Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 21: When the TAC module detects a condition within the TAC system, more than 1 TAC system related DTC may set. This is due to the many redundant tests that run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Disconnecting components during testing may set additional DTCs. Keep this in mind when reviewing the Capture Info.
DTC P2135
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View References: Powertrain Control Module (PCM) Connector End Views , or Engine Controls Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check-Engine Controls? | Go to Step 2 | Go to Diagnostic System Check - Engine Controls |
| 2 | Is DTC P1518 also set? | Go to Diagnostic Trouble Code (DTC) List | Go to Step 3 |
| 3 |
|
Go to Step 5 | Go to Step 4 |
| 4 |
|
Go to Step 18 | Go to Step 5 |
| 5 |
|
Go to Step 20 | Go to Step 6 |
| 6 | Test for a short between the TP sensor 1 5-volt reference circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 7 |
| 7 | Test the TP sensor 1 signal circuit for resistance, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 8 |
| 8 | Test for a short between the TP sensor 1 signal circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 9 |
| 9 | Test the TP sensor 1 low reference circuit for resistance, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 10 |
| 10 | Test for a short between the TP sensor 1 low reference circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 11 |
| 11 | Test the TP sensor 2 5-volt reference circuit for resistance, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 12 |
| 12 | Test for a short between the TP sensor 2 5-volt reference circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 13 |
| 13 | Test the TP sensor 2 signal circuit for resistance, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 14 |
| 14 | Test for a short between the TP sensor 2 signal circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 15 |
| 15 | Test the TP sensor 2 low reference circuit for resistance, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 16 |
| 16 | Test for a short between the TP sensor 2 low reference circuit and all other TAC module circuits, with a DMM. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 17 |
| 17 | Inspect for poor connections at the harness connector of the TAC module. Refer to Testing for Intermittent Conditions and Poor Connections
and Repairing Connector Terminals
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 18 |
| 18 | Inspect for poor connections at the harness connector of the TP sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Repairing Connector Terminals
in Wiring Systems. Did you find and correct the condition? |
Go to Step 20 | Go to Step 19 |
| 19 |
IMPORTANT:
The TP sensor is not a serviceable part and should only be replaced with the throttle body assembly. Replace the throttle body assembly. Refer to Throttle Body Assembly Replacement
.Did you complete the replacement? |
Go to Step 20 | - |
| 20 |
|
Go to Step 21 | Go to Step 2 |
| 21 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
Go to Diagnostic Trouble Code (DTC) List | System OK |