TROUBLESHOOTING FLASH CODE 42
Check for Timing Reference Sensor Code
Perform the following steps to check for TRS code.
1. Check for TRS code.
[a] If code 21/0 is not logged, refer to section 42.3.7.
[b] If code 21/0 is logged, refer to section 42.3.8.
Check ECM Connectors
Perform the following steps to check the ECM connectors.
1. Check terminals at the ECM engine harness connectors (both the ECM and harness side)
for damage: bent, corroded, and unseated pins or sockets. See Figure 42-5.
[a] If terminals and connectors are damaged, repair them. Refer to section 42.3.16.
[b] If terminals and connectors are not damaged, refer to section 42.3.15.
Engine Harness Connector to Synchronous Sensor
Timing Reference Sensor Resistance Check
Perform the following steps to check TRS resistance.
1. Remove the engine harness connector.
2. Measure resistance between sockets T1 and T2 on the engine harness connector.
See Figure 42-6.
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION