CLEAR [02/2014 - 11/2016]

   Powertrain > Engine and ECT > Trouble Codes 

   Result	Proceed to
   DTC P1604 is output	A
   DTC P1604 and other DTCs are output	B

   HINT: 

   If any DTCs other than P1604 are output, troubleshoot those DTCs first.

Result: 

B 

GO TO DTC CHART. 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [02/2014 - 08/2014] 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - 11/2015] 

Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016] 

Result: 

A 

See step  2

1. Turn the Techstream on.
2. Check the following freeze frame data to see the state of the auxiliary battery when the freeze frame data was recorded.
   CONFIRMATION ITEM
   
   

   Battery Voltage

3. Check the following freeze frame data to see if the engine was cranking when the freeze frame data was recorded.
   CONFIRMATION ITEM
   
   

   Engine Speed

   Engine Speed (Starter Off)

4. Check the following freeze frame data to check temperature data recorded when the engine did not start normally.
   CONFIRMATION ITEM
   
   

   Coolant Temp

   Intake Air

   Engine Oil Temperature

   Ambient Temp for A/C

5. Check the following freeze frame data to see the engine operating conditions recorded when the engine started.
   CONFIRMATION ITEM
   
   

   MAF

   Throttle Position

   ISC Flow

   ISC Position

   MAP

   EGR Step Position

6. Check the following freeze frame data to see before the engine did not start normally.
   CONFIRMATION ITEM
   
   

   Run Dist of Previous Trip

   Previous Trip Intake Temp

   Previous Trip Eng Oil Temp

   Previous Trip Ambient Temp

7. Use this information to perform a simulation test.
8. Compare the "Normal Condition" information in the Data List table (reference values) with the freeze frame data listed above and with the simulation test results to determine the problem cause.

   Result	Proceed to
   The problem cause can be determined	A
   The problem cause cannot be determined	B

Result: 

A 

REPAIR OR REPLACE MALFUNCTIONING PARTS 

Result: 

B 

CHECK FOR INTERMITTENT PROBLEMS. 

Refer to  CHECK FOR INTERMITTENT PROBLEMS [02/2014 - 11/2016]