Pinpoint Tests Dg: Knock Sensor (KS): Introduction
WARNING:
To prevent the risk of high-voltage shock, always follow precisely all warnings and service instructions, including instructions to depower the system. The high-voltage system utilizes approximately 300 volts DC, provided through high-voltage cables to its components and modules. The high-voltage cables and wiring are identified by orange harness tape or orange wire covering. All high-voltage components are marked with high-voltage warning labels with a high-voltage symbol. Failure to follow these instructions may result in serious personal injury or death.
This pinpoint test is intended to diagnose the following:
- knock sensor 1 (KS1) (12A699)
- knock sensor 2 (KS2) (12A699)
- harness circuits: KS1+, KS1-, KS2+ and KS2-
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| KS1- (Knock Sensor 1 Negative) | 1 |
| KS1+ (Knock Sensor 1 Positive) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| KS2- (Knock Sensor 2 Negative) | 1 |
| KS2+ (Knock Sensor 2 Positive) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| KS1- (Knock Sensor 1 Negative) | T25 |
| KS1+ (Knock Sensor 1 Positive) | T17 |
| KS2- (Knock Sensor 2 Negative) | T28 |
| KS2+ (Knock Sensor 2 Positive) | T20 |